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 floor, wall, ceiling, or table. This type of mounting improves the low- frequency response.
The published response curve is measured on an “infinite” boundary such as a floor, ceiling or wall. The microphone’s low-frequency response depends on the size of the boundary on which it is placed. Specifically, 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 flat response down to approximately 30 Hz.
Several placement examples are described in the Crown Boundary Mic Application Guide. For specific microphone application guides please refer to our website at http://www.crownaudio. com/mic_web/mic-library.htm.
Architects’ and Engineers’ Specifications
PZM-30D
The microphone shall be the Crown PZM-30D or equivalent. The microphone shall have a hemispherical pattern (when used on an infinite 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 flat (F) or rising (R).
The microphone shall employ the patented PRP principle for maintaining phase coherency, thus eliminating comb filtering 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/ cm2. The microphone color shall be black. The microphone connector shall be a male 3-pin XLR-type. The Crown PZM-30D is specified.
PZM-6D
The microphone shall be the Crown PZM-6D or equivalent. The microphone shall have a hemispherical pattern (when used on an infinite 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 flat (F) or rising (R).
Fig. 4 Phantom Power Supplies
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PZM-30D
PZM-6D
The microphone shall employ the patented PRP principle for maintaining phase coherency, thus eliminating comb filtering in the audible spectrum.
Permanently attached to the microphone is a fifteen-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/ cm2. The microphone color shall be black. The microphone connector shall be a male 3-pin XLR-type. The Crown PZM-6D is specified.
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.
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. Specifications 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.
