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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, Crown Audio, PZM and Pressure
Zone Microphone
are registered trademarks of Crown
International.
1/08 126839-5
4. Run the mic cable through the hole in the elec-
trical box. Service the end of the mic cable.
5. Connect the mic cable’s audio hot lead to the
terminal labeled AUDIO +. Connect the audio cold
lead to the terminal labeled AUDIO –. Connect the
cable shield to the terminal labeled GROUND.
If you plan to use an RCA or phone connector: Sol-
der the cable shield to the long lug, and solder the
AUDIO + lead to the tip or pin. Do not connect the
AUDIO – lead because this may reduce the output
level in an unbalanced confi guration.
6. Attach the power leads to the screw terminals
marked “~”. You can use 12-24V AC or DC. Polar-
ity does not matter in either case.
7. Using the two shorter screws provided, attach
the mic to the electrical box. Then use the other
two screws to secure the louvered wall plate to the
microphone. Do not remove or damage the plastic
membrane.
8. If the mic cable is run in metal conduit, ground
loops can occur that can cause hum. If hum is
present after installation, return the unit to Crown’s
service dept. for ground-lift modifi cation.
Architects’ and Engineers’ Specifi cations
The microphone shall be the Crown model
PZM-11LLWR or equivalent. It shall be a Pressure
Zone Microphone, mountable in a wall or ceiling,
and designed not to look like a microphone. It shall
have a line-level output (1.4 V/Pa unloaded) and be
powered by 12-24V AC or DC, or phantom power.
The frequency response shall be from 80 Hz to
10,000 Hz with a low-frequency rolloff to reduce
rumble and high-frequency boost for articulation.
The audio connector and power connector shall
be screw terminals. Output shall be balanced, low
impedance. The electret condenser transducer
shall have a hemispherical polar pattern when the
microphone is mounted in a wall or ceiling. The
Crown PZM-11LLWR microphone is specifi ed.
Warranty
Crown professional microphones are guaranteed
against malfunction for a period of three years
from date of original purchase. Please refer to the
enclosed full warranty statement for more detail.
Fig. 3
Service
If the unit fails to work, recheck all your connec-
tions as described in the Installation Section.
Check the cables. Also check the power supply to
verify that it is supplying correct voltage. A Service
Return Authorization (SRA) is required for product
being sent to the factory for service. An 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 assis-
tance or technical support call 800-342-6939.
PZM-11LLWR