background image

Specifications 

Environment 

Unbalanced line-level analog audio. 

Devices 

DVD players, audio receivers, audio amplifiers and audio 
mixers, audio matrix switchers and other unbalanced line-level 
audio equipment. 

Transmission 

Transparent to the user. 

Bandwidth (3dB 
roll-off point) 
(400 O source & 50 
kO receiver) 

Up to 1,000 ft (305m): 60Hz - 20 kHz           
1,000 ft (305m) to 5,000 ft (1.5 km): 100Hz - 20 kHz 

Maximum Input 
Level 

1.1Vp-p (+20 dBu, unbalanced < 1% THD) 

Insertion Loss per 
Balun Pair 

Less than  1 dB  per pair over the frequency range  

Common Mode 
Rejection (CMMR) 

Greater than 60 dB @ 1 kHz  

Audio Source 
Impedance  

100 to 600 O 

Audio Receiver 
Impedance  

10 kO to 100 kO 

Impedance 
Transformation 
Ratio 

Single unit:  4:1 (source:line) 

Cable – UTP  
 

24 gauge or lower solid copper twisted pair wire impedance: 
100 ohms at 1 MHz. Maximum capacitance: 20 pf/foot. 
Attenuation: 6.6 dB/1000 ft at 1 MHz 

Cable - Coax 

75-ohm coaxial cable 

Connectors  

Four (4) RCA-receptacle for audio.      One (1) RJ45 jack 

Pin Configuration 

Audio 1: Pins 7 (R) & 8 (T)               Audio 2. Pins 3 (R) & 6 
(T) 
Audio 3: Pins 4 (R) & 5 (T)               Audio 4: Pins 1 (R) & 2 
(T) 

Impedance  

Video: 75 ohms (RCA) unbalanced.  

Temperature  

Operating: 0 to 55 C.  Storage:-20  to 85 C. Humidity: up to 
95% 

Enclosure  

Fire retardant plastic 

Dimensions 

2.40” x 2.25” x 1.00” (6.1 x 5.7 x 2.54 cm) 

Warranty 

Lifetime 

Order Information 

IC565A          Quad Audio Balun 

 

 

 
 
94-000386-A   

 

 

 

 

 

SE-000417-A 

 

 
 

Quad Audio Balun (IC565A) 

Installation Guide 

 

Introduction 

The Quad Audio Balun allows up to four (4) analog line audio signals to be transmitted 
via unshielded twisted pair (UTP) cable in a point-to-point connection.  Used in pairs, 
the Quad Audio Balun eliminates up to four (4) coaxial cables, allowing audio-video 
equipment to be connected via space-efficient and cost-effective Category 5 twisted pair 
cable.   The Quad Audio Balun also works in conjunction with other Black Box analog 
audio baluns such as the IC460A.

 

 

Installation 

 

One (1) pair of baluns support  four (4) mono unbalanced analog audio channels or two (2) 
stereo audio channels via Cat5 twisted pair.  To install the baluns, perform the following 
steps: 

1.

 

Identify the pin configuration of the baluns.   Four (4) twisted pairs are required 
if all four (4) signals are transmitted.   The pin configuration follows the 
EIA/TIA 568A/B standard.  The Quad Audio Balun is reverse polarity 
sensitive.  Please ensure that wiring is straight-through (Ring to Ring, Tip to 
Tip).   

 

 

2.

 

At the audio source end, connect a Quad Audio Balun to the audio output using 
the appropriate number of RCA cables.   

3.

 

At the audio receiver end, connect a Quad Audio Balun to the audio input using 
the appropriate number of RCA cables. 

Отзывы: