Knoll Systems UR-STEREO RECEIVER, UDS-STEREO SENDER, US-STEREO SENDER, UDR-STEREO RECEIVER User Manual

Stereo Balun Specifications:

Models and Dimensions:

UDR-Stereo (in-wall Decora™ version): 4.1"h x 1.4" w x 2.0"d.
UDS-Stereo (in-wall Decora™ version): 4.1"h x 1.4" w x 2.0"d.
UR-Stereo (black enclosure): 1.1"h x 2.6"w x 2.8"d (28 x 66 x 71 mm).
US-Stereo (black enclosure): 1.1"h x 2.6"w x 2.8"d (28 x 66 x 71 mm).

Input and Outputs:
Send Unit: two stereo input RCA jacks, one 3.5mm mono
infrared emitter jack, one RJ-45 out-jack, one-DC power input.
Receive Unit: Three RCA output jacks, one RJ-45 in-jack, one­DC power input.

Audio Input Impedance:
Receive Unit: 20k ohms, max 3 Vp-p.
Frequency Response: 10Hz-50kHz +/- 3 dB

Power:
Send Unit: 12 VDC unregulated (one PS1202 will power one
each send and receive).
Receive Unit: 12 VDC unregulated (one PS1202 will power one
each send and receive).

Infrared:
Send Unit: One stereo 3.5mm jack to connect one single or one dual
emitter.
Receive Unit: One triple 3.5 mm jack to connect a three wire Knoll or
other infrared receiver. Supplies 12 VDC power for infrared receiver
without requiring another power supply.

Warranty

Knoll Systems warrants balun products sold in the USA and Canada by
authorized Knoll dealers to be free of defects in materials and workmanship.
This warranty extends for three full years from the date of purchase by the
original consumer. Any products returned to Knoll Systems and found to be
defective by Knoll Systems within the warranty period will be repaired or
replaced at Knoll System’s option, at no charge. Knoll Systems will not be
responsible for the actual cost of installation or removal of the product, nor for
any incidental or consequential damages. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above
limitation may not apply to you. This warranty gives you specific legal rights.
You may have additional legal rights that vary from state to state.

Knoll Systems www.knollsystems.com

145 Tyee Drive Point Roberts, WA 98281
12140 Horseshoe Way, Richmond BC V7A 4V4
tel [phone], fax [phone]

Made in Canada Knoll Systems All Rights Reserved

UDR-Stereo Receiver
UDS-Stereo Sender
UR-Stereo Receiver
US-Stereo Sender

Installation Instructions v1.1

Warning: To be installed and/or used in accordance with

appropriate electrical codes and regulations. If you are not sure
about any part of these instructions, consult a qualified
electrician.

Caution: Do not install this product in an electrical junction box
with 110V or higher unless an approved barrier separates the
high and low voltage sections.

Introduction: Thank you for your purchase of a Knoll active
balun system. This system is specifically designed to send a
stereo line level and an infrared signal safely down a cat 5 or cat
5e wire up to 1000 feet without encountering noise problems.
Balun is an acronym for:

BALance – UNbalance

The send module takes a conventional stereo line level signal
and balances it (signal is not tied to a ground reference) then
sends it via cat 5 to the receive module (with power from the
send module). The receive module unbalances the stereo signal
back to its former state. This process does not allow any stray
magnetism of any sort to contaminate the signal while it is
being transported.

Features:

• Tabletop box design or Decora™ style available.

• Safely sends stereo signals up to 1000’ (300 m).

• Sends infrared signal from receiver back to sender.

• PS1202 power supply required on send side only.

• Mix and match tabletop and decora style.

Wiring: A send
module (UDS-Stereo
or US-Stereo) needs
to be connected to a
Knoll receive module
(UDR-Stereo or UR­Stereo) 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 UDS­Stereo 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.

IR55

Emitter

Infrared
receiver
input

CD Player

Emitter
output

Left

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

Infrared Receiver
3 wire type

need be, please call our tech line for details at 1
800 566 5579.

This product may contain lead that some states
have determined are harmful. Wash you hands
after touching this product.

PS1202

Send

Right

12 VDC

CAT 5

Receive

Decora™ is a trademark of Leviton

Stereo Receiver