Crown Audio LM-201 User Manual
LM-201
POLAR
PATTERN
SUPERCARDIOID CONDENSER
LECTERN MICROPHONE
he Crown® LM-201 is a professional quality, supercardioid electret condenser
T
microphone designed for use on lecterns,
pulpits, or similar applications.
The microphone is easily installed with the included mounting screws. As it is swiveled to the
desired position, adjustment is far quieter than
conventional gooseneck microphones. Swivel motion is limited to prevent cable damage. The LM201 is rugged and is built to withstand daily use.
Because of its supercardioid pickup pattern, the
LM-201 rejects background noise and room reverberation, improving gain-before-feedback more
than a microphone with a cardioid pattern.
The LM-201 has a smooth, wide-range frequency
response for natural reproduction of the voice.
Low frequencies are fi ltered out to reduce pickup
of lectern thumps, room rumble, etc.
The included wire-screen grille has a two-stage
pop fi lter to reduce pickup of explosive breath
sounds. An external foam windscreen is supplied
for extra pop rejection or for outdoor use. The base
and mic capsule are shock-mounted to attenuate
handling noise and lectern thumps.
The microphone output is balanced, low impedance, which allows long cable runs without hum
pickup or high-frequency loss.
Two fi nishes are available: black (model
LM-201P) or brown (model LM-201B).
Operating Instructions
The LM-201 comes in two parts: a microphone/
swivel mount and an electronics module.
Mounting
1. Using the swivel mount as a template, mark and
drill three
the mounting screws (supplied).
NOTE: Your pulpit might already have mounting holes that fi t the LM-201. If these holes are
oriented opposite to those in the LM-201 base,
simply remove the Phillips pan-head screw from
the side of the base and align the holes in the base
with those in the pulpit. Then, rotate the boom arm
180°, reinsert the pan-head screw into the hole
in the side of the base and mount the base to the
pulpit.
2. Drill a ½-inch-diameter (12.7-mm) hole in the
lectern top in the center of the three 1/8-inch-diameter (3.175-mm) holes. The microphone cable will
run through this hole. Alternatively, you can run
the cable along the top of the lectern and down the
side, so that no cable hole is needed.
1
/8-inch-diameter (3.175-mm) holes for
Features
• Built-in shock mount attenuates thumps
• Rugged ball-and-socket swivel adjusts silently
• Supercardioid polar pattern reduces feedback
Specifi cations
Type: Unidirectional condenser.
Element: Electret condenser.
Frequency response (typical): 100 Hz to 15,000 Hz.
See Fig. 1.
Polar pattern: Supercardioid. See Fig. 2.
Impedance: 150 ohms nominal (120 ohms actual),
balanced. Recommended minimum load impedance
1000 ohms.
Open-circuit sensitivity: 6.0 mV/Pa* (–44.5 dBV/Pa).
Power sensitivity: –42 dB re 1 mW/Pa*.
Equivalent noise level: 24 dB SPL typical (0 dB=.0002
S/N ratio: 70 dB at 94 dB SPL.
Maximum SPL: 120 dB SPL for 3% THD.
Polarity: Positive pressure on the diaphragm produces
Operating voltage:
Option 1: Phantom power, 12 to 48 volts DC, positive
Option 2: 12-24 DC power supplied by a separate
Operating temperature range: –20° to +50° C, or –4°
Current drain: 5.8 mA.
Materials: Polycarbonate swivel mount and ball, steel
Finish: Black (LM-201P) or brown (LM-201B).
Cables: Grey, permanently attached, 2-conductor
Weight (microphone and cable only): 10.2 ounces
Weight (microphone, cable, and electronics module):
Dimensions: See Figs. 3a, 3b and 3c.
Included accessories: Foam windscreen, Crown part
Optional accessories: PH-1A phantom power supply
*1 pascal = 10 dynes/cm
2
), A-weighted.
dyne/cm
a positive voltage on XLRM pin 2 with respect to
pin 3.
voltage on output pins 2 and 3 with respect to pin 1.
AC/DC adapter (not supplied). You select this option
by moving jumpers inside the electronics module
(instructions inside cover).
to +122° F.
tube and grille, steel electronics module.
shielded cable, terminated with spade lugs for connection to electronics module. Six-and-one-half feet
(2 meters) long from swivel mount to spade lugs.
Black, permanently attached, 2-conductor shielded
cable, 18 inches (0.5 meters) long, with 3-pin male
XLR audio connector.
(288.3 grams).
18.2 ounces (515 grams).
number WS-8.
(1 ch., battery or AC adapter powered).
2
= 10 microbars = 94 dB SPL.
• Smooth, natural sound quality
• Built-in pop fi lter and supplied foam windscreen reduce breath pops
Fig. 1
Frequency Response
Frequency in Hz
Fig. 2
Polar Response
Fig. 3a
16.00"
(40.6 cm)
1.15"
(2.9 cm)
3.15"
(8.0 cm)
LM-201
Fig. 3b
12-24 VDC
WHITE
2.00"
(5.1 cm)
SUPER CARDIOID
MICROPHONE
MIC IN
SHIELD
BLACK
3. Using the supplied mounting screws and washers, screw the swivel mount to the lectern top.
Tighten the mounting screws securely. Do not
overtighten. Some slight wobbling of the base is
normal when the microphone is moved.
4. For unlimited microphone rotation, remove the
set screw in the base of the microphone. Caution:
If the boom arm is rotated fully around, it may
twist and damage the microphone cable.
5. Using woodscrews, mount the base plate of the
electronics module inside the lectern or wherever
desired. You can remove the module cover by undoing the screws on the side of the module.
Powering: The LM-201 is factory set for use with
12-48 volt phantom power. To change to 12-24
volt DC power, obtain from an electronics retailer
a 12-24V DC power supply with a 1/8-inch phone
plug connector, positive tip. Then follow the instructions inside the electronics module cover.
Connections: Connect the LM-201 cable spade
lugs to the electronics module as shown in Figure
3b. Plug the cable going to your mixer into the 3pin XLRM output connector (see Figure 3c).
Warning: Do not lubricate the microphone swivel
mount, as it may lose its friction and not stay in
place. Use only mild soap and water to clean the
microphone.
2.80"
(7.1 cm)
Fig. 3c
1.950"
(4.95 cm)
3.055"
(7.8 cm)
3.500"
(8.9 cm)
1.250"
(3.2 cm)
Tension Adjustment: If the swivel becomes loose,
remove the swivel mount from the lectern and look
under the mount. You’ll see a ring with two holes
180 degrees apart. Place the tips of a needlenose
pliers in these holes, and rotate the ring clockwise
until the swivel is suffi ciently tight. Remount the
unit.
Architects’ and Engineers’ Specifi cations
The microphone shall be the Crown model LM-201
or equivalent. The microphone shall be a supercardioid electret-condenser type with shock-mounted
capsule, a built-in shock-mounted swivel mount
and pop-fi lter grille. Permanently attached to the
microphone shall be a 6.5-ft (2-m), two-conductor
shielded cable that connects to a supplied electronics module. The output of the electronics module
shall have an 18-in. (0.5-m) microphone cable
terminated with an XLRM audio connector.
The microphone shall be powered from 12 to
48 volts phantom powering or 12-24 volts DC.
Frequency response shall be uniform from 100 Hz
to 15,000 Hz. Open-circuit sensitivity shall be 6.0
mV/Pa. Impedance shall be 150 ohms balanced.
Maximum SPL capability shall be 120 dB SPL at
3% THD. Equivalent noise shall be 24 dBA typical
(0 dB =.0002 dyne/cm
2
).
The LM201P shall have a black fi nish; the LM201B shall have a brown fi nish.
The Crown Model LM-201 microphone is specifi ed.
Microphone 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 unit fails to work, replace or repair any
additional mic cables, or check the power supply. 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.
For further assistance or technical support call
800-342-6939.
At the factory, the electronics module is
matched to your particular microphone’s frequency response. If you determine that just the
microphone or the module needs service, send
both anyway. Then we can match your electronics to your microphone. The serial number is on
both pieces.
Crown International, Inc.
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. Crown and
Crown Audio are registered trademarks of Crown
International, Inc.
7/08 125958-8
Loading...