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Crown International
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: 574-294-8000
FAX: 574-294-8FAX
www.crownaudio.com
©
2008 Crown Audio
®
Inc. Specifi cations 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.
4/08 103278-6
Fig.4
MB-4
Architects’ and Engineers’ Specifi cations
The microphone shall be the Crown model
MB-4 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 fi ltering 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.
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 model MB-4 is specifi ed.
Fig.5
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, fi rst repair or replace the cable. If
the mic is defective, return the microphone and
the interface in their original packaging to Crown
Factory Service, 1718 West Mishawaka Road,
Elkhart, IN 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.
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