Protech Audio 704-IN - Manual

PROTECH
MODELS COVERED
INTEGRA III SYSTEM
Modular Matrix Mixer
INSTALLATION & OPERATION MANUAL
®
704-IN
704-OP
3/02
www . protechaudio . com
The Models 704-IN and 704-OP Modular Matrix
Mixers are designed to provide low cost, incremen-
tal matrix mixing of audio signals in professional,
fixed installations.
Inputs can be added, in increments of 6, up to a
maximum of 24 (Model 704-IN). Outputs can be
added, in increments of 6, up to a maximum of
36 (Model 704-OP).
The design of the Model 704 is elegantly simple.
Input circuits buffer the incoming signal, and pass
the signal thru to a series of summing amplifiers.
Each input may be assigned, via on-board DIP
switches, to any or all summing amplifiers. Each
summing amplifier will accept up to 24 separate,
line level signals.
Matrixes, from as small as 6 x 6, all the way up
to 24 x 36, may be created. Other switching cards
in the INTEGRA III SYSTEM, for example the
Model 703-4 Remote Push-Button Program Selector
and Volume Control, may be used to remotely select
between custom matrix outputs.
Inputs may be used in balanced or unbalanced
configuration. Outputs may be used in balanced or
unbalanced configuration. Selection of balanced or unbalanced operation of outputs, is made via push-
on jumpers.
A 26 pin ribbon cable straps input and output cards
together, on the front edge, to complete the matrix
assembly.
Each module is individually fused, with auto-reset-
ting electronic fuses. In the event of a component
failure, the module will remove itself from the power
supply bus, allowing the remainder of the system
to continue operating
As one of the INTEGRA III SYSTEM cards,
the Model 704 Modular Matrix Mixer cards may
be mounted in any of the system enclosures
manufactured by Protech Audio. The Model 858B
Card Frame allows mounting of up to 9 cards
in just 3.5" of vertical rack space. The Model
857B Card Frame allows mounting of 10 cards in
the same rack space, and requires an external
power supply (Model 66708). The Model 704
Modular Matrix Mixers may be mixed and
matched with other INTEGRA III SYSTEM cards
within the same card frame.
For additional information contact:
APPLICATIONS ASSISTANCE
Protech Audio Corporation, PO Box 597, 192 Cedar River Road, Indian Lake, New York, 12842, Voice 518-648-6410 Fax 518-648-6395