The Shure SM81-LC is a cardioid condenser microphone used in live sound, broadcast, and recording scenarios. It features a flat-frequency response between 20 Hz and 20 kHz and provides a switchable low-pass filter that can be set to either 6 dB/octave or 18 dB/octave. Other features, such as a lockable -10 dB pad and SPL handling of 146 dB (with the pad on), make the microphone well suited for a variety of situations.
This mic sports a cardioid polar pattern that helps it achieve a high level of gain before inducing feedback, ensuring the mic will work well on the stage. This polar pattern also sports excellent off-axis rejection, helping to retain isolation in live and studio recordings.
The SM81-LC offers the kind of durability one would expect from Shure as well as low susceptibility to RF issues in the field. Its steel construction ensures the mic can be used in a variety of conditions, though phantom power is required to operate the SM81-LC.
Shure SM81Â Specs
Key Specs
Form Factor
Stand/Boom Mount
Element Type
Electret Condenser
Polar Pattern
Cardioid
Frequency Range
20 Hz to 20 kHz
Maximum SPL
136 dB SPL 146 dB SPL (with Pad)
Power Sources
Phantom Power
Microphone
Form Factor
Stand/Boom Mount
Intended Sound Sources
Acoustic Guitar, Electric Guitar, Piano, Drums
Sound Field
Mono
Element Type
Electret Condenser
Polar Pattern
Cardioid
Orientation
End Address
Pad
-10 dB
High-Pass Filter
100 Hz, 6 dB/Octave 80 Hz, 18 dB/Octave
Performance
Frequency Range
20 Hz to 20 kHz
Maximum SPL
136 dB SPL 146 dB SPL (with Pad)
Sensitivity
-45 dBV/Pa at 1 kHz 5.6 mV/Pa at 1 kHz
Signal-to-Noise Ratio
78 dB (at 1 Pa/94 dB SPL)
Power
Power Sources
Phantom Power
Operating Voltage
11 to 52 V (Phantom Power)
Physical
Color
Silver
Mounting Thread Size
5/8″-27 Female
Operating Temperature
20 to 120°F / -7 to 49°C
Operating Humidity
0 to 95%
Storage Temperature
-20 to 165°F / -29 to 74°C
Packaging Info
Package Weight
1.2 lb
Box Dimensions (LxWxH)
11.9 x 6.05 x 3.05″
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