Application, Warranty, Service, 103277-11

Fig. 4

Fig.5

BOTTOM VIEW

Reseat washer after reassembly.

MB-3

Screwdriver

FRONT

Lift washer and pry open the grille assembly here. Pull grille assembly up and over the opposite side.

4.Plug a mic cable with a female 3-pin XLR- type connector into the mic. Connect the other end of the cable to a phantom power supply. Or, if your mixer has phantom power, connect the mic cable directly to a mic input and turn on phantom power.

Application

To obtain the clearest sound, connect each MB- 3 to an automatic (gated) microphone mixer. Adjust the automatic mixer so that it turns off all mics except for the one in use. One mic by itself sounds much clearer (less reverberant) than several mics on at once.

For more application help, see the Crown Micro- phone Application Guide for Teleconferencing and Distance Learning, available online at www. crownaudio.com > Applications > Applications Guides.

Architects’ and Engineers’ Speciﬁcations The microphone shall be the Crown model MB-3 or equivalent. The microphone shall be a

half-supercardioid electret condenser type. The microphone shall use the principle of phase co- herency achieved by mounting a small-diameter element very near a boundary. This eliminates comb ﬁltering in the audible spectrum.

The microphone will exhibit excellent off-axis response and gain-before-feedback. The mic shall have a bottom-mounted 3-pin pro audio XLR-type male connector. Powering shall be by 12-48V phantom power.

Nominal sensitivity shall be 22 mV/Pa. Maxi- mum SPL shall be 120 dB SPL for 3% THD. Equivalent noise shall be 22 dBA nominal. Fre- quency response shall be 50 Hz to 15 kHz with a uniform off-axis response, about 20 dB down at the rear nulls.

The Crown model MB-3 is speciﬁed.

Warranty

Crown professional microphone products are guaranteed against malfunction for a period of three years from date of original purchase. See enclosed warranty sheet for additional informa- tion.

Service

If the microphone does not function properly, check that it is aimed correctly and is con- nected as described in this data sheet. If there is hum or no signal, ﬁrst repair or replace the cable. A Service Return Authorization (SRA) is required for product being sent to the factory for service. A SRA can be completed on line at www.crownaudio.com/support/factserv.htm. If service is required, return the microphone in its original packaging to: Crown Factory Service, 1718 West Mishawaka Road, Elkhart, Indiana 46517-9439.

A Service Return Authorization (SRA) is re- quired 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 1718 W. Mishawaka Rd. Elkhart, IN 46517-9439 TEL: 574-294-8000 FAX: 574-294-8FAX www.crownaudio.com

©2007 Crown Audio® Inc. Speciﬁcations subject to change without prior notice. Latest information available at www. crownaudio.com. Mini-Boundary is a trademark, and Crown and Crown Audio are registered trademarks of Crown International. Printed in U.S.A.

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