Crown Audio PCC-170SW specifications Features, Membrane Switch, Specifications, Finish Black

POLAR

PATTERN

PHASE COHERENT

CARDIOID® MICROPHONE

PCC®-170SW

The Crown® PCC®-170SW is a surface- mounted supercardioid microphone of professional quality. This handsomely styled unit is appropriate for use on the most elegant boardroom table or lectern. Other ap- plications include churches, courtrooms and

council chambers.

Features
Perfect for multimiking applications in telecon-	Half-supercardioid polar pattern reduces
ferencing, distance learning, and boardrooms	ambient noise and room reverberation
Phase Coherent Cardioid® design prevents	Programmable on/off membrane switch
coloration from surface sound reflections	Balanced XLR output

The PCC-170SW has a silent-operating mem- brane switch which is normally off. The switch can be configured for touch on/off, momentary on or momentary off operation. This configura- tion is set by a bottom-mounted DIP switch. A high-intensity LED lights when the unit is on.

The PCC-170SW is intended for multiple- microphone use on a conference table where each person wants control of his or her micro- phone.

The microphone attenuates 70 dB when the switch is in the off position. Since the micro- phone capsule is placed on a boundary or surface, direct and reflected sounds arrive at the diaphragm in-phase, resulting in a wide, smooth frequency response free of phase inter- ference. Clarity and reach are also enhanced.

Self-contained electronics eliminate the need for an in-line preamp. Powered by 12-48V phantom power, the PCC-170SW has a low-impedance balanced output which permits long cable runs without hum pickup or high-frequency loss. Although the standard connector option is a Switchcraft TB3M, the microphone can be spe- cial-ordered with a ¼-inch (6.35-mm) stereo phone plug on the bottom of the base plate as the PCC-170SWSPP.

RFI suppression is included. Self-noise is low and sensitivity is very high. A bass-tilt switch allows the user to tailor the low-end response for particular applications.

Membrane Switch

The PCC-170SW membrane switch can be con- figured to work three ways:

1.Touch on/off. Touch the switch to turn on the mic; touch it again to turn off the mic.

2.Momentary on. Touch and hold the switch to turn on the mic momentarily. Release the switch to turn the mic back off.

3.Momentary off. Touch and hold the switch to turn off the mic momentarily. Release the switch to turn the mic back on. This option can serve as a cough or privacy button.

After choosing the option you prefer, set the DIP switches according to the label on the bottom of the microphone (see Fig. 5). The LED in the mi- crophone housing will light when the mic is on.

Specifications

Type: Phase Coherent Cardioid®.

Element: Electret condenser.

Frequency response (typical): 50 Hz to 20,000 Hz at 30 degrees incidence to surface (see Fig. 1).

Polar pattern: Half-supercardioid (supercardioid in the hemisphere above the primary boundary). See Figs. 2 and 3.

Impedance: 150 ohms, balanced (recommended load impedance 1000 ohms or greater).

Open circuit sensitivity (typical): 22 mV/Pa* (–33 dB

re 1 volt/Pa).

Power sensitivity: –30.5 dB re 1 mW/Pa*. EIA rating

–125 dBm.

Equivalent noise level (self-noise): 22 dB SPL typi- cal (0 dB = 0.0002 dyne/cm2), A-weighted.

S/N ratio: 72 dB at 94 dB SPL.

Maximum SPL: 120 dB SPL produces 3% THD.

Off Attenuation: 70 dB at 1 kHz.

Turn-on time: 250 msec.

Turn-off time: 125 msec.

Polarity: Positive pressure on the diaphragm produces positive voltage on pin 2 with respect to pin 3.

Operating voltage: Phantom power, 12 to 48 volts DC on pins 2 and 3 with respect to pin 1.

Current drain: 6 mA nominal.

Connector: Switchcraft TB3M in model PCC-170SW. Bottom-mounted ¼-inch (6.35-mm) stereo phone plug in model PCC-170SWSPP. See Fig. 7.

Cable: 15-foot, black, two-conductor shielded cable with Switchcraft TA3F and A3M connectors. No cable supplied with SPP option.

Materials: High-impact molded plastic and steel mesh grille.

Finish: Black.

Net weight: 6 oz. (170 g).

Dimensions: See Figs. 4 and 7.

Optional accessories: Crown PH-1A phantom power supply (single channel, battery or AC adapter powered).

*1 pascal = 10 dynes/cm2 = 10 microbars = 94 dB SPL.

Fig. 1

Frequency Response

Frequency in Hz

Fig. 2

Horizontal-Plane Polar Response

Fig. 3

Vertical-Plane Polar Response