Electro-Voice PC-18/XLR Users Manual

PolarChoice™ 12
PolarChoice™ 18

• Four polar patterns: Omnidirec-

tional, Cardioid, Supercardioid,
and Hypercardioid.

• Consistent on-axis response.

• Available in 12 or 18 inch versions.

• Shielded pre-amp is highly-resistant

to electrical noise and radio fre­quency interference.

• Non-reflecting black finish.

• Three-pin male XLR-type output

connector.

• Phantom powered backed electret

condenser

Description

The PolarChoice
are back-electret condenser gooseneck
podium microphones designed for sound
reinforcement systems where sound clarity
and gain-before-feedback are of major
importance. The flat-bladed screwdriver
activated rotary selector switch has the
following settings:

Switch Setting Polar Pattern
0 Omnidirectional
1 Cardioid
2 Supercardioid
3 Hypercardioid

Altering the polar pattern does not change
the on-axis sonic character of the micro­phone; therefore changes in equalizer set­tings are unnecessary.

The PolarChoice
are acoustically designed for high-quality
sound reinforcement and broadcast applica­tions. The frequency response is tailored for
wide-range sound reproduction with very
natural sound pick-up for either distant or
close-up use. The small-diameter gooseneck
has two supple joints and a rigid center tube.
The rigid tube prevents unsightly twisting
of the gooseneck but permits the user to ex-

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12 and PolarChoice™ 18

™

12 and PolarChoice™ 18

actly position the microphone. The electron­ics housing’s 3/4-inch diameter base is ter­minated with an XLR-type 3-pin connector
which allows the microphone to be plugged
directly into an existing panel-mount XLR
receptacle. The housing is machined steel
for ruggedness and superior EMI/RFI
attenuation. The PolarChoice
PolarChoice
tom-powered with a wide voltage range of
9-52V dc (DIN Standard 45 596).

Applications

The PolarChoice
can be used on lecterns, podiums, desk and
table-tops, or other applications which re­quire a quick plug-in gooseneck microphone.
To maximize gain-before-feedback the
PolarChoice
directional polar patterns which allow the
user to pick the directional polar pattern for
optimum effect. For those applications
where gain-before-feedback is not a prob­lem an omnidirectional pattern is included.

Applications requiring speaking close to the
microphone at podiums, lecterns, or pulpits
normally require a windscreen to control
breath noise and P-popping or, in some cases,
wind noise from circulating air. A small
external foam windscreen is included with

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18 are designed to be phan-

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12 and PolarChoice™ 18

™

’s multipolar design has three

™

12 and

the PolarChoice
microphones for those applications.

Architectural & Engineering
Specifications

PolarChoice

The microphone shall be a back-electret con­denser type with a frequency response of 75
Hz to 15 kHz. The microphone shall have a
nominal, balanced output impedance of 200
ohms. The microphone shall have four
selectable polar patterns: omnidirectional,
cardioid, supercardioid, and hypercardioid.
The microphone shall have an output power
level of -44 dB, where 0 dB = 1 milliwatt
per pascal, and outputs shall not be appre­ciably affected by the following temperature
and humidity extremes: -29° to 74° C (-20°
to 165° F) when the relative humidity is
0-50%; -29° to 57°C (-20° to 135°F) when
the relative humidity is 0-95%.

Dimensions shall be 20 mm (0.79 in.) diam­eter and 409.7 mm (16.1 in.) long. The mi­crophone shall include a 298.5 mm (11.8 in.)
gooseneck with professional XLR-type 3-pin
style terminating connector and an external
windscreen. The microphone shall have a
nonreflecting black finish. Termination to
the electronics module shall be a 3-pin male
XLR type connector. The microphone shall

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12 and PolarChoice™ 18

™

12

PolarChoice™ 12/P olarChoice™ 18

be of metal construction.
The Electro-V oice PolarChoice

™

12 is speci-

fied.

™

PolarChoice

18

The microphone shall be a back-electret con­denser type with a frequency response of 75
Hz to 15 kHz. The microphone shall have a
nominal, balanced output impedance of 200
ohms. The microphone shall have four se­lectable polar patterns: omnidirectional, car­dioid, supercardioid, and hypercardioid. The
microphone shall have an output power level
of -44 dB, where 0 dB = 1 milliwatt per pas­cal, and outputs shall not be appreciably af­fected by the following temperature and
humidity extremes: -29° to 74° C (-20° to
165° F) when the relative humidity is 0-50%;

PolarChoice™ 12/PolarChoice™ 18

-29° to 57°C (-20° to 135°F) when the rela­tive humidity is 0-95%.

Dimensions shall be 20 mm (0.79 in.) diam­eter and 575.3 mm (22.7 in.) long. The mi­crophone shall include a 461.0 mm (18.2 in.)
gooseneck with professional XLR-type 3-pin
style terminating connector and an external
windscreen. The microphone shall have a
nonreflecting black finish. Termination to
the electronics module shall be a 3-pin male
XLR type connector. The microphone shall
be of metal construction.

The Electro-Voice PolarChoice

™

18 is speci-

fied.

Warranty (Limited)

Electro-Voice products are guaranteed
against malfunction due to defects in mate­rials or workmanship for a specified period,
as noted in the individual product-line
statement(s) below, or in the individual prod­uct data sheet or owner’s manual, beginning
with the date of original purchase. If such
malfunction occurs during the specified pe­riod, the product will be repaired or replaced
(at our option) without charge. The product
will be returned to the customer prepaid.
Exclusions and Limitations: The Limited
W arranty does not apply to: (a) exterior fin­ish or appearance; (b) certain specific items
described in the individual product-line
statement(s) below, or in the individual prod­uct data sheet or owner’s manual; (c) mal­function resulting from use or operation of
the product other than as specified in the
product data sheet or owner’s manual; (d)
malfunction resulting from misuse or abuse
of the product; or (e) malfunction occurring
at any time after repairs have been made to
the product by anyone other than Electro­Voice Service or any of its authorized ser­vice representatives. Obtaining Warranty

Service: To obtain warranty service, a cus­tomer must deliver the product, prepaid, to
Electro-Voice Service or any of its autho­rized service representatives together with
proof of purchase of the product in the form
of a bill of sale or receipted invoice. A list of
authorized service representatives is avail­able from Electro-V oice Service at 600 Cecil
Street, Buchanan, MI 49107 (800/234-6831
or FAX [phone]). Incidental and
Consequential Damages Excluded: Prod­uct repair or replacement and return to the
customer are the only remedies provided to
the customer. Electro-Voice shall not be li­able for any incidental or consequential dam­ages including, without limitation, injury to
persons or property or loss of use. Some
states do not allow the exclusion or limita­tion of incidental or consequential damages
so the above limitation or exclusion may not
apply to you. Other Rights: This warranty
gives you specific legal rights, and you may
also have other rights which vary from state
to state.

For technical assistance, contact Technical
Support at 800/234-6831 or 616/695-6831,
M-F, 8:00 a.m. to 5:00 p.m. Eastern Stan­dard time.

Specifications subject to change without
notice.

Figure 1—Frequency Response

2