Filter
Top Products
Crown International, Inc.
1718 W. Mishawaka Rd.
Elkhart, IN 46517-9439
TEL: 574-294-8000
FAX: 574-294-8FAX
Polar Response
Fig. 2
©
2008 by Crown Audio
®
, Inc.
Specifi cations subject to change without prior notice. Latest
information available online at www.crownaudio.com.
Crown and Crown Audio are registered trademarks of Crown
International, Inc.
5/08 136563-3
Fig. 3 Dimensions
Frequency response shall be uniform from
80 Hz to 15,000 Hz. The microphone shall be
powered from 12 to 48 volts phantom power-
ing. Open-circuit sensitivity shall be 6 mV/Pa.
Impedance shall be 150 ohms balanced.
Maximum SPL capability shall be 120 dB SPL at
3% THD. Equivalent noise shall be 28 dBA typi-
cal (0 dB =.0002 dyne/cm
2
).
In the LM-300A and LM-300AL, electronics and
connector for the microphone shall be in a rug-
ged steel cylindrical housing at the end of the
gooseneck. A fl at/low-cut switch shall be built
into the electronics housing.
In the LM-301A, electronics and connector for
the microphone shall be in a separate rugged
steel cylindrical housing. A fl at/low-cut switch
shall be built into the electronics housing. A
TA3F connector at the end of the mic cable shall
connect to the electronics. The microphone
shall have a built-in
5
/
8
-inch (15.88-mm)-27
threaded collar that screws onto a mic stand,
mic boom or Atlas AD-12 male fl ange. The
cable can be routed either outside or inside the
mounting device.
The Crown Model LM-300A, LM-300AL, or LM-
301A microphone is specifi ed.
Warranty
Crown professional microphones are guaran-
teed 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,
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
Factory Service, 1718 W. Mishawaka Road,
Elkhart, IN 46517-9439.
A Service Return Authorization (SRA) is re-
quired for product being returned for service.
An SRA can be completed on line at:
www.crownaudio.com/support/factserv.htm.
The mic and electronics are a matched pair.
Do not separate them. For service send them
both in.
For further assistance or technical support call
800-342-6939.
3"
(5.8 cm)
9.68"
(24.6 cm)
1.446"
(3.7 cm)
Total Length 22"
(55.9 cm)
4.86"
(12.3 cm)
3"
(5.8 cm)
3"
(5.8 cm)
4.75"
(12.1 cm)
1.446"
(3.7 cm)
Total Length 17.25"
(43.8 cm)
4.86"
(12.3 cm)
3"
(5.8 cm)
ddLM-300A
LM-300AL
LM-301A
All Models: Operating Instructions
1. Plug the electronics interface into a 3-pin
XLR-type connector with its cable routed to the
audio mixer.
2. At the mixer, plug the mic cable from the
lectern into an input with 12-48 volt phantom
power. Make sure the phantom power switch on
the mic is on.
3. If phantom power is not available on your
audio mixer, connect the mic cable from the
microphone to an external phantom power sup-
ply such as a Crown PH-1A. Connect another
mic cable between the phantom power supply
output and a mixer mic input.
4. If mechanical noise or breath pops are exces-
sive, use a pen or pencil to set the fl at/low-cut
switch in the electronics interface to “cut”
( ). Push the switch up to enable low cut.
5. Do not lubricate the gooseneck.
Architects’ and Engineers’ Specifi cations
The microphone shall be the Crown model
LM-300A, LM-300AL, or LM-301A. The micro-
phone shall be a supercardioid electret-con-
denser type with dual silent goosenecks.
Fig.
4
WS-9 Foam Pop Filter
LM-300A
LM-300AL
LM-301A