Crown Audio MB-4E Installation, Architects’ and Engineers’ Specifications, Warranty, Service

Fig. 3
Horizontal-Plane Polar Response
330˚	0˚	30˚
	FRONT
	–0
300˚	–5		60˚
				Fig.4
	–10
	–15
	–20
270˚			90˚
				Fig.5
240˚			120˚	BOTTOM VIEW
		200 Hz		SCREWDRIVER
		1 kHz
	REAR	5 kHz
210˚	180˚	150˚

PRY OPEN HERE AND

ON OPPOSITE SIDE

MB-4 MB-4E

Installation

1.Typical placement for each mic is at arm’s

length from the user. Install one microphone in front of each person, or one between every two people.

If the microphone will be used on a lectern, install it on an open surface. Do not install it in a cavity or recessed area as the frequency re- sponse and polar pattern will be degraded.

2.Orient the mic so the word “Crown” is read- able by the user (right-side-up).

3.MB-4 only: Plug a mic cable with a female XLR-type connector into the power module. 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.

Wire the MB-4E to the MB-100 or MB-200 inter- face as described in the interface data sheet.

Architects’ and Engineers’ Specifications

The microphone shall be the Crown model MB- 4, MB-4E, or equivalent. The microphone shall be a half-supercardioid electret condenser type. The microphone shall use the principle of phase coherency achieved by mounting a small-diam- eter element very near a boundary. This elimi- nates comb filtering in the audible spectrum.

The microphone will exhibit excellent off-axis response and gain-before-feedback. The MB- 4 shall have a permanently attached 15-foot (4.572-m) cable connected to an XLR-type con- nector with built-in mic electronics. Powering shall be by 12-48V phantom power. The MB-4E shall have a permanently attached 15-foot (4.572-m) cable without electronics/connector. Its powering shall be by the Crown MB-100 or MB-200 Interface.

At the output connector, nominal sensitivity shall be 22 mV/Pa. Maximum SPL shall be 120 dB SPL for 3% THD. Equivalent noise shall be 22 dBA nominal. Frequency response shall be 50 Hz to 15 kHz with a uniform off-axis response, about 20 dB down at the rear nulls.

The Crown models MB-4 and MB-4E are speci- fied.

Warranty

Crown professional microphones are guaranteed against malfunction 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, check that it is aimed correctly and is connected as described in this data sheet. If there is hum or no signal, first repair or replace the cable. For the MB-4E only, check the slide-switch setting in the MB-100 or MB-200 Interface. If the mic is defective, return the microphone and the inter- face in their original packaging to Crown Factory

Service, 1718 West Mishawaka Road, Elkhart, IN 46517-9439. For further assistance or techni- cal 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

©2005 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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