Knoll UDR Installation Instructions Download Page 2

Wiring:

 A send 

module (UDS-Stereo 
or US-Stereo) needs 

to be connected to a 

Knoll receive module 
(UDR-Stereo or UR-

Stereo) to work 

correctly. The send 
and receive module 

are connected using a single cat 5 wire using all 8 conductors. 

Connection is made with the RJ45 connector (RJ45 plug not supplied). 

Always use standard cat 5 wiring practices. Using the correct wire pairs 
and polarity is 

VERY

 important. 

 

Connection to stereo source equipment

: Connect the two UDS-

Stereo or US-Stereo to gold RCA jacks with a good quality gold 

connector RCA jumper cable to the appropriate 

stereo output

 jacks on 

your receiver, tuner, CD player, switcher or other equipment.  
If there is a switched power outlet on your output equipment, you may 

want to plug the PS1202 power supply to the switched outlet.  

 

      Make sure a good quality RJ45 8-8 crimper is used

 to  

      connect the RJ45 connector to the cat 5 wire. Poor crimping 

      and mismatched wires are the most frequent cause of  

      installation problems. 
 

 

Power requirements: 

The Knoll balun system requires a single 

PS1202 power supply connected to the send unit only. In certain cases 

with very long leads a higher voltage PS1506 15 VDC power supply 

may be required if some noise or distortion is evident.   

 

Connection to the amplifier, TV or other components:

 Connect 

the two gold RCA jacks on the UDR-Stereo or UR-Stereo with a good 
quality gold connector RCA jumper cable to the appropriate 

stereo 

input

 jacks on your amplifier, receiver, TV or other component. Make 

sure the correct stereo input is selected.  
 

Multiple Connection(s):

 If the stereo signal needs to be sent to more 

than one receiver, this can easily be accomplished by paralleling or Y 
cording the inputs to the stereo send unit. Depending on the source 

components output, it should be acceptable to Y cord up to ten send 

baluns. Each Knoll stereo send balun is connected to one stereo receive 

balun. Each stereo send unit requires a PS1202 power supply.  
 

There is no balun hub available for the stereo balun system. 

 

Infrared:

 The Knoll stereo balun system can carry infrared signals 

from the receive unit to the send unit. To do this a three wire infrared 

receiver (not supplied) is connected to the triple connection 3.5mm 
stereo jack on the receive unit. The receive unit supplies 12 VDC power 

for the receiver, so a separate infrared power supply is not required. 

An IR54 or IR55 connection module is connected using the ground and 

IR output terminals on the IR54 or IR55 and a mono 3.5mm jack 
connected to the send module. The tip is the IR output. Infrared 

emitters are then connected to the IR54 or IR55. 

If an emitter is 

directly connected to the send unit without a connection block

a 470 ohm dropping resistor needs to be inserted in series in the 

emitter wire or the emitter will fail after a short period of time. Any 

infrared commands sent from the receiver on the Knoll stereo receive 
balun end is sent to the infrared emitter on the Knoll stereo balun send 

side and rebroadcast there. 

 

The Knoll send receive system does not have any 
user adjustments and is completely automatic. If 

need be, please call our tech line for details at 1 

800 566 5579. 

CAT 5

CD Player

PS1202

Send

Receive

Left

Emitter

output

Right

12 VDC

Stereo Receiver

Infrared

receiver

input

Infrared Receiver

  3 wire type

Emitter

IR55

 

This product may contain lead that some states 

have determined are harmful. Wash you hands 
after touching this product.  

Decora™ is a trademark of Leviton

 

 

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