Specifications:
Polar pattern:
supercardioid
Frequency range:
50 to 18,000 Hz
Impedance:
150 ohms
Sensitivity:
22mV/Pa (-30dBV)
Equivalent noise level:
22 dB-A
Maximum SPL:
120 dB
Cable:
4,6 m (15ft.)
Finish:
black
Net weight:
170 g (6 oz.)
Item number:
PCC-170 6000H50110
Boundary Layer Microphones
Operating Instructions
Unbalanced operation: If you are using a phantom power supply that does NOT include an
isolation transformer, and you desire an unbalanced output, use pin 2 as hot and pin 1 as
ground. This procedure prevents distortion in the PCC
®
circuit. Do not unbalance the output
of the supply by connecting pin 3 to pin 1. If you are using a phantom supply containing an
iso-lation transformer (such as the Crown PH-1A AC/Battery Supply), then you can unbalance
the output by connecting pin 3 to pin 1 in the cable feeding the mixer. This results in 6 dB
more sensitivity. The PCC
®
includes two keyhole slots in its base to accept mounting screws.
Note: The porous foam liner in the housing must go toward the front of the microphone; the
dense foam liner goes toward the rear. Otherwise the frequency response and polar pattern
will be degraded.
Placement suggestions for the PCC
®
-160 are in the Crown
®
Boundary Microphone
Applications Guide and Speech Sound Reinforcement Application Guide, available online at
http://www.crownaudio. com/mic_web/mic-library.htm.
BASS TILT SWITCH: On the bottom of the micro-phone is a bass-tilt switch which allows the
user to tailor the low-end response for particular applications. In general, use the FLAT
position. Use the CUT position to reduce room rumble and air-handler noise. Use the BOOST
position to compensate for low-frequency losses when the PCC
®
is placed on small
boundaries such as lectern shelf-tops.
Architects’ & Engineers’ Specifications
The microphone shall be the PCC
®
-160 or equivalent.
The microphone shall be a half-supercardioid electret condenser type, utilizing a subminiature
transducer of rugged construction. A smooth frequency response from 50 Hz to 18,000 Hz shall
be obtained, with a uniform off-axis response, over 20 dB down at the rear nulls. The microphone
will exhibit excellent off-axis response and gain-before-feedback.
The microphone shall employ the principle of phase coherency achieved by mounting a small-
diameter element very near a boundary, thus eliminating comb filtering in the audible spectrum. A
15-foot (4.6-m), two-conductor shielded cable with TA3F and A3M connectors shall be supplied
with the microphone. The microphone shall have a sensitivity of 22 mV/Pa. The microphone shall
accept a 120 dB SPL input while providing no greater than 3 percent THD (open-circuit
termination). Equivalent noise shall be 22 dBA typical.
The Crown Model PCC
®
-160 is specified.