Earthworks SR25 Users Manual
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SR25
Multi-Purpose Cardioid
High Definition Microphone
User’s Guide
™
Printed in USA
MADE IN USA
earthworksaudio.com
July 11, 2018
SR25
Description
The Earthworks SR25 is a directional pre-polarized condenser microphone with a rst-order cardioid pickup pattern directly coupled to a dedicated wideband, low output
impedance transformerless preamplier. The SR25 requires a standard 24-48V Phantom Power supply. It fea-
tures a at frequency response from 50Hz to 25kHz, 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.
Applications
The Earthworks SR25 is easy to operate. Connect the mi-
crophone 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 head-
phones when phantom power is rst applied.
The SR25 is designed specically for drums, percussion
and amplied instruments. The SR25 has a brilliance that
is ideal for drum overheads, percussion, Leslie speakers,
guitar and bass. The SR25 is a versatile microphone for
general studio and stage use. Its uniform pickup pattern
results in remarkably open sound, and its excellent offaxis rejection reduces feedback and maximizes available
gain. A mounting clip is included with the microphone.
This microphone has no removable parts.
Care of Microphone
The Earthworks SR25 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 SR25:
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 SR25 in its case.
•
Specications
Frequency response: 50Hz to 25kHz ±2dB at 30cm
Polar Pattern: Cardioid
Sensitivity: 10mV/Pa (Typical)
Power Requirements: 24-48V Phantom, 10mA
Peak Acoustic Input: 145dB SPL
Output: XLR-3
Output Impedance: 65Ω, balanced between pins 2 & 3
Minimum Load: 600Ω btw. pins 2 & 3
Noise: 20dB, A equivalent
Dimensions L x D: 165 x 22 mm (6.5 x .860 in.)
Weight: 160g (.35lb)
Specications are subject to change without notice.
XLR Output Connector Assignment of SR25
Frequency Response of SR25 (typical)
Impulse Response of SR25 (typical)
Polar Response of SR25 (typical)
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