Audioplex BALANCED AUDIO CONTROLLER Installation Manual

BALANCED AUDIO CONTROLLER INSTALLATION MANUAL
Front Panel ON/OFF Switch with LED power indicator.
Two mono inputs (A&B) and eight mono outputs (1-8), may be configured as one stereo in, four stereo out.
1/4" stereo phone jacks in and out; these accommodate balanced and unbalanced signals.
Channel A or Channel B may be directed to each output via the front panel switches.
Eight independent outputs with individual gain controls.
16 VAC UL rated Power Supply included.
One rack height- 17"W x 1.75"H x 4.5"D.
The BAC is used as a stereo line level source distributor to four different locations in stereo or as a mono line level source
distributor to eight different locations in mono. Some common examples of this would be to;
1. Split and buffer the output of a CD player to four different Receiver/Amplifiers.
2. Distribute line level signals long distances throughout a house or building. Doing this in balanced mode is the preferred method
for noise rejection.
3. Send a source balanced or unbalanced out to four locations with a mixture of input types; i.e. two amplifiers with XLR
balanced inputs and two amplifiers with RCA unbalanced inputs.
The BAC is a line level audio distribution controller. The input consists of A and B channels. Though each channel is mono in
nature, a stereo signal may be accommodated using both inputs. Each input may be configured as balanced or unbalanced at the flick of a
switch (rear panel). Therefore both inputs may be balanced, unbalanced, or split with one balanced and the other unbalanced.
There are eight output channels. For each of these outputs there is a gain control knob and input channel selector (A or B) on the
front panel. Each output may also be configured as balanced or unbalanced at the flick of a switch (rear panel).
When connecting different pieces of equipment, ground loops are always a possibility. This is particularly true when these pieces
of equipment are in different parts of a building or a house. The ground loop usually manifests itself as audio noise/hum or video picture
interference. The best way to locate the problem is to disconnect items one at a time until the problem goes away. In some instances the
difference in ground potentials is enough to lead to a shock. Care should be taken when dealing with one. To minimize the possibility of a
ground loop wire shields should be left disconnected at one end, however a ground wire must be connected between the equipment by a
single wire, the bigger the better. Leave all the shields disconnected at the BAC or at the sources and destinations. This pertains only to
signal cables. DO NOT LIFT THE BUILDING GROUND ON ANY PIECE OF EQUIPMENT SUPPLIED WITH ONE! DO NOT CUT
THE GROUND SPADE OFF OF THE ELECTRICAL CORD!...........You risk your own life and the lives of others.
On the following pages wiring diagrams for different types of connectors are provided. Notice the shields are left disconnected at
one end of the wire as stated above. In some cases, Baluns (balanced to unbalanced transformers) are required. Certain types of
connectors/adaptors may also be needed. Audioplex Technology(tm) sells many of these items should you need them.
TECHNOLOGY

SPECIFICATIONS

USES
Please see diagrams on following pages for reference
TM