Crown Audio PZM-185 operating instructions Pzm, Features, Specifications, Operating Instructions

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PZM -185

he Crown® PZM®-185 Pressure Zone TMicrophone® is a microphone designed for general-purpose use. Ideal for applications such as conferences, group discussions, inter- views, broadcast, home video production, lectures, and recordings. The mic can be placed on a large

surface such as a table, floor, wall, or lectern.

The PZM-185 is powered either by an internal

AAA1.5V battery or 12-48V phantom power. The boundary “paddle” can be detached so the mic will fit in your pocket. Attached to the mic is an 8-foot (2.438-m) cable leading to a tubular power module.

The microphone’s low-profile design reduces “mic fright” and minimizes clutter. It is nearly invisible on camera. The PZM-185 minimizes pickup of vibration and handling noise.

Its electret condenser capsule provides a wide, smooth frequency response from 50 Hz to 16 kHz. The mic’s hemispherical polar pattern allows clear pickup of everyone surrounding the microphone.

The PZM-185 is protected against static and RFI. The output is balanced, low impedance, which allows long cable runs without hum pickup or high-frequency loss.

Like other Pressure Zone Microphones, the PZM- 185usesaminiaturemiccapsulemountedverynear asound-reflectingplateorboundaryinthePressure Zone. In this zone, direct sound from the sound source combines in phase at all frequencies with reflected sound off the boundary. The benefits are many: 6 dB more sensitivity, 6 dB less noise, a wide smooth frequency response free of phase interfer-

Features

Ideal for table-top or on-floor recordings: conference, group discus- sions, interviews, broadcast, home video, lectures, music

Works on internal AAA battery or phantom power

Specifications

Element: Electret condenser.

Frequency response (typical): 50 Hz to 16 kHz (Fig. 1).

Polar pattern: Hemispherical (half-omni) on a large surface.

Impedance: 150 ohms, balanced. Recommended mini- mum load impedance 1000 ohms.

Open circuit sensitivity (1.5V battery power):

0.8mV/Pa (–62 dB re 1 volt/Pa*).

Power sensitivity (1.5V battery power): –59.5 dBm. EIA sensitivity –154 dBm.

Open-circuit sensitivity (phantom power):

3.2 mV/Pa* (–50 dB re 1V/Pa).

Power sensitivity (phantom power): –47.5 dBm.

EIA sensitivity –142 dBm.

Equivalent noise level (self-noise): 21 dB SPLtypical, A-weighted (0 dB = .0002 dyne/cm2).

S/N ratio: 73 dB at 94 dB SPL.

Maximum SPL: 120 dB SPL produces 3% distortion with phantom power.

Polarity: Positive pressure on the diaphragm produces

Low-impedance XLR-type output Boundary “paddle” can be detached

Clear, bright sound quality with excellent bass

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

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

Fig. 1

Frequency Response

ence, excellent clarity and “reach,” and consistent pickup anywhere around the microphone.

Operating Instructions

You can power the PZM-185 either by 12-48V

positive voltage on pin 2 with respect to pin 3 of the output connector.

Cable: 8-foot (2.438-m), 2-conductor shielded, perma- nently attached cable. No other cable supplied; use 2-conductor shielded mic cable.

Fig. 2

Frequency in Hz

Dimensions

phantom power or battery power. To use phantom power, plug the mic connector into a phantom power supply or into a mic input that provides 12-48V phantom power.

To use battery power, open the cover (Fig. 3) and insert a AAA 1.5V battery. Please note the correct orientation of the battery.

If you’re using the microphone on a hard surface, such as a table top, the boundary “paddle” is not necessary. If you’re using the mic on a carpet or other sound-absorbing surface, attach the bound- ary “paddle” for best results.

Output connector: 3-pin XLR-type pro audio connector.

Operating voltage: One 1.5V size AAA alkaline battery (Duracell MN2400 or equivalent) or 12 to 48V phantom power (positive voltage on pins 2 and 3 with respect to pin 1).

Battery life: Approximately 45 days.

Current drain: 0.5 mA.

Materials: High-impact plastic housing and steel power

module.

Finish: Satin black.

Dimensions: Fig. 2.

Weight: 4 ounces (115 grams).

Included accessories: 1.5V AAA battery.

3.409 in. (8.7 cm)

3.129 in. (7.9 cm)