Earthworks SR30/HC Users Manual
SR30/HC
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Multi-Purpose Hypercardioid
High Definition Microphone
User’s Guide
™
Printed in USA
earthworksaudio.com
July 11, 2018
MADE IN USA
SR30/HC
Description
The Earthworks SR30/HC is a directional pre-polarized
condenser microphone with a rst-order hypercardioid
pickup pattern directly coupled to a dedicated wideband,
low output impedance transformerless preamplier. The
SR30/HC requires a standard 24-48V Phantom Power
supply. It features a frequency response from 20Hz to
30kHz, fast impulse response, 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.
Applications
The Earthworks SR30/HC is easy to operate. Connect
the microphone to a microphone preamplier supplying 24-48V 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 phan-
tom power is rst applied.
The excellent performance characteristics of the
SR30/HC make it ideal for a wide range of applications.
In the studio or on the stage the SR30/HC is an ideal
choice for a variety of instruments including sax, ute,
trumpet, guitar, piano, and percussion. It is superior for
choir because it doesn’t spotlight. Rather, it picks up an
entire section with no hot spots. The SR30/HC is popular among concert tapers because of its open uncolored
sound and among jazz enthusiasts for its ability to capture explosive performances while retaining the subtle
nuances of artistic expression.
This microphone has no removable parts.
Care of Microphone
The Earthworks SR30/HC 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 SR30/HC:
Specications
Frequency response: 20Hz to 30kHz
Polar Pattern: Hypercardioid
Sensitivity: 20mV/Pa (-34dBV/Pa)
Power Requirements: 24-48V Phantom, 10mA
Peak Acoustic Input: 139dB SPL
Output: XLR-3
Output Impedance: 65Ω, balanced between pins 2 & 3
Minimum Load: 600Ω btw. pins 2 & 3
Noise: 16dB, A equivalent
Dimensions L x D: 229 x 22 mm (9 x .860 in.)
Weight: 225g (.5lb)
Specications are subject to change without notice.
XLR Output Connector Assignment of SR30/HC
Frequency Response of SR30/HC (typical)
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 SR30/HC in its case.
•
Impulse Response of SR30/HC (typical)
Polar Response of SR30/HC (typical)
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