Crown Audio Microphone PZM 185 User Manual

POLAR  
PATTERN  
PRESSURE ZONE  
MICROPHONE  
PZM®-185  
he Crown® PZM®-185 Pressure Zone  
Microphone® is a microphone designed for  
general-purpose use. Ideal for applications  
T
such as conferences, group discussions, inter-  
views,broadcast,homevideoproduction,lectures,  
and recordings. The mic can be placed on a large  
surface such as a table, floor, wall, or lectern.  
Features  
Low-impedance XLR-type output  
Boundary “paddle” can be detached  
Clear, bright sound quality with excellent  
bass  
Ideal for table-top or on-floor  
recordings: conference, group discus-  
sions, interviews, broadcast, home video,  
lectures, music  
The PZM-185 is powered either by an internal  
AAA 1.5V 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.  
Works on internal AAA battery or phantom  
power  
Themicrophone’slow-profiledesignreducesmic  
fright” and minimizes clutter. It is nearly invisible  
on camera. The PZM-185 minimizes pickup of  
vibration and handling noise.  
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.  
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.  
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.  
Fig. 1  
Frequency Response  
+15  
+10  
+5  
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: 6dBmoresensitivity,6dBlessnoise,awide  
smooth frequency response free of phase interfer-  
ence, excellent clarity and “reach,” and consistent  
pickup anywhere around the microphone.  
dB  
0
–5  
Equivalent noise level (self-noise): 21 dB SPLtypical,  
–10  
–15  
–20  
–25  
–30  
–35  
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  
positive voltage on pin 2 with respect to pin 3 of the  
output connector.  
10K 20K  
20  
100  
1K  
Frequency in Hz  
Cable: 8-foot (2.438-m), 2-conductor shielded, perma-  
nently attached cable. No other cable supplied; use  
2-conductor shielded mic cable.  
Operating Instructions  
Fig. 2  
Dimensions  
You can power the PZM-185 either by 12-48V  
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.  
Output connector: 3-pin XLR-type pro audio connector.  
3.409 in.  
(8.7 cm)  
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.  
3.129 in.  
(7.9 cm)  
To use battery power, open the cover (Fig. 3) and  
insert a AAA 1.5V battery. Please note the correct  
orientation of the battery.  
5.90 in.  
(15.0 cm)  
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.  
Weight: 4 ounces (115 grams).  
Included accessories: 1.5V AAA battery.  
.607 in.  
(1.5 cm)  
.732 in.  
(1.86 cm)  
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