Description
Earthworks SR30HC is a directional
prepolari-zed condenser microphone with a
first-order hypercardioid pickup pattern directly
coupled to a dedicated wideband, low output
impedance transformerless preamplifier. The
SR30HC requires a standard 48V Phantom
Power supply. It features a flat frequency
response from 30Hz to 30kHz (Fig. 2), fast
impulse response (Fig. 3), very low handling
noise, uniform polar pattern, and high SPL
handling capabilities. It provides excellent
uncolored rejection of sounds arriving off-axis.
Each microphone is delivered with its own
calibration chart providing the individually
measured frequency response curve. A
mounting clip is included with the microphone.
The SR30HC is protected by US Patent No.
6,091,829.
Applications
Earthworks SR30HC is easy to operate.
Connect the microphone to a microphone
preamplifier supplying 48V phantom power
using a standard XLR microphone cable. Please
allow up to one minute for the microphone to settle.
Plugging in the microphone “hot” (phantom
power already present at the input) will not
damage the microphone, and is actually
preferred for faster settling. It is normal for any
phantom powered mic to “pop” when plugged
in or powered up. Make sure to mute the signal
to speakers or headphones when phantom
power is first applied.
The excellent performance characteristics of
the SR30HC give it a very wide range of
application possibilities. It offers exceptional
directional performance for guitar, sax, flute,
drums, bass and vocals. It is ideal in any
application where natural sound combined with
more rejection or a reduction in unwanted room
sound is desired. The SR30HC can pick an
instrument out of an ensemble while sounding
detailed and life-like. It combines open clarity
with uncolored rejection.
This microphone has no removable parts.
Care of Microphones
Earthworks SR30HC microphone is a
precision instrument designed and built to
provide years of top performance. Following
these simple rules will help to protect your
investment in the SR30HC:
• Avoid touching the front protective screen.
• Never attempt to disassemble the
microphone – it cannot be opened.
• Avoid extreme heat and condensing
humidity. Allow the microphone to warm up
in the case when bringing it in from the cold
weather. Rough handling may damage the
microphone even if no visible marks are left.
• When not in use keep the SR30HC in its
case.
Specifications
Frequency response: 30Hz to 30kHz ±1.5dB
at 6 inches (15cm)
Polar Pattern: Hypercardioid (Fig. 4)
Sensitivity: 10mV/Pa (-40dBV/Pa)
Power Requirements: 48V Phantom, 10mA
Peak Acoustic Input: 145dB SPL
Output: XLR (Fig. 1)
Output Impedance: 100Ω, balanced
(50Ω ea. pin 2 & 3)
Minimum Load: 600Ω btw. pins 2 & 3
Noise: 22dBA equivalent
Dimensions L x D 229 x 22 mm
(9 x .860 in.)
Weight: 225g (.5lb)
Compliant
Fig. 1. XLR Output Connector Assignment of SR30HC
Fig. 2. Frequency Response (Typical) of SR30HC
Fig. 3. Impulse Response (Typical) of SR30HC
Fig. 4. Polar Response (Typical) of SR30HC
Specifications are subject to change without
notice.
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