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Com-Tech Power Amplifiers
Reference Manual
8.2 R.S.V.P. Module
R.S.V.P. The R.S.V.P.
(
Remote Switching Voltage Provider)
can be used in applications requiring remote power turn on/
off of banks of amplifiers. Each R.S.V.P. can control up to 20
CT-10 Series amplifiers and/or daisy chain to other R.S.V.P.
modules, allowing larger systems to be controlled. The
R.S.V.P. can also be controlled by the IQ-PIP AUX output.
P.I.P.-RPA
A phantom-power mixer that has four balanced
mic or line inputs with voiceover capability and adjustable
“duck” level, 84 dB of attenuation. A 10-volt DC source for
remote control capability is provided. The P.I.P.-EXT (Part
M44731-4), available from service, allows the P.I.P.-RPA and
other PIP cards to be “extended” outside the amplifier for
easy set up.
P.I.P.-RPAT
has the same features as the P.I.P.-RPA but in-
cludes four input transformers.
P.I.P.-XOV is a versatile, economical mono 12- or 18-dB/
octave crossover/filter which offers bi-amping and tri-amping
capability.
8.3 Com-Tech 210 Cooling Fan
A cooling fan (part GCT200FAN) is available for North
American Com-Tech 210s (all other units include a fan).
We recommend the kit if you will be operating a Com-
Tech 210 at high levels, in high temperatures for long
periods, or with high duty cycle input signal, (see Sec-
tion 3.2.1). Contact an authorized Crown servicer for
installation of the optional fan kit.
8.4 Constant Voltage Computer
Crown’s constant voltage computer is a easy-to-use
slide rule for audio applications. The first scale finds the
impedance of a step-down transformer based on deliv-
ered power and the transformer’s rated voltage. This
scale also identifies the proper transformer tap to use
when a particular constant voltage rating is not provided
with the transformer (such as 25, 35, 50, 70, 100 or 140
volts). Other scales include line loss, parallel resistance,
dB-SPL vs. distance and dB-SPL vs. power. To obtain a
constant voltage computer, call our Technical Support
Group and ask for literature.
P.I.P.-PA
permits the unique capability of adding one mic/
line input directly to each channel of an amplifier. With phan-
tom power for microphones, this mic/line input may be re-
motely switched from mic to line priorities.
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