Earthworks SR30 User Manual - page 2
Description
Earthworks SR30 is a directional pre-polari-
zed condenser microphone with a first-order
cardioid pickup pattern directly coupled to
a dedicated wideband, low output imped-
ance transformerless preamplifier. The SR30
requires a standard 48V Phantom Power
supply. It features a flat frequency response
from 30Hz to 30kHz (Fig. 2), fast impulse re-
sponse (Fig. 3), very low handling noise, uni-
form 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 individu-
ally measured frequency response curve. A
mounting clip is included with the micro-
phone. The SR30 is protected by US Patent
No. 6,091,829.
Applications
Earthworks SR30 is easy to operate. Connect
the microphone to a microphone preampli-
fier supplying 48V phantom power using a
standard XLR microphone cable. Please al-
low up to one minute for the microphone
to settle. Plugging in the microphone “hot”
(phantom power already present at the in-
put) will not damage the microphone, and is
actually preferred for faster settling. It is nor-
mal 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 SR30 give it a very wide range of ap-
plication possibilities. In the studio or on the
stage the SR30 is an ideal choice for a variety
of instruments including sax, flute, 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 is popular among concert tapers be-
cause of its open uncolored sound and among
jazz enthusiasts for its ability to capture explo-
sive performances while retaining the subtle
nuances of artistic expression.
This microphone has no removable parts.
Care of Microphones
Earthworks SR30 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:
• Avoidtouchingthefrontprotectivescreen.
• Neverattempttodisassemblethemicro-
phone – it cannot be opened.
• Avoidextremeheatandcondensinghu-
midity. Allow the microphone to warm up
in the case when bringing it in from the
cold weather.
• Roughhandlingmaydamagethemicro-
phone even if no visible marks are left.
• WhennotinusekeeptheSR30initscase.
Specifications
Frequency response: 30Hz-30kHz ±1.5dB
at 1 foot (30cm)
Polar Pattern:
Cardioid (Fig. 4)
Sensitivity:
10mV/Pa (-40dBV/Pa)
Power Requirements: 48V Phantom, 10mA
Peak Acoustic Input: 145dB SPL
Output:
XLR-3 (Fig. 1)
Output Impedance: 100
Ω
balanced
(50
Ω ea. pin 2 & 3)
Minimum Load:
600
Ω btw. pins 2 & 3
Noise:
22dBA equivalent
Dimensions L x D: 9 x .860 in.
(229 x 22 mm)
Weight:
.5lb (225g)
Compliant
Fig 1. XLR Output Connector Assignment of SR30
Fig 3. Impulse Response (Typical) of SR30
Fig 4. Polar Response (Typical) of SR30
Fig 2. Frequency Response (Typical) of SR30
Specifications are subject to change without notice.
Version 4, July 7, 2011