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Versatile PIP (Programmable Input Processor) 
modules provide flexible expansion features 
that can be added to customize the amplifier. 
PIP modules plug into the connector inside the 
back panel of the amplifier. 

PIP modules are available with a features rang-
ing from error-driven compressor/limiters to IQ 
control. Visit the Crown website at 
www.crownaudio.com, or contact Crown Tech-
nical Support, for descriptions of available PIP 
modules.

The IQ-PIP-USP2 Adapter allows the amplifier 
to accept the Crown IQ-PIP-USP2 module, 
which offers remote control and monitoring via 
Crown’s Smart Amp™ IQ features set, plus a 
wide range of digital signal processing capabil-
ities

Features:

•

24-bit, 48-kHz sampling rate for analog to 

digital conversion.

•

Programmable DSP filters.

•

Greater than one-half second of signal 

delay for each channel.

•

Input Signal Compressor/Limiter, Ther-

mal Limiter and Clip Eliminator for each 
channel.

•

Presets for easy recall of settings.

•

Auto-Standby for reduced energy costs.

•

Error reporting.

•

Logic input and output.

•

Listen Bus allow easy connection to an 

audio monitoring system.

The Input Sensitivity Switch is located inside 
the PIP compartment at the back of the ampli-
fier (Figure 4.1). It is set at the factory to 0.775 
volt for rated output into 8 ohms. It can also be 
switched to a sensitivity of 1.4 volts, or a fixed 
voltage gain of 26 dB (4.8 volts for rated out-
put). At 26 dB voltage gain, the equivalent input 
sensitivity is:
Macro-Tech 24X6: 3.1V for Channel 1, and 
2.2V for Channel 2. 
Macro-Tech 36X12: 4.8V for Channel 1, and 
2.6V for Channel  2.

How to change the input sensitivity:

1. Turn off the amplifier and disconnect its 

power cord from the AC mains power recep-
tacle.

2. Remove the PIP module (two screws).

3. Locate the sensitivity switch access hole 

inside the chassis opening as shown in Fig-
ure 4.1. It is located just above the phone 
jack inputs.

4. Set the switch to the desired position noted 

on the access hole label. The position toward 
the front panel sets the sensitivity to 1.4 

volts for rated output, the middle position 
provides a voltage gain of 26 dB, and the 
position toward the back panel sets the sen-
sitivity to 0.775 volt for rated output.

5. Replace the PIP module and restore the 

power.

The Input Ground Lift switch is located on the 
rear panel (Figure 4.1) and can provide isola-
tion between the input signal ground and the 
AC ground. It affects only the phone jack inputs 
and has no effect on the input connectors on 
the PIP module. Sliding the switch to the left 
isolates or “lifts” the grounds by placing an 
impedance between the sleeve of each phone 
jack and the circuit ground.

When a PIP module is plugged into the ampli-
fier, only the noninverted and inverted signal 
lines are connected in parallel with the corre-
sponding lines of the input phone jacks. The 
signal grounds are not paralleled. For example, 
XLR pins 2 and 3 are connected in parallel with 
the tip and ring of the corresponding phone 
jack. However pin 1 of the  XLR is not con-
nected in parallel with the sleeve of the phone 
jack.