Congratulations on your purchase of Earthworks Hanging ChoirMic™ C30/C
(cardioid) or C30/HC (hypercardioid) microphones. You will be thrilled with the
results that will be obtained using these microphones on your choir. You will hear
far more detail with no spotlighting or hot spots, a more uniform pick-up, more gain
before feedback and a high rejection of sounds from the rear of the microphone.
After reading this manual, if you have any questions, please contact Earthworks using
the contact information on the back cover of this manual.
Items Enclosed with the Earthworks ChoirMic™ Microphone:
1 - ChoirMic™ Microphone (C30/C or C30/HC in black or white)
(microphone comes with a 30 foot Star Quad™ microphone cable attached).
The ChoirMic cable comes standard with no XLR-3M connector, unless the
C30-XLR accessory was purchased (which includes an installed XLR-3
male connector).
1 - PW1 Foam Windscreen (in black or white)
1 - ChoirMic™ Users Manual
IMPORTANT NOTICE - Please Read This:
Earthworks microphones do not pick up sound in the same way conventional
microphones do. This is because Earthworks microphones have near-perfect
polar response and high rejection of sounds from the rear of the microphone.
Therefore, Earthworks microphones may need to be installed and positioned
differently than conventional microphones to achieve optimum results.
Please take the time to fully read the information regarding installation
and positioning starting on the next page. Doing so, could save you time
and the possibility of having to re-install or re-position the microphones.
Again, Earthworks microphones do not pick up sound like conventional
microphones, so understanding the pick-up characteristics of Earthworks
microphones prior to installation and positioning will provide you with
optimum results the first time.
See page 12 for XLR connector pin information prior to soldering an XLR
connector on the ChoirMic microphone cable.
1
Volume I, Feb 20, 2010
12
C30/C
Frequency response
30Hz to 30kHz +2dB@6”
Polar Pattern
Cardioid
Sensitivity
1
0mV/Pa (- 40dBV/Pa)
Power requirements
48V Phantom,
1
0mA
Peak acoustic input
1
45dB SPL
Output XLR (PIN 2+)
Minimum output load
600Ω, balanced
between pins 2&3
Noise
22dB SPL (A weighted)
Dimensions L x D
Weight
1
2.75 x .860 inches
(324mm x 22mm)
(microphone only) .22lb (
1
00g)
(mic with 30’ cable) 1.2lb (544.3g)
Attached Cable
30’ (9.14m)
Canare Star Quad
™
SPECIFICATIONS
The ChoirMics™ use Canare™ Star Quad™ microphone cable which has
two twisted pairs and a shield. Solder the shield to pin 1, the blue twisted
pair (i.e. both blue wires) to pin 2 and solder the white twisted pair (i.e.
both white wires) to pin 3.
Pin Connection Information for Installing the XLR connector
C30/HC
Frequency response
Polar Pattern
Hypercardioid
Sensitivity
1
0mV/Pa (- 40dBV/Pa)
Power requirements
48V Phantom,
1
0mA
Peak acoustic input
1
45dB SPL
Output XLR (PIN 2+)
Minimum output load
600Ω, balanced
between pins 2&3
Noise
22dB SPL (A weighted)
Dimensions L x D
30Hz to 30kHz +2dB@6”
1
2.75 x .860 inches
(324mm x 22mm)
Weight
(microphone only) .22lb (
1
00g)
(mic with 30’ cable) 1.2lb (544.3g)
Attached Cable
30’ (9.14m)
Canare StarQuad
™
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