Crown Audio PZM-30D - Manual (Page 2)

Crown International, Inc.
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: 574-294-8000
FAX: 574-294-8FAX
www.crownaudio.com
©2006 Crown Audio ® , Inc. Specifi cations subject to change
without prior notice. Latest information available at
www.crownaudio.com. Crown, Crown Audio, PZM and Pres-
sure Zone Microphone are registered trademarks of Crown
International.
Architects’ and Engineers’ Specifi cations
PZM-30D
The microphone shall be the Crown PZM-30D
or equivalent. The microphone shall have a
hemispherical pattern (when used on an infi nite
boundary). The element shall be a subminiature
electret type of rugged construction. A smooth
frequency response from 20 Hz to 20 kHz shall
be obtained. The response shall be switch-
selectable between fl at (F) or rising (R).
The microphone shall employ the patented PRP
principle for maintaining phase coherency,
thus eliminating comb fi ltering in the audible
spectrum.
The PZM-30D shall have a sensitivity of –43
dBV/Pa. The microphone shall accept 150 dB
SPL input while contributing no greater than
3% THD (open circuit termination). Equivalent
noise shall be typically 20 dBA re .0002 dyne/
cm
2 . The microphone color shall be black. The
microphone connector shall be a male 3-pin
XLR-type. The Crown PZM-30D is specifi ed.
PZM-6D
The microphone shall be the Crown PZM-6D
or equivalent. The microphone shall have a
hemispherical pattern (when used on an infi nite
boundary). The element shall be a subminiature
electret type of rugged construction. A smooth
frequency response from 20 Hz to 20 kHz shall
be obtained. The response shall be switch-
selectable between fl at (F) or rising (R).
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The microphone shall employ the patented
PRP principle for maintaining phase coherency,
thus eliminating comb fi ltering in the audible
spectrum.
Permanently attached to the microphone is a
fi fteen-foot black cable with an XLRM connec-
tor.
The PZM-6D shall have a sensitivity of –43
dBV/Pa. The microphone shall accept 150 dB
SPL input while contributing no greater than
3% THD (open circuit termination). Equivalent
noise shall be typically 20 dBA re .0002 dyne/
cm
2 . The microphone color shall be black. The
microphone connector shall be a male 3-pin
XLR-type. The Crown PZM-6D is specifi ed.
Warranty
Crown professional microphones are guaran-
teed against malfunction for a period of three
years from date of original purchase. Please
refer to the enclosed full warranty statement for
more detail.
Service
If the microphone does not function properly,
replace or repair mic cables and check the
power supply.
If you determine the microphone product(s)
is defective, return the complete product in its
original packaging to: Crown Factory Service,
1718 W. Mishawaka Road, Elkhart, IN 46517-
9439. A Service Return Authorization (SRA) is
required for product being sent to the factory
for service. An SRA can be completed on line
at www.crownaudio.com/support/factserv.
htm.
For further assistance or technical support call
800-342-6939.
Using two-conductor shielded microphone
cable, plug the microphone into a phantom
power supply. Connect the power supply out-
put to a mixer mic input, or if your mixer has
phantom power built in, simply plug the PZM
directly into a mixer mic input.
If your mixer or recorder requires an unbal-
anced phone plug connector, modify the cable
leaving the power supply as follows: Solder the
cable shield and the pin-3 lead to the phone-
plug ground terminal. Solder the pin-2 lead to
the phone plug “hot” or “tip” terminal.
Placement
PZMs are designed to operate on any stiff
non-absorbent boundary (or surface). Typical
boundaries are a fl oor, wall, ceiling, or table.
This type of mounting improves the low-
frequency response.
The published response curve is measured on
an “infi nite” boundary such as a fl oor, ceiling or
wall. The microphone’s low-frequency response
depends on the size of the boundary on which
it is placed. Specifi cally, the response begins
to shelve down at and below the frequency F,
where F= 750/D and D= the boundary dimen-
sion in feet. At approximately F=188/D, the out-
put of the microphone is down 6 dB, becomes
omnidirectional, and maintains a fl at response
down to approximately 30 Hz.
Several placement examples are described in
the Crown Boundary Mic Application Guide. For
specifi c microphone application guides please
refer to our website at http://www.crownaudio.
com/mic_web/mic-library.htm.
Fig. 4 Phantom Power Supplies Fig. 3
PZM-6D Dimensions
PZM-30D
PZM-6D
2/06 137203-3