Factor Electronics COMM-2 Owner's Manual - page 5
COMM-2 Cables & Connections:
1. The COMM-2 provides electronically balanced line level inputs and outputs.
Balanced inputs and outputs reject most of the common noise in audio systems when two
balanced devices are connected together. This allows long cable runs to be used without
introducing high level noise into the audio system. The COMM-2 can also be connected to
unbalanced audio systems however we recommend cable runs no longer than 25' when using
unbalanced connections. Balanced shielded cables can be run 100's of feet when the COMM-2 is
connected to another device with balanced inputs and outputs. All noise cannot be canceled out
using balanced connections however most of the noise will be inaudible when using high quality
shielded cable with balanced connections.
2. The COMM-2 includes 2 x shielded unbalanced 3.5mm male to male 6' cables and 2 x
balanced 3.5mm female input/output connectors wired as follows:
3. NOTE: using an unbalanced connection at one end of the cable and a balanced
connection at the other end of the cable will result in the entire connection being
unbalanced. To maintain a low-noise connection use a balanced connection at both ends of
the cable and connect the COMM-2 to other equipment with balanced inputs and outputs.
4. For standard IP camera installation where the COMM-2 is located within 6' of the IP camera,
use the 6' 3.5mm cables included with the COMM-2.
Standard IP camera installation where the COMM-2 will be located within 6' of the camera.
Tip +
Ring -
Sleeve shield/Ground
Balanced 3.5mm connection: Unbalanced 3.5mm connection:
Tip +
Sleeve shield/Ground
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5
6' 3.5mm to audio input
6' 3.5mm to audio output