Crown Audio CM-31W Architects’ and Engineers’ Specifications, Warranty, Service, Crown Audio, Inc

Architects’ and Engineers’ Specifications

The microphone shall be the Crown CM-31. It shall be a professional-quality supercar- dioid condenser microphone designed for inconspicuous miking of a choir or other large musical ensembles. It can be hung from the ceiling, where its cable shall connect to a cylin- drical electronics power module that adapts the microphone for phantom powering.

Frequency response shall be 40 Hz to 20,000 Hz. Extreme low frequencies shall be filtered out to reduce pickup of room rumble. The power module shall have flat/low-cut switch. Open- circuit sensitivity shall be 10 mV/Pa. Equivalent noise level shall be 28 dBA SPL typical; SPL

Fig. 4a

Fig. 4b

for 3% THD shall be 120 dB. The microphone output shall be balanced, low impedance, with RFI and static protection.

A built-in removable hanger shall allow posi- tion adjustment. The mic-cable connector shall be a TA3F. The power module input connector shall be a TB3M and the power module out- put connector shall be a 3-pin male XLR-type. Operating voltage shall be standard phantom power, 12 to 48 volts DC, positive voltage on pins 2 and 3 with respect to pin 1 of output con- nector. Finish shall be black (CM-31) or white (CM-31W). The cable from mic to electronics shall be 30-foot (9.15-m) 2-conductor shielded. The Crown CM-31 is specified.

Fig. 6

Fig. 7

Use the clamp and screw provided to mount the CM-31/CM-31W power module onto the ceiling, a wooden beam, or beneath a lectern/table.

CM-31

CM-31W

Warranty

Crown professional microphones are guaran- teed unconditionally against malfunction from any cause for a period of three years from date of original purchase. See enclosed warranty sheet for additional information.

Service

If the microphone does not function properly, replace or repair mic cables and connectors, check the power supply.

If you determine the microphone product(s) is defective, return the complete product mic and interface) in its original package 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 ser- vice. An SRA can be completed on line at www.crownaudio.com/support/factserv.htm.

For further assistance or technical support call 800-342-6939.

The mic and electronics are a matched pair. Do not separate them. For service send them both in.

Fig. 5	Crown International, Inc.
	1718 W. Mishawaka Rd.
	Elkhart, IN 46517-9439
	TEL: 574-294-8000
	FAX: 574-294-8FAX
	www.crownaudio.com

©2005 Crown Audio®, Inc.

Specifications subject to change without prior notice. Crown and Crown Audio are registered trademarks of Crown International, Inc.

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