Crown RPA-RMT Installation Manual

Installation Guide
Introduction
The RPA-RMT is a two-channel, wall-
mount remote volume control for use
with the P.I.P.-RPA. It was designed
to offer an attractive, inexpensive
method for controlling audio levels in
a system that uses Crown amplifiers
fitted with P.I.P.-RPA modules. The
P.I.P.-RPA has four remote control
inputs, so two RPA-RMTs are used to
control the four channels.
Resistors
Installations often require control over
the volume range of the system. To
RPA-RMT
limit the system's maximum output,
simply turn down volume controls on
the PIP™ or the amplifier. To control
minimum output, you will need to
install resistors in the sockets located
on the back of the RPA-RMT.
One resistor socket in a parallel cir-
cuit is provided for each potentiom-
eter. When the potentiometer pulls
the output voltage below the resistor
value, the resistor allows current to
pass which will control the minimum
output for that channel.
Fig. 1 RPA-RMT: Rear View
The resistor that you install deter-
mines how much attenuation is avail-
able. With no resistor installed, the
RPA-RMT will provide full attenua-
tion. Thirty-two resistors with eight
different values are included with
each pair of RPA-RMTs. These eight
resistor values range from 390 to
2.7 K ohms and will satisfy most ap-
plications. Figure 2 shows the corre-
sponding maximum attenuation for
several resistor values.
Once you know the attenuation re-
quirements for your system, use Fig-
ure 2 to determine which resistors
are needed. An equation is provided
in the P.I.P.-RPA Reference Manual
to calculate other resistor values.
Fig. 2 Remote Control
Resistance/Voltage