MuxLab 500755-AMP-RX User manual

© MuxLab Inc. 94-000853-A
8495 Dalton Rd, Montreal, Quebec, Canada. H4T 1V5
Tel: [phone] Fax: [phone]
Toll Free (North America): [phone]
E-mail: [e-mail] URL: www.muxlab.com
Specifications
Environment
2CH analog audio distribution over multiple zones via an IP network
Devices
2CHaudio source equipment, microphone systems, speakers, PAsystems.
Output Power
50W/ch (PMPO) into 8 ohm
100W (PMPO) into 4 ohm (mono)
Frequency response
20 –20,000 Hz (+/- 1 dB)
Front Control
Maximum Volume Preset setting (screw).
Soft reset.
Front Display
4 LEDs for Power, IP status, Amp Overload & Amp clip.
Cabling Requirement
Any Cat5e/6 UTP cable for Ethernet.
AWG 12-18 for speaker.
Connectors
Four (4) Binding post with removable plug for speaker.
One (1) 3.5mm for IR.
One (1) RCA connector for digital audio out.
One (1) RJ45 connector for Ethernet link.
One (1) male RS-232.
One (1) locking power coaxial jack, 2.0x5mm.
IR Frequency
Directional IR: 38KHz to 56KHz
Cable
One (1) Cat 5e/6 or better twisted pair cables required.
Maximum Distance
Cat5e/6: 330ft (100m)
Note: When installed in an electrically noisy environment, an STPcable must be used. Also,
cross-connections in the signal path reduce the effective distance depending on the grade of
cable used.
RJ45 Pin Configuration
Reverse Polarity Sensitive.
Use EIA/TIA 568A or 586B
straight-through wiring.
RJ45 Link
Pin 1 (R) Pin 2 (T)
Pin 3 (R) Pin 6 (T)
Pin 4 (R) Pin 5 (T)
Pin 7 (R) Pin 8 (T)
Power supply (included)
160W maximum, using 32V 5A.
Temperature
Operating : 32° to 90°F (0° to 40°C)
Storage: -4° to 185°F (-20° to 85°C)
Humidity
Maximum 90% (non-condensing)
Enclosure
Steel, painted black.
Dimensions
4.33” x 7.91” x 1.97” (11 x 20.1 x 5 cm)
Weight
1.96lbs (0.89kg)
Warranty
3 Years
Ordering Information
500755-AMP-US Audio/AMP over IP Extender Kit, with Mic & AMP 50W/CH, US
500755-AMP-UK Audio/AMP over IP Extender Kit, with Mic & AMP 50W/CH, UK
500755-AMP-EU Audio/AMP over IP Extender Kit, with Mic & AMP 50W/CH, EU
500755-AMP-TX Audio/AMP over IP Transmitter, with Mic, US
500755-AMP-RX-US Audio/AMP over IP Receiver, with AMP 50W/CH, US
500755-AMP-RX-UK Audio/AMP over IP Receiver, with AMP 50W/CH, UK
500755-AMP-RX-EU Audio/AMP over IP Receiver, with AMP 50W/CH, EU
Compatible Products
500755, 755-AMP-TX, 500755-70V, and other MuxLab AV over IP devices.
Accessories
500755-70V 70V Audio Converter
500917 Wall Mount Transceiver Bracket Kit
500920 16-Port Rackmount Transceiver Chassis
500994 IR Sensor
500998 IR Emitter
Audio/AMP over IP RECEIVER, with AMP 50W/CH
500755-AMP-RX
Quick Installation Guide
Overview
The AUDIO/AMP over IP Receiver, with AMP 50W/CH allows 2CH audio signals to
be extended up to 330ft (100m) via one (1) Cat5e/6 UTP cable in a point-to-point
configuration. Point-to-multipoint and multipoint-to-multipoint is possible by
connecting several Transmitters or Receivers to the same local Ethernet network. These
units support RS232 and IR transmission for remote control of end devices. IR emitters
and sensors are not included, but may be purchased separately if required.
For the point-to-multipoint and multipoint-to-multipoint configuration the Ethernet
Switch must have Gigabit ports and DHCP Server capability and additionally support
the IGMP communication protocol for the multipoint-to-multipoint case. MuxLab
recommends using the Cisco SG300 Series Managed Switches. The MuxLab ProDigital
Network Controller (500811) is available to simplify the configuration and utilization of
the 500755-AMP and other MuxLab IP based products via an Ethernet web interface.
Applications
Audio Distribution Systems

© MuxLab Inc. 2017
Installation
For the Receiver (RX), connect a pair of 8 ohms speakers. Connect the included power supply (the
RX is not PoE) before connecting it to the AC. For more information on how to configure the unit
and the Ethernet switch, check Muxlab’s website, the 500811 Operation Manual and the 500755-
AMP-TX Quick Installation Guide.
Caution: Do NOT connect (short) any output signal wires together or to the ground.
Do not block the ventilation holes.
Verify that the UTP cable to be used is Cat5e/6 or better for LAN use, and is not intended for
telephone equipment.
Do not attempt to open the housing. There are no user-serviceable parts inside the amplifier.
Opening the unit will void your warranty.
1. Use a Cat 5e/6 UTP cable between the Receiver and the 1Gig Ethernet Switch.
2. It is recommend to use the Receiver with speakers with impedance of 8 ohms and a rating of 50W
minimum. Higher impedance will work but less power will be available but a lower impedance can
overheat and damage the unit.
3. Use wires with at least 18 AWG (ideally from 12 to 18 AWG) to connect the speakers to the
Receiver amplifier binding posts. Any standard electrical wire with minimum gage is
acceptable but a larger gauge is better. Limit the distance to less than 15ft (5m).
4. Turn the Volume Preset screw (located on the front of the unit) to maximum.
5. Speaker connection: (top portion: for stereo, bottom portion: for mono)
6. If configuration is point-to-point: use the DIP Switches to select a unique Device ID (DIP
switch positions #1, #2 and #3) for each Transmitter present on the network and configure
each Receiver Device ID to the corresponding selected Transmitter. An Ethernet switch is not
required but may be used. Note that this step is not necessary if the MuxLab Network
Controller (500811) is used.
7. If the configuration is a point-to-multipoint or multipoint-to-multipoint:
You will need to use an Ethernet Switch with 1Gig ports and DHCP Server support. In
addition IGMP Protocol support is required for the multipoint-to-multipoint case. Verify that
the Ethernet Switch is configured correctly and that the DHCP Server is enabled and
that the IGMP Protocol is enabled for multipoint-to-multipoint applications. See the
support documentation on MuxLab’s website regarding how to configure an Ethernet.
8. Power ‘ON’ all units.
9. Power ‘ON’ the audio equipment and verify the sound quality.
An IR Emitter and Sensor is not included, but may be purchased separately. If purchased, IR
control signals may initiate from control software on a PC, tablet, or smartphone connected to
the network, so that only IR Emitters are required next to the audio equipment. You can
differentiate the IR Sensor and the IR Emitter by looking at the 3.5 mm plug. The IR Sensor
is using a Stereo Plug (3 Contacts) and the IR Emitter a mono plug (2 Contacts). Set the IR
direction (Dip switch position #5, set to ON=Emitter, or OFF=Sensor). The IR direction
setting is read each time the unit is powered ON, always set DIP switch position #5 while the
unit is OFF in order for the setting to take effect during power ON.
10. Position the IR Sensor so that it is directed at the hand-held remote control. For a clear IR
signal reception, aim the hand-held remote control at the top of the IR Sensor enclosure.
11. Position the IR Emitter as close as possible to the source’s IR Sensor. For a clear IR signal
reception, the IR Emitter can be glued on the source’s IR Sensor. The IR Emitter’s signal is
transmitted from the side of the enclosure.
12. This product supports RS232 bidirectional communication. The default settings are 9600, N,
8, 1. To send an RS232 packet to a specific device, you need to put the IP address in front of
the packet. This communication is meant to be machine to machine; and hexadecimal codes
must be used. For example, to send the message “Hello” to a device having an IP address of
192.168.168.55 IP, send the following hexadecimal string: 0xC0 0xA8 0xA8 0x37 0x48
0x65 0x6C 0x6C 0x6F. (or “192 168 168 55 H e l l o” in hexadecimal).
Troubleshooting
The following table describes possible symptoms, probable causes and solutions regarding the unit:
Symptom
Probable Cause
Possible Solutions
All LEDs off
No power
Check power supply.
Network LED blinking
Unit is OK
Link OK.
Network LED ON
Normal
No Link.
No audio
No continuity
Check continuity on each pair.
Volume off
Turn up the front volume screw.
Volume too loud
Turn down the front volume screw.
Check RX unit level.
No audio or freezing
audio
IP Address Conflict
Check DIP switch address.
IGMP not enabled or not
working properly
Check the Ethernet switch configuration and
enable the IGMP protocol.
Hum or Buzz
Defective audio cable or
equipment incorrectly
grounded.
Change cable or verify wiring interface.
Try grounding equipment on each side to
safety ground.
Sound chopped or cut
Unit is overheating
Place the unit in a ventilated area.
Wrong speaker impedance, or too low.
Software cannot detect
the 500755-AMP
Computer not on the same
subnet or wrong IP address
Set computer IP Address and mask.
If you still can’t diagnose the problem, please call MuxLab Customer Technical Support at
877-689-5228 (toll-free in North America) or ([phone] (International).