Protech Audio 861A - Manual

MODELS COVERED
The Integra III System 10 Watt Audio Power
Amplifier Cards are designed for use in continuous
duty professional applications.
All 6 units are designed to drive 4 or 8 ohm loads to
a maximum of 10 watts RMS. Each model incorpo-
rates a combination of features that will allow the
unit to deliver maximum performance and reliabil-
ity. Each circuit is designed with a minimum of
components, to reduce the possibility of failure,
while still maintaining performance and feature
criteria. Only the highest quality components are
used in the construction of these audio power
amplifiers. These units are designed to be used in
systems that operate 24 hours a day, 7 days a
week.
Typical applications are legilsative venues,
boardrooms, council chambers, judicial systems,
sales presentation rooms, headphone listening sys-
tems, public address systems, multi-room audio
systems, and recording systems. The actual
application of the amplifiers is found in buildings
such as public buildings, courthouses, legisla-
tive or council buildings, convention centers,
factories, libraries, hotels, racetracks, training
systems, corporate boardrooms, etc.,. The Model 861A has a bridging, unbalanced
input. The gain trimpot is mounted on the rear of
the card frame. This rear mounting location
serves two purposes. The rear mounted trimpots
prevent tampering with the gain settings, and, if
a spare unit should be put into service, no re-
alignment of the gain setting is necessary. Both
desirable features when semi-technical person-
nel may be called upon to maintain the system.
The model 883A has a balanced, transformer-
isolated bridging type input.
The model 884A has a 600 ohm transformer
isolated input.
All three models offer a mute function, that is
activated by grounding the mute control pin.
The specifictions on all 3 units make them ideal
for high quality audio systems. And the card file
format allows up to 10 amplifier circuits to be
mounted in just 3.5" of vertical rack space.
These products are designed to provide the user
with high quality audio, for years of uninter-
rupted service.
INTEGRA III SYSTEM
10 Watt Audio Power Amplifier Cards
INSTALLATION & OPERATION MANUAL
861A
883A
884A
Protech Audio Corp., 192 Cedar River Road, Indian Lake, New York 12842 Voice 518-648-6410 Fax 518-648-6395
INTEGRA III SYSTEM
www. protechaudio .com
PROTECH
®
12/03
Model 883A Shown