Crown LM-301A Manual

power. Make sure the phantom power switch
on the mic is on.
5. If phantom power is not available on your au-
dio mixer, connect the mic cable from the LM-
301A to an external phantom power supply such
as a Crown PH-1A or PH-4B. Connect another
mic cable between the phantom power supply
output and a mixer mic input.
6. If mechanical noise or breath pops are ex-
cessive, use a pen or pencil to set the flat/low-
cut switch in the electronics interface to "cut"
( ). Push the switch up to enable low cut.
7. Do not lubricate the gooseneck.
Architects' and Engineers' Specifications
The microphone shall be the Crown model
LM-301A or equivalent. The microphone shall
be a supercardioid electret-condenser type
with dual silent goosenecks. Electronics and
connector for the microphone shall be in a
Fig. 3
separate rugged steel cylindrical housing. A
flat/low-cut switch shall be built into the elec-
tronics housing. A TA3F connector at the
end of the mic cable shall connect to the
electronics. The microphone shall have a
built-in 5 / -inch (15.88-mm)-27 threaded
8
collar that screws onto a mic stand, mic
boom or Atlas AD-12 male flange. The cable
can be routed either outside or inside the
mounting device.
The microphone shall be powered from 12
to 48 volts phantom powering. Frequency
response shall be uniform from 80 Hz to
15,000 Hz. Open-circuit sensitivity shall be
6 mV/Pa. Impedance shall be 150 ohms bal-
anced.
Maximum SPL capability shall be 120 dB SPL
at 3% THD. Equivalent noise shall be 28 dBA
typical (0 dB =.0002 dyne/cm
Model LM-301A microphone is specified.
LM-301A Schematic
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 packaging to Crown
Service Department, Plant 2 SW, 1718 West
2 ). The Crown
Mishawaka Road, Elkhart, IN 46517. For fur-
ther 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.
4
WS-9 Foam Pop Filter
Crown International, Inc.
P . O. Box 1000
Elkhart, IN 46515-1000
TEL: 219-294-8000
FAX: 219-294-8FAX
© 2000 Crown International, Inc.
Specifications subject to change without prior notice.
Crown ® is a registered trademark of Crown Interna-
tional, Inc.
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LM-301A
125487-3