Mark Levinson Stereo Amplifier 500H User Manual

Owners Manual  
No500H Series  
Power Amplifier  
 
Important Safety Instructions  
1. Read these instructions.  
2. Keep these instructions.  
3. Heed all warnings.  
4. Follow all instructions.  
5. Do not use this apparatus near water.  
6. Clean only with a dry cloth.  
7. Do not block any ventilation openings. Install in accordance with the manufacturer’s  
instructions.  
8. Do not install near any heat sources such as radiators, heat registers, stoves or other apparatus  
that produce heat.  
9. Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has  
two blades with one wider than the other. A grounding-type plug has two blades and a third  
grounding prong. The wide blade or third prong is provided for your safety. If the provided plug  
does not fit into your outlet, consult an electrician for replacement of the obsolete outlet.  
10. Protect the power cord from being walked on or pinched, particularly at plugs, convenience  
receptacles and the point where it exits from the apparatus.  
11. Only use attachments and accessories specified by the manufacturer.  
12. Use only with the cart, stand, tripod, bracket or table specified by the manufacturer  
or sold with the apparatus. When a cart is used, use caution when moving the cart/  
apparatus combination to avoid injury or tip over.  
iii  
13. Unplug this apparatus during lightning storms or when unused for long periods of time.  
14. Refer all servicing to qualified service personnel. Servicing is required when the apparatus has  
been damaged in any way, such as when the power-supply cord or plug is damaged; liquid has  
been spilled or objects have fallen into the apparatus; or the apparatus has been exposed to rain  
or moisture, does not operate normally or has been dropped.  
15. The MAIN'S cord is intended to be the safety disconnect device for this apparatus and shall  
remain readily operable at all times.  
16. Ventilation should not be impeded by covering the ventilation openings with items such as  
newspapers, tablecloths, curtains and so on.  
17. No naked flame sources, such as candles, should be placed on the apparatus.  
18. Terminals marked with this symbol may be considered HAZARDOUS LIVE, and  
the external wiring connected to these terminals requires installation by an  
INSTRUCTED PERSON or the use of ready-made leads or cords.  
19. This product must be terminated with a three-conductor AC mains power cord that includes an  
earth ground connection. To prevent shock hazard, all three connections must ALWAYS be used.  
Warning!  
To reduce the risk of fire or electric shock, do not expose this apparatus to rain or moisture. The  
apparatus shall not be exposed to dripping or splashing. No objects filled with liquids, such as  
vases, shall be placed on the apparatus.  
 
Mark Levinson  
Safety Terms & Symbols  
These terms may appear in this manual:  
Calls attention to a procedure, practice, condition or the like  
that, if not correctly performed or adhered to, could result in  
personal injury or death.  
Warning!  
Caution!  
Note  
Calls attention to a procedure, practice, condition or the like  
that, if not correctly performed or adhered to, could result in  
damage or destruction to part or all of the component.  
Calls attention to information that is essential to highlight.  
These symbols may appear on the product:  
Appears on the component to indicate the presence of  
noninsulated, dangerous voltage inside the enclosure – voltage that  
may be sufficient to constitute a risk of shock.  
iv  
Appears on the component to indicate important operation and  
maintenance instructions included in the accompanying  
documentation.  
Appears on the component to indicate compliance with the EMC  
(Electromagnetic Compatibility) and LVD (Low-Voltage Directive)  
standards of the European community.  
Documentation Conventions  
This document contains general safety and operation instructions  
for the Nº500H Series Power Amplifiers. It is important to read  
this document before attempting to use this product. Please pay  
particular attention to safety instructions.  
This manual is not intended as a general reference guide for audio or  
home theater systems. If you’re uncertain how to set up or maintain your  
system, seek the advice of a professional installer or ask your dealer for a  
recommendation.  
 
Nº500H Series Power Amplifier  
Table of Contents  
Introduction.............................................................................. 2  
Product Description.....................................................................2  
Whats in the Box ........................................................................2  
Product Registration....................................................................3  
Installation Considerations........................................................ 3  
Unpacking..................................................................................3  
Placement and Ventilation...........................................................3  
Power Requirements ................................................................. 4  
Operating States.........................................................................5  
Front Panel............................................................................... 6  
Rear Panel ................................................................................ 7  
Network Setup........................................................................ 10  
Material Requirements...............................................................10  
Computer Requirements ...........................................................11  
Connecting the Cables..............................................................11  
Internal Web Page ....................................................................12  
Network Setup Parameters........................................................12  
Connecting With DHCP (Recommended)...................................13  
Setting Up the Computer ..........................................................14  
Connecting With Static IP Addressing ........................................15  
Direct Connection.....................................................................17  
ML Net ................................................................................... 18  
Masters and Slaves....................................................................18  
Connecting the Devices ............................................................18  
Discovering Slaves.....................................................................19  
Status Reporting .......................................................................19  
Fault Reporting.........................................................................19  
1
Troubleshooting...................................................................... 20  
Fault Protection ...................................................................... 22  
ML Net Fault Conditions.......................................................... 22  
Restoring Factory Defaults ...................................................... 23  
Care & Maintenance................................................................ 23  
Specifications.......................................................................... 24  
Declaration of Conformity....................................................... 26  
 
Mark Levinson  
Introduction  
Thank you for purchasing the Nº531H, Nº532H, Nº533H or Nº535H  
Power Amplifier. True to Mark Levinson® tradition, the audio  
excellence and performance levels of the Nº500H series amplifiers  
are unrivaled in today’s marketplace.  
The Nº500H series amplifiers redefine the concept of outstanding  
performance in their categories. Drawing from the Mark Levinson  
heritage, while utilizing a new, straightforward, balanced, current-  
feedback design, creates a new series of amplifiers that must be  
listened to in order to be fully appreciated. The final result is  
impressive, even for the Mark Levinson high standard of excellence.  
Product Description  
Independent power supply components are used for each channel  
to maximize the isolation between channels, thus improving  
imaging. Isolated chassis and signal grounds minimize noise to  
optimize detail, even at low listening levels.  
The amplifier channel itself is simple but elegant. Like the Nº532,  
the audio path is fully differential, thereby handling balanced  
input signals in their native format, ensuring no noise is added  
by unnecessary signal conversions. Care was taken in component  
selection, insuring high-quality passive components are used in  
critical locations, maximizing the potential sonic benefits.  
2
The Nº500H Series amplifiers may be operated through a network-  
capable Ethernet port for use with ML Net and external protocol  
controllers, and standard DC trigger controls.  
Embracing new technology with the same level of enduring  
excellence, the Nº500H Series amplifiers are each the finest in their  
category. Truly impressive output capabilities, combined with the  
high-power efficiency of all Mark Levinson amplifiers, make the  
Nº500H Series remarkably capable amplifiers, sure to impress even  
the most demanding of audio enthusiasts.  
Whats in the Box  
The shipping box includes:  
Quantity  
Item  
Power amplifier  
1
Nº500H series owner’s manual (this document)  
Heavy white gloves  
1
2 pairs  
Cable with 3.5mm mini-plugs (for use with trigger)  
1
1
Detachable AC power cord*  
*varies by destination country  
 
Nº500H Series Power Amplifier  
Register your Nº500H series amplifier online at  
the original, dated sales receipt as proof of warranty coverage.  
Product Registration  
Installation Considerations  
The Nº500H series power amplifier requires special care during  
installation to ensure optimal performance. Pay particular  
attention to instructions included in this section and to  
precautions included throughout this owner’s manual.  
Unpacking  
DO save all packing materials for possible future shipping needs.  
DO inspect the amplifier for signs of damage during shipment.  
If damage is discovered, contact your authorized Mark Levinson  
dealer for assistance in making appropriate claims.  
DO locate and remove the accessory bag from the carton. Make  
sure it contains all of the items listed in the “What’s in the Box”  
table on the previous page. If not, contact your authorized Mark  
Levinson dealer.  
3
Caution!  
DO NOT attempt to lift or move the power amplifier without  
adequate assistance. The shipping weight of the amplifier  
exceeds what a single person should lift alone. To avoid injury  
or damage to the unit, at least two people are required to lift or  
move the amplifier.  
Two pairs of knit white gloves with special gripping surfaces  
on the palms and fingers are ncluded with the amplifier. Wear  
these gloves when lifting or moving the amplifier.  
DO install the power amplifier on its own shelf for proper  
ventilation.  
Placement and  
Ventilation  
DO install the amplifier chassis on a solid, flat, level surface.  
DO install the power amplifier close to associated components to  
keep interconnecting cables as short as possible.  
DO select a dry, well-ventilated location out of direct sunlight.  
DO allow at least 3 to 4 inches (8 to 10cm) of clearance above and  
on each side of the amplifier for proper heat dissipation.  
 
Mark Levinson  
DO allow at least 6 inches (15cm) of clearance behind the amplifier  
so that the power cord and cables have space to bend without  
becoming crimped or strained.  
DO NOT place the amplifier chassis on a thick rug or carpet or  
cover the amplifier with a cloth, as this might prevent proper  
cooling.  
DO NOT obstruct the ventilation holes on the top and bottom of  
the chassis or reduce airflow through the amplifier.  
DO NOT place the amplifier chassis near low-level components.  
The power amplifier is capable of producing large output currents  
and hence significant magnetic fields, which can induce noise in  
sensitive components.  
DO NOT expose the power amplifier to high temperatures,  
humidity, steam, smoke, dampness, or excessive dust. Avoid  
installing near radiators and other heat-producing appliances.  
Warning!  
MAKE SURE all components are properly grounded. Do not  
defeat the safety purpose of polarized or grounding-type plugs  
with “ground-lifter” or “cheater” adapters. Doing so may cause  
dangerous voltage to build up between components, which can  
result in personal injuries and/or product damage.  
4
Power Requirements  
The Nº500H series power amplifier is configured at the factory for  
100, 120, or 230 VAC power operation at 50Hz or 60Hz. Before  
operating the amplifier, ensure that the power label on the rear  
panel near the AC input connector indicates the correct operating  
voltage.  
Caution!  
DO NOT attempt to adjust the operating voltage. Consult a Mark  
Levinson dealer if the operating voltage is incorrect or must be  
changed for relocation purposes.  
Different operating voltages may require the use of different  
power cords and/or attachment plugs. Contact a Mark Levinson  
dealer for additional assistance.  
The Nº500H series power amplifier is capable of passing remarkable  
sound at exceptional power levels. Depending on listening habits,  
loudspeaker demands, and the number of power amplifiers present  
in the system, it is possible that the electrical service may become  
the limiting performance factor of your system.  
 
Nº500H Series Power Amplifier  
If this case occurs, consider installing a dedicated AC circuit for the  
system. Contact a licensed electrician for assistance. If more than  
one AC circuit is providing power to the system, contact a licensed  
electrician to ensure that all components are operating with the  
same solid, low-impedance ground reference.  
Caution!  
Building regulations and electrical codes differ from location to  
location, making it impossible to anticipate the requirements  
of amplifier high-current AC circuits, such as the No500H series  
power amplifier is capable of using. Contact a local, licensed  
electrician for further information.  
Operating States  
The Nº500H series power amplifier is designed for continuous  
operation and has three operating states:  
Off – AC power is disconnected using the rear-panel Power  
switch or by removing the power cord from the rear panel.  
Standby – this is an energy-saving mode. AC power is only  
connected to the low-voltage power supply, so all nonaudio  
functions, such as ML Net and triggers, are active.  
5
On – the amplifier is fully powered and all outputs are active.  
The amplifier should be unplugged during lightning storms and  
extended periods of nonuse as a precaution against potentially  
damaging power surges through the line.  
Caution!  
BEFORE moving the power amplifier, make sure it is powered  
off with the Power button. Then make sure the power cord is  
disconnected from the rear panel connector and the electrical  
outlet.  
 
Mark Levinson  
Front Panel  
The front panel contains one LED and one Standby button –  
as shown.  
Status LED  
standby  
Standby  
Button  
Standby Button  
Places the amplifier into Standby mode. Pressing the button while  
the amplifier is in Standby mode turns on the amplifier.  
6
Standby mode powers only the low-voltage power supply, control,  
and communication circuits.  
Status LED  
Indicates the operating state of the amplifier and provides basic  
diagnostic information if a fault condition occurs. The table below  
identifies the basic behavior of the Status LED.  
LED Behavior  
Fully lit  
Description  
Indicates that the amplifier is powered on.  
Indicates that the amplifier is in Standby mode.  
Indicates that the amplifier is powered off.  
Slowly blinking  
Not lit  
Refer to the “Troubleshooting” section in the back of the manual  
for a description of the Status LED behavior when a fault is  
detected.  
 
Nº500H Series Power Amplifier  
Rear Panel  
The images below show a one-channel, two-channel, three-channel  
and five-channel rear panel view.  
Audio Input  
Ethernet Port  
Trigger Input/Output  
Nº531H Monaural  
Power Amplifier (1 x 300W)  
Power Switch  
Loudspeaker  
Binding Posts  
AC Input  
Audio Input  
Ethernet Port  
Trigger Input/Output  
Nº532H Dual-Channel  
Power Amplifier (2 x 300W)  
Power Switch  
Loudspeaker  
Binding Posts  
AC Input  
Audio Input  
Ethernet Port  
Trigger Input/Output  
Nº533H Three-Channel  
Power Amplifier (3 x 300W)  
Power Switch  
AC Input  
Loudspeaker  
Binding Posts  
7
Ethernet Port  
Trigger Input/Output  
Nº535H Five-Channel  
Power Amplifier (5 x 200W)  
Audio Input  
Power Switch  
Loudspeaker  
Binding Posts  
AC Input  
Power Switch  
Controls the AC power to the input of the amplifier when a  
power cord is connected from the electrical outlet to the AC input  
connector on the rear panel.  
When the Power switch is pressed to turn on the unit, the amplifier  
enters the Standby mode.  
Note  
The audio outputs of this power amplifier are considered Class 2 (CL2)  
circuits in North America. This means the wire connected between this  
amplifier and the speaker(s) shall be rated at minimum Class 2 (CL2)  
and shall be installed according to the U.S. National Electrical Code  
(NEC) Article 725 or Canadian Electrical Code (CEC) Section 16.  
 
Mark Levinson  
One balanced and one single-ended (unbalanced) connector is  
available for each audio channel input.  
Audio Channel Inputs  
Single-Ended Inputs  
The RCA connectors accept single-ended signals from preamplifiers  
with singled-ended (RCA) outputs. A small toggle switch is  
provided to select either the balanced (XLR) or single-ended (RCA)  
input connector on each channel.  
If your preamplifier does not support a balanced connection to the  
power amplifier, connect the single-ended output to the RCA input  
on the amplifier. Make sure the toggle switch is set to the position  
closest to the RCA connector.  
Push  
Pin 2  
Pin 1  
Pin 3  
Balanced Inputs  
Accepts a signal from a preamplifier with balanced outputs via the  
high quality XLR connector. Make sure the toggle switch is set to  
the position closest to the XLR connector.  
Balanced (female XLR)  
Input Connector  
Pin Assignments:  
Pin 1: Signal Ground  
Pin 2: Signal + (non-inverting)  
Pin 3: Signal - (inverting)  
Connector Shell - Chassis Ground  
The pin assignments, shown on the left, of the XLR-type female  
input connector are consistent with the standards adopted by the  
Audio Engineering Society. Refer to the operating manual of your  
preamplifier to ensure that the pin assignments of its balanced  
output connectors correspond to the Mark Levinson power  
amplifier. If not, wire the cables so that the appropriate output pin  
connects to the equivalent input pin.  
8
The Nº531H, 532H and 533H utilize custom-made, gold-plated,  
high-current loudspeaker binding posts, two for each output  
channel. The Nº535H uses different high-current binding posts  
due to space constraints. The positive binding posts, labeled +  
(positive), are red; the negative binding posts are black and are  
labeled – (negative).  
Loudspeaker Binding  
Posts  
Note  
Ensure when connecting the loudspeaker that at least one positive and  
one negative binding post is used. There is NO ground reference.  
Caution!  
Be careful to not short the positive and negative outputs  
together. Do not short the positive or negative outputs to chassis  
or any other safety ground. The amplifier must be powered off  
during installation and whenever input and/or output cables are  
being connected.  
 
Nº500H Series Power Amplifier  
Banana plugs can also be used to connect the speaker cables to the  
loudspeaker binding posts. Banana plugs are not available on the  
230 VAC model.  
Caution!  
DO NOT OVERTIGHTEN the binding posts. The innovative  
design of these binding posts provides more leverage; hence,  
high-contact, tight pressure connections are achieved when  
finger-tightened.  
DO NOT FORCE the binding post “wings” over a bent or  
oversized connector. Doing so may damage the binding post.  
Trigger Input and  
Output  
The rear panel of the amplifier has two trigger connectors – one  
input and one output. The trigger input can receive a 3-12V  
DC signal from a connected component. The trigger output  
passes through the trigger input signal, enabling a daisy-chain of  
amplifiers to be controlled by a single trigger signal.  
The triggers enable the power amplifier to be automatically  
powered on or put into Standby mode, by the state of other devices  
in the system. The trigger output can also affect other power  
amplifiers in the same manner.  
9
Receiving a trigger signal causes the amplifier to change its power  
state. If the amplifier is powered on, then 0V on the trigger signal  
puts the amplifier into Standby or mode. Conversely, an amplifier  
in Standby mode is powered on when 3-12VDC is received on the  
trigger input.  
Ethernet Port  
The Ethernet port is a standard 10Base-T connection for use with  
external control and networking. The Nº500H series supports  
connection to a router or network, and to a PC-compatible  
computer.  
This connection is designed for use with proprietary Mark Levinson  
external controllers, such as ML Net, or can provide serial port  
control. For a list of the serial commands available, refer to the  
separate document, No. 5 series Power Amplifier Serial Protocol  
Definitions.  
AC Input  
Caution!  
Provides AC power to the amplifier when the supplied power cord  
is connected from the AC Input connector on the rear panel to an  
electrical outlet.  
Before operating the amplifier, verify that the voltage label  
near the AC input connector indicates an operating voltage  
compatible with the voltage level of the electrical outlet you  
intend to use.  
 
Mark Levinson  
Network Setup  
The Nº500H series power amplifier supports a network connection  
through the Ethernet port. The Nº500H series can connect to a  
network through use of a router or directly to a computer.  
The Nº500H series can be:  
1. Connected to a router with DHCP active – We highly  
recommend using this option. Since the DHCP (Dynamic Host  
Configuration Protocol) automatically assigns the IP (Internet  
Protocol) addresses, setup is much simpler.  
2. Connected to a router with DHCP not active – This method  
requires more advanced networking knowledge to set up  
because it uses fixed static IP addressing.  
3. Connected directly to a computer with no router – We  
recommend only using this option when a router is not  
available. This method requires more advanced networking  
knowledge to set up because it uses fixed static IP addressing  
and a special network crossover cable.  
This section provides general instructions for all three methods.  
10  
The following materials are required to connect the Nº500H series  
to the network with a router:  
Material Requirements  
Nº500H series power amplifier  
Two twisted-pair network cables  
PC-compatible computer with 10/100Base-T network card  
10/100Base-T router  
The Nº500H series does not support wireless connection. However, a  
cable attached from the amplifier to a wireless adapter can be used to  
interface with a wireless network.  
Note  
The following materials are required to connect the Nº500H series  
to a computer without the use of a router:  
Nº500H series power amplifier  
Network crossover cable  
PC-compatible computer with 10/100Base-T network card  
 
Nº500H Series Power Amplifier  
The PC-compatible computer used to connect to the Nº500H series  
must have the following software installed:  
Computer  
Requirements  
Windows® 2000 or Windows XP®  
Web browser (Microsoft® Internet Explorer® 6.0 or higher  
preferred)  
Note  
If DHCP is not active, the computer must be set up with a Static IP  
address. Refer to the “Setting Up the Computer” procedure found later  
in this section for instructions.  
Connecting the Cables  
The Nº500H series can be connected to the computer in two  
ways – through a router or directly to the computer. Before  
connecting the cables, ensure that the computer and the amplifier  
are powered down.  
To Connect Using a Router:  
Router  
11  
Computer  
Amplifier  
1. Connect a network cable from the router to the Ethernet port  
on the rear panel of the amplifier.  
2. Attach a second network cable from the router to the Ethernet  
port of the computer.  
To Connect Without a Router:  
Use a network crossover cable to connect the amplifier directly  
to the computer. Different from a standard network cable, the  
crossover cable is designed to connect network access ports directly  
together without a hub, router, or switch.  
Crossover  
Cable  
Computer  
Amplifier  
Connect the crossover cable from the Ethernet port on the rear  
panel of the amplifier to the Ethernet port of the computer.  
 
Mark Levinson  
When connected to a computer, the Nº500H series has an internal  
Web page that provides access to:  
Internal Web Page  
Network Setup – allows the user to modify the network setup  
parameters. Accessing the internal Web page is the ONLY way  
to modify the network setup parameters of the Nº500H series  
amplifier.  
Status Information – provides basic status information of  
the Nº500H series amplifier.  
Error Reporting – tracks system-related error messages for  
the Nº500H series amplifier. This page is a diagnostics tool for  
Mark Levinson Customer Service use.  
The amplifier MUST be connected to a computer via the Ethernet  
port before you can access the internal Web page. Continue to the  
next section – “Network Setup” – for further instructions.  
The Web page also has a Restore Defaults button, which resets the  
parameters to their factory default values. Clicking the Restore  
Defaults button displays a pop-up asking for confirmation; click Yes  
to restore the factory default values.  
12  
Accessible only through the Nº500H series internal Web page, the  
network setup parameters include:  
Network Setup  
Parameters  
Static IP Address – provides a fixed IP address. This IP  
address is NOT automatically selected; it must be entered.  
If DHCP is on, then this parameter is not used. IP address  
192.168.50.5 is the factory default value for the Nº500H series.  
 
Nº500H Series Power Amplifier  
Subnet Mask – identifies the subnet mask for the Nº500H  
series. This IP address is automatically assigned by DHCP.  
If DHCP is off, then the address must be entered manually  
and must agree with the subnet mask address of the router.  
IP address 255.255.255.0 is the factory default value for the  
Nº500H series.  
Host Name – indicates the network name given to the  
Nº500H series amplifier. This host name is unique to each  
amplifier and is comprised of two parts, separated by an  
underscore. The first part contains one to eight characters that  
can be modified via the internal Web page of the amplifier.  
The second part of the host name contains the last six  
characters of the MAC address. This MAC address is unique to  
each Nº500H series amplifier. The default is “NO500H_xxxxxx”  
where “x” stands for the last six characters of the unique MAC  
address for that amplifier.  
DHCP – turns the DHCP capability on or off. When activated,  
DHCP assigns a unique IP address to the Nº500H series. The  
factory default value is On. We recommend leaving DHCP set  
to On.  
Connecting With  
DHCP  
Use this procedure if you are using a router with DHCP active to  
connect to the amplifier. Otherwise, skip to the next procedure.  
13  
(Recommended)  
1. Connect the amplifier to the router, as described in the earlier  
“Connecting the Cables” procedure. Make sure that everything  
is powered off before making cable connections.  
2. Turn on the PC and router. Verify that the router has DHCP  
active.  
3. Press the Power button on the amplifier.  
4. On the computer, open the Internet Explorer Web browser.  
The “x” characters stand for the last six characters of the  
unique MAC address for that amplifier.  
6. Press Enter.  
If Internet Explorer is unable to find the amplifier, then you  
must find the IP address that was assigned to the amplifier by  
the router. If required, refer to your router’s owner’s manual  
for further details. Repeat this step using the IP address for the  
amplifier that was assigned by the router.  
7. The Home tab of the amplifier’s internal Web page is now  
displayed. The tab is in red text to indicate that it’s the current  
page.  
The network connection is now complete.  
 
Mark Levinson  
If DHCP is not used, then the computer must be set up too. Use  
Setting Up the  
Computer  
this procedure to set up the computer, then continue to the next  
procedure to connect to the amplifier. For the computer to find  
the amplifier, the LAN (Local Area Network) and TCP/IP (Internet  
Protocol) settings of the computer must be set up. The parameter  
setups vary slightly depending upon the operating system of the  
computer. Refer to the procedure below that matches the operating  
system on your computer.  
Note  
Due to your preference settings in the Windows operating system,  
the names and order of the dialog boxes may vary slightly from these  
instructions.  
Network Setup for Windows XP  
1. From the Start menu, select Control Panel.  
2. Double-click on the Network Connections option.  
3. Double-click on the Local Area Connection option.  
4. Click the Properties button to open the Local Area Connection  
Properties menu. If the computer is not currently connected  
to an active network, Step 3 has already opened the Local Area  
Connection Properties menu.  
14  
5. Click on the Internet Protocol (TCP/IP) line item so that it is  
highlighted.  
6. Click the Properties button.  
7. Select the “Use the following IP address” option. The IP  
address, Subnet mask, and Default gateway boxes are no longer  
grayed out and can now be modified.  
8. Enter the following values:  
IP address: 192.168.50.x – where x stands for a number  
other than 0, 3, 4, 5 or 255  
Subnet mask: 255.255.255.0  
Do not enter a value in the Default gateway parameter  
The computer must have a unique address and be on the same  
subnet as the amplifier.  
9. Click “OK” to save and exit the menu.  
10. Open the Internet Explorer Web browser.  
11. From the menu bar, select the Tools Internet Options menu.  
12. Select the Connections tab.  
13. Click the LAN Settings button.  
14. Verify that “Use a proxy server for your LAN” is NOT checked.  
15. Click “OK” to save and exit the menu.  
 
Nº500H Series Power Amplifier  
Network Setup for Windows 2000  
1. From the Start menu, select Settings Control Panel.  
2. Double-click on the Network and Dial-Up Connections option.  
3. Double-click on the Local Area Connection option.  
4. Click the Properties button to open the Local Area Connection  
Properties menu. If the computer is not currently connected  
to an active network, Step 3 has already opened the Local Area  
Connection Properties menu.  
5. Click on Internet Protocol (TCP/IP) line item so that it is  
highlighted.  
6. Click the Properties button.  
7. Select the “Use the following IP address” option. The IP  
address, Subnet mask, and Default gateway boxes are no longer  
grayed out and can now be modified.  
8. Enter the following values:  
IP address: 192.168.50.x – where x stands for a number  
other than 0, 3, 4, 5 or 255  
Subnet mask: 255.255.255.0  
Do not enter a value in the Default gateway parameter  
The computer must have a unique address and be on the same  
subnet as the amplifier.  
15  
9. Click “OK” to save and exit the menu.  
10. Open the Internet Explorer Web browser.  
11. From the menu bar, select the Tools Internet Options menu.  
12. Select the Connections tab.  
13. Click the LAN Settings button.  
14. Verify that “Use a proxy server for your LAN” is NOT checked.  
15. Click “OK” to save and exit the menu.  
Connecting With  
Static IP Addressing  
Use this procedure if you plan to connect with static IP addresses  
(DHCP is turned off). Otherwise, skip to the next procedure to  
connect directly to a computer. For the computer to find the  
amplifier, the TCP/IP and LAN settings of the computer must be set  
up. Refer to the previous “Setting up the Computer” procedure for  
instructions.  
1. Connect the amplifier to the router, as described in the earlier  
“Connecting the Cables” procedure. Make sure that everything  
is powered off before making cable connections.  
2. Turn on the PC and the router. Verify that the router has DHCP  
turned off, if required.  
 
Mark Levinson  
3. Set up the router to the IP address 192.168.50.x – where x  
stands for a number other than 0, 3, 4, 5, 255, or the number  
used for the computer IP address. The router must be on the  
same subnet as the amplifier and the computer, but also must  
have its own unique address. Refer to the router’s owner’s  
manual for instructions on how to modify the IP address.  
4. Press the Power button on the amplifier.  
5. On the computer, open the Internet Explorer Web browser.  
6. On the address (URL) line, type in the static IP address of the  
amplifier Web page loads.  
7. The Home tab of the amplifier’s internal Web page is now  
displayed. The tab is in red text to indicate that it is the current  
page.  
8. Observe that the Status section of the Web page identifies the  
host name of the amplifier. The host name can be modified,  
but only the first eight characters are affected; anything after  
the underscore may not be modified.  
To change the host name of the amplifier:  
A. Type the new name into the white box to the right of the  
parameter. The new name must be made from the capital  
letters, A to Z, and the numbers, 0 to 9. Underscores may  
also be used. Only eight characters are allowed.  
16  
Note  
The host name MUST start with an alpha-character (A to Z). This is a  
standard networking rule.  
B. Click the Submit button to save the new value.  
C. Click the Refresh button in the Status section of the Web  
page to observe the new host name.  
9. Observe that the Status section of the Web page also identifies  
the IP address of the amplifier. The static IP address can be  
modified, if desired.  
To change the IP address of the amplifier:  
A. Type the new IP address into the white box to the right of  
the parameter.  
B. Click the Submit button to save the new value.  
C. Enter the new IP address of the amplifier into the  
browser. The amplifier Web page loads, reflecting the new  
information.  
The network connection is now complete.  
 
Nº500H Series Power Amplifier  
Use this procedure to connect directly to a computer if you are not  
using a router. For the computer to find the amplifier, the TCP/  
IP and LAN settings of the computer must be set up. Refer to the  
earlier “Setting up the Computer” procedure for instructions.  
Direct Connection  
1. Connect the amplifier to the computer, as described in  
the earlier “Connecting the Cables” procedure. Make sure  
that both the amplifier and the computer are powered off  
before connecting.  
2. Press the Power button on the amplifier.  
3. On the computer, open the Internet Explorer Web browser.  
4. On the address (URL) line, type in the static IP address of the  
amplifier Web page loads.  
5. The Home tab of the amplifier’s internal Web page is now  
displayed. The tab is in red text to indicate that it is the  
current page.  
6. Observe that the Status section of the Web page identifies the  
host name of the amplifier. The host name can be modified,  
but only the first eight characters are affected; anything after  
the underscore may not be modified.  
17  
To change the host name of the amplifier:  
A. Type the new name into the white box to the right of the  
parameter. The new name must be made from the capital  
letters, A to Z, and the numbers, 0 to 9. Underscores may  
also be used. Only eight characters are allowed.  
Note  
The host name MUST start with an alpha-character (A to Z). This is a  
standard networking rule.  
B. Click the Submit button to save the new value.  
C. Click the Refresh button in the Status section of the Web  
page to observe the new host name.  
7. Observe that the Status section of the Web page also identifies  
the static IP address of the amplifier. The static IP address can  
be modified, if desired.  
To change the IP address of the amplifier:  
A. Type the new IP address into the white box to the right of  
the parameter.  
B. Click the Submit button to save the new value.  
C. Enter the new IP address of the amplifier into the  
browser. The amplifier Web page loads, reflecting the  
new information.  
The network connection is now complete.  
 
Mark Levinson  
ML Net  
The ML Net protocol allows you to control two or more Mark  
Levinson products simultaneously via the Ethernet port.  
Since ML Net operates through the use of a router and the Ethernet  
connection, all devices must have networking capability. Refer to  
the previous section of this manual, “Network Setup,” to set up the  
Nº500H series for network operation.  
Note  
ML Net uses a single “Master” device to control specific functions  
of other ML Net-capable Mark Levinson products. An ML Net  
system can only have one Master device; all other devices in the  
system become “Slaves”. Slave devices receive and respond to the  
commands of the master device.  
Masters and Slaves  
The Nº500H series power amplifier is always a slave device. A  
separate master device must be used in conjunction with the  
Nº500H series amplifier.  
As a slave device, the amplifier responds to the following ML Net  
commands sent from the master device:  
18  
Status Reporting – status conditions of the Nº500H  
series slave(s) are reported to the master device; status  
includes Temperature, Session Time, Total On Time, and  
Fault Reporting.  
Standby State – the master device controls the Standby state  
of the amplifier.  
Synchronized LEDs – the Standby LEDS of the master device  
and all assigned slave devices blink in unison.  
After configuring each device on the network, connect all of the  
devices together. Ensure that all components are powered off or in  
Standby mode before connecting to the Ethernet ports.  
Connecting the  
Devices  
Each device must be connected to the same network and use the  
same subnet. Refer to the “Network Setup” section for instructions  
on how to connect the Nº500H series to the network.  
If more devices are desired than the router can handle, connect the  
additional devices first to a switch, then connect the uplink of the  
switch to a normal port on the router.  
 
Nº500H Series Power Amplifier  
The figure below illustrates a typical ML Net setup:  
Nº532 Media Console  
(Master)  
Nº500 Series  
Power Amplifier #4  
(Slave)  
Router  
Nº500 Series  
Power Amplifier #1  
(Slave)  
Nº500 Series  
Power Amplifier #3  
(Slave)  
Nº500 Series  
Power Amplifier #2  
(Slave)  
Discovering Slaves  
Status Reporting  
Before the master device can control any slave device, the slave  
devices must be “discovered” and assigned to the master device.  
Refer to the Owner’s Manual of the designated master device for  
further information about discovering and assigning slave devices.  
19  
The Nº500H series slave(s) can report the following status  
information to the master device:  
Temperature – the current operating temperature of the  
amplifier(s).  
Session Time – the amount of time that the amplifier(s)  
has been powered on.  
Total On Time – the total amount of hours that the  
amplifier(s) has been powered on since its manufacture.  
If a slave device is inactive, unassigned, or assigned to a different  
master, then status information is not available.  
Fault Reporting  
The Nº500H series slave(s) also reports fault information to the  
master device. If a slave device is inactive, unassigned, or assigned  
to a different master, then error reporting is not available. For more  
information about possible fault conditions, refer to the  
“Troubleshooting” section of the manual.  
 
Mark Levinson  
Troubleshooting  
Incorrect operation is sometimes mistaken for malfunction. If  
problems occur, use this section for troubleshooting information. If  
problems persist, contact your authorized Mark Levinson dealer.  
1. Examine the power cord to ensure that it is connected to both  
the rear panel connector of the amplifier and an electrical  
outlet.  
No Power  
2. Make sure the amplifier is powered on with the Power switch.  
3. Make sure the amplifier is not in Standby mode. The front  
panel LED should be at full brightness.  
4. Examine the electrical circuit breaker to ensure that power  
is being supplied to the electrical outlet to which the amplifier  
is connected.  
5. Verify that the voltage rating on the rear panel of the amplifier  
matches the voltage rating of the electrical outlet. If the  
voltages do not match, no power is sent to the outputs of  
the amplifier.  
1. Make sure that the source device is powered on, playing audio,  
and set to the right output connector.  
No Output  
20  
2. Examine cables to ensure a solid connection between the  
amplifier and associated components.  
3. Make sure the amplifier's output connectors are connected to  
operational loudspeakers.  
4. Ensure that the amplifier is not in a fault condition. When the  
amplifier experiences a fault, the output is muted and the Status  
LED on the front panel blinks in a rapid pattern, indicating:  
LED Behavior  
Description  
Rapidly blinking  
(on most of the time)  
Indicates that a power-related fault has  
occurred.  
Rapidly blinking  
(on half of the time)  
Indicates that a signal-related fault* has  
occurred.  
Rapidly blinking  
(off most of the time)  
Indicates that a thermal-related fault has  
occurred.  
*Signal-related faults include significant DC offset at the output due to either DC in the input  
signal or a failed component within the amplifier OR excessive current demands due to a  
short-circuited loudspeaker wire.  
You must assign the slave from the master device. Verify that the  
slave you want to assign is listed in the master device list and  
check its current state. For further explanations on assigning slave  
devices, refer to the owner’s manual of the master device.  
Can’t Assign in ML Net  
 
Nº500H Series Power Amplifier  
1. Verify that the master device and the Nº500H series amplifier are  
No Response to  
Commands in ML Net  
properly connected together with a router.  
2. Verify that the Nº500H series amplifier’s network setup is correct.  
Access to the internal Web page via a computer is required to  
verify the network settings of the Nº500H series.  
No Connectivity Via  
Ethernet  
Verify that the network cables are properly connected between  
the router, switch, or hub and the amplifier. If connecting to  
a computer, verify that the computer network cable is in the  
correct port.  
Verify the age of the router, switch, or hub. There may be  
a communication issue with the Nº500H series and older  
network devices. Power cycle the Nº500H series and use a  
newer router, switch, or hub between the network and the  
amplifier.  
If connected directly to the computer, make sure a crossover  
cable is used.  
Verify that the router and computer have valid IP addresses.  
Verify that the proxy server in the computer’s network setup is  
disabled. An active proxy server can interfere with the software  
upgrade procedure.  
21  
If the web browser cannot find the host name of the amplifier,  
verify the following:  
Ensure that the local DNS server is properly configured.  
We recommend configuring the local DNS Server to “DNS  
Forwarding” mode. To configure the DNS Server, refer to  
the setup manual of the server.  
If using a subdomain, enter the complete address into the  
Enter the IP Address of the amplifier into the browser. For  
example, “http://192.168.50.5”  
1. Power-cycle the Nº500H series, waiting at least 10 seconds  
between powering the amplifier off and on.  
If All Else Fails...  
2. Restore the default settings on the internal web page.  
more information.  
4. Contact your Mark Levinson dealer.  
.
 
Mark Levinson  
Fault Protection  
The Nº500H series is designed to prevent damage to themselves  
and associated components. These extensive features protect both  
the critical circuitry of the amplifier itself and shield connected  
loudspeakers from serious damage due to high-power levels.  
Basic protections designed into the Nº500H series include fuses  
on each amplifier channel to protect against excessive current  
conditions, such as driving shorted outputs. Inrush limiting  
prevents premature aging of the power supply components during  
power-up; once the power supply has been charged, this feature  
goes off-line until the amplifier is powered up again.  
The Nº500H series actively monitors operating temperature, output  
current demands and the presence of DC on the outputs. The  
amplifier will shut down under any of these conditions and report  
the fault via the front panel LED and over the Ethernet connection.  
The amplifier must be shut down to clear the fault condition before  
being powered back up.  
22  
ML Net Fault Conditions  
The slave devices in an ML Net system can report fault conditions  
to the master device. Fault condition reports are displayed on the  
display of the master device when the fault occurs. Some faults  
may cause the amplifier to enter Standby mode. Power-cycling the  
amplifier clears the fault condition, providing the  
fault condition no longer exists.  
Some faults do not allow power to be reapplied to the amplifier until  
the fault condition no longer exists to protect the amplifier from  
damage.  
Note  
The fault conditions reported are:  
Slave Device DC Offset – indicates that the Nº500H series  
amplifier is experiencing a signal-related fault.  
Slave Device Over Current – indicates that the Nº500H  
series is experiencing an over-current condition.  
Slave Device Over Temperature – indicates that the  
Nº500H series amplifier is overheating.  
Signal – indicates that the Nº500H series has experienced a  
general signal fault.  
 
Nº500H Series Power Amplifier  
Restoring Factory Defaults  
Pressing the Factory Default button on the internal Web page of  
the amplifier resets all settings to their factory default values. If  
the internal Web page is not available, there is also a key press  
sequence available. Follow the instructions below to reset the  
factory default settings from the front panel.  
1. Power off the amplifier.  
2. Press and hold the Standby button.  
3. Press the Power button to turn on the power.  
4. Keep holding down the Standby button until the front panel  
LED blinks four times.  
5. Release the Standby button.  
Now reset to its factory default state, the amplifier will reinitialize.  
Care & Maintenance  
The Nº500H series amplifier requires routine care and maintenance  
to ensure optimal performance. The bulleted items indicate  
maintenance procedures that should be performed on a regular  
basis.  
23  
Turn off the Nº500H series amplifier and unplug the rear  
AC power cord before performing maintenance to the  
amplifer.  
Failure to perform the maintenance procedures included in this section  
may void the manufacturer’s warranty and/or standard repair policies.  
Note  
To remove dust from the amplifier’s exterior surface, use a  
feather duster or a low-pressure blower.  
To remove dirt and fingerprints from the amplifier’s exterior  
surface, use a soft, lint-free cloth. DO NOT use metal polish or  
a cloth made with steel wool.  
If needed, this cloth can be dampened with isopropyl alcohol.  
DO NOT dampen the cloth with Benzene, acetone-based  
cleaners, or other commercial cleaners.  
Wipe the amplifier’s exterior surface in the same direction as  
the grain of the brushed aluminum.  
Caution!  
DO NOT apply liquid directly to the amplifiers exterior surface.  
Doing so may damage electrical components.  
 
Mark Levinson  
Nº531H, 532H, 533H  
Specifications  
All specifications are subject to change without notice.  
Input & Output Connectors  
• one balanced XLR input per channel  
• one unbalanced RCA input per channel  
• one pair “Hurricane” loudspeaker outputs with banana-plug  
sockets per channel (banana-plug socket not available on the  
230 VAC models)  
Control Connectors  
Rated Output Power  
• one Ethernet 10Base-T port  
• one 3.5mm mono (tip/sleeve) mini plug trigger input, 3-12Vdc  
• one 3.5mm mono (tip/sleeve) mini plug trigger output, 3-12Vdc  
• 3-pin IEC standard power connector  
20Hz to 20kHz at <0.5% THD, 300W per channel @ 8 Ω, full  
output from 2.25Vrms  
Frequency Response  
Signal-to-Noise Ratio  
Input Impedance  
Voltage Gain  
within 0.5dB from 10Hz to 20kHz  
>85dB, reference level: 2.83 Vrms  
60 kΩ (balanced); 30 kΩ (unbalanced)  
26.8dB  
24  
Input Sensitivity  
2.83Vrms output at 130mVrms input  
Power Requirements  
100V~, 120V~, 230V~, factory set for destination country  
Nº531H: 300W; Nº532H: 600W; Nº533H: 900W  
Dimensions*  
• Height (with feet): 7.65" (19.4cm)  
• Height (without feet): 6.97" (17.7cm)  
• Width: 17.75" (45.1cm)  
• Depth: 19.83" (50.4cm)  
*See dimensions diagram on the next page.  
Weight  
• Net weight: Nº531H: 52.5 lbs (23.8kg)  
Nº532H: 74.0 lbs (33.6kg)  
Nº533H: 90.0 lbs (40.8kg)  
• Shipping weight: Nº531H: 62.5 lbs (28.4kg)  
Nº532H: 84.0 lbs (38.1kg)  
Nº533H: 100.0 lbs (45.4kg)  
Operating Environment  
• Operating temperature: 0º to 35ºC (32º to 95ºF)  
• Storage temperature: –30º to 75ºC (–22º to 167ºF)  
• Relative humidity: 95% maximum without condensation  
 
Nº500H Series Power Amplifier  
Nº535H Specifications  
All specifications are subject to change without notice.  
Input & Output Connectors  
• five balanced XLR inputs per channel  
• five unbalanced RCA inputs per channel  
• five pairs loudspeaker outputs with banana-plug sockets  
per channel (banana-plug socket not available on the  
230 VAC models)  
Control Connectors  
Rated Output Power  
• one Ethernet 10Base-T port  
• one 3.5mm mono (tip/sleeve) mini plug trigger input, 3-12Vdc  
• one 3.5mm mono (tip/sleeve) mini plug trigger output, 3-12Vdc  
• 3-pin IEC standard power connector  
20Hz to 20kHz at <0.5% THD, 200W per channel @ 8 Ω, full  
output from 1.84Vrms  
Frequency Response  
Signal-to-Noise Ratio  
Input Impedance  
Voltage Gain  
within 0.5dB from 10Hz to 20kHz  
>85dB, reference level: 2.83 Vrms  
60 kΩ (balanced); 30 kΩ (unbalanced)  
26.8dB  
25  
Input Sensitivity  
Power Requirements  
Dimensions*  
2.83Vrms output at 130mVrms input  
100V~, 120V~, 230V~, 1000W, factory set for destination country  
• Height (with feet): 7.65" (19.4cm)  
• Height (without feet): 6.97" (17.7cm)  
• Width: 17.75" (45.1cm)  
• Depth: 19.83" (50.4cm)  
*See dimensions diagram on the next page.  
Weight  
• Net weight: 98.5 lbs (44.7kg)  
• Shipping weight: 108.5 lbs (49.2kg)  
Operating Environment  
• Operating temperature: 0º to 35ºC (32º to 95ºF)  
• Storage temperature: –30º to 75ºC (–22º to 167ºF)  
• Relative humidity: 95% maximum without condensation  
 
Mark Levinson  
Declaration of Conformity  
Application of Council Directive(s):  
2004/108/EC and 2006/95/EC, as amended.  
Standard(s) to Which Conformity Is Declared:  
EN 55013:2001 + A1:2003 + A2:2006  
EN 55020:2007  
EN 61000-3-3:1995 + A1:2001 + A2:2005  
EN 60065:2002  
Manufacturer:  
Harman International  
1718 W. Mishawaka Road  
Elkhart, IN 46517  
The equipment identified here conforms to the Directive(s) and  
Standard(s) specified above.  
Type of Equipment:  
Models:  
Power Amplifier  
Mark Levinson No.  
531H, 532H, 533H, 535H  
March 2009  
Date:  
26  
 
 
 

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