MuxLab 500755-AMP-TX User manual

© MuxLab Inc. 94-000844-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.
Input Level
-10 dBu for line level RCA and 3.5mm connectors,
-50 to -10 dBu for microphone,
Microphone: Ceramic, Dynamic, Electret with combined or separate bias.
Bias: 6V (for consumer Electret).
Frequency response
20 –20,000 Hz (+/- 1 dB)
LCD Display
2 line x 20 character backlit LCD display
Control
Local control from front push/turn knob and LCD display, and remote control via web
interface and 500811 controller. Supports a recessed front soft reset button.
Front Display
LCD DISPLAY 2 x 20 character
2 LEDs: IP status and Power
Connectors
Two (2) RCA receptacles for L+R source input.
One (1) 3.5mm stereo audio jack for source input.
One (1) 3.5mm IR for IR Sensor or IR Emitter (port is directional).
One (1) RJ45 connector for Ethernet connection to a 1Gig Ethernet Switch.
One (1) locking power coaxial jack, 2.0x5mm.
One (1) three pin terminal block connector for Mic In.
One (1) male DB9 for RS232.
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 requirement
3W via PoE or external 5V, 1A adapter (PS not included).
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 4.76” x 1.97” (11 x 12.1 x 5 cm)
Weight
1.20 lb. (0.55 kg)
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, 500755-AMP-RX, 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
500993 Univ. Locking Power Supply 5VDC/2.6A US/UK/EU Blade
500994 IR Sensor
500998 IR Emitter
Audio/AMP over IP Transmitter, with Mic
500755-AMP-TX
Quick Installation Guide
Overview
The AUDIO/AMP over IP Transmitter, with Mic 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 and/or
Receivers to the same local Ethernet network. The Transmitter supports PoE (PD) if used
with a PoE (PSE) Ethernet Switch. 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.
Main Application
Audio Distribution Systems

© MuxLab Inc. 2017
Installation
For the source (TX), connect one or two line level audio sources and/or a microphone. 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-RX Quick Installation Guide.
Note: Do not block the ventilation holes. 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 Cat5/5e/6 cable between the unit and the 1Gig Ethernet Switch.
2. Connect microphone as show below. Use the removable connector supplied with the unit.
3. If the 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. A 1Gig Ethernet Switch
is not required but may be used. Note that this step is not necessary if the MuxLab Network
Controller (500811) is used. Also if point-to-point is created without a network (TX to RX
direct connect), then the TX and RX should have the same address, but any setting is OK.
4. 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 Switch.
Connect all Transmitters and Receivers to the Ethernet Switch.
5. 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).
6. 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.
7. 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.
8. This product supports RS232 bidirectional communication. On the Transmitter, the RS232
port is configured as a DCE; and on the Receiver as a DTE. Please connect your RS232 cable
accordingly. The default settings are 9600, N, 8, 1.
9. 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).
10. Powering the Transmitter via an external power supply is only necessary where a PoE
Ethernet Switch is unavailable. In this case, connect a 5 VDC power supply to the unit.
Basic Operation
1. Navigating the menu to configure unit settings (via the push/turn dial):
a. To navigate the menu: When in menu mode, turn the dial to cycle through the menu.
b. To select a menu item: Push the dial when the desired menu is displayed.
c. To select a setting within a menu: Turn the dial and push to select desired setting. If the
setting is not selected before the timeout occurs, the unit returns to menu mode without
the setting change. This timeout affects all menus except the VOL (0-87) menu.
2. Menus & Settings:
a. VOL (0-87): Set main volume level [0 to 87]
b. INPUT: Select audio source [IN #1, IN #2, MIC, IN #1 + MIC, IN #2 + MIC]
c. LOW VOL: Set IN #1/IN #2 attenuation when MIC DETECT is active [-20 to 0dB]
d. BASS: Set IN #1/IN#2 bass level [-14 to +14dB]
e. TREBLE: Set IN #1/IN#2 treble level [-14 to +14dB]
f. MIC TYPE: Set type of Mic used [ELECTRET, DYNAMIC, CERAMIC]
g. MIC GAIN: Set Mic gain when MIC DETECT is active [0 to +26dB]
h. MIC BASS: Set Mic bass level [-14 to +14dB]
i. MIC TREBLE: Set Mic treble level [-14 to +14dB]
j. MIC DETECT: Set Mic detection sensitivity [0 to 63, where 0 = OFF]
k. LIGHT: Set backlight mode [AUTOMATIC, ALWAYS ON, ALWAYS OFF]
l. FACTORY RESET: Reset the unit to factory defaults, which are [VOL=0, INPUT=IN
#1, LOW VOL=0, BASS=0, TREBLE=0, MIC TYPE=ELECTRET, MIC GAIN=0,
MIC BASE=0, MIC TREBLE=0, MIC DETECT=0, LIGHT=AUTOMATIC]
m. SAVE: Saves the current settings, which are load on power-up
Troubleshooting
The following table describes possible symptoms, probable causes and solutions regarding the unit:
Symptom
Probable Cause
Possible Solutions
All LEDs off or no power
Bad UTP cable or Switch
not PoE
Try a new UTP cable and/or use an external
power supply.
Network LED On or Off
Unit defective
Try another unit.
Network LED blinking
Unit is OK
No audio or freezing
audio
Volume low
Check input level on display, and turn the
volume up. Check speaker type and
connections.
Equipment off
Check the audio source equipment.
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
connected or grounded.
Change cable, or verify wiring interface.
Try grounding equipment on each side to a
safety ground.
Software cannot detect
the 500755-AMP
Computer not on the same
subnet or wrong IP Address
Verify the network IP Address & 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).