Cardioid Condenser Microphone
The SM27 is a large-diaphragm FET condenser with a fixed cardioid pickup pattern.
It is a revision and upgrade of the KSM27, and shares the same edge-terminated single-diaphragm capsule. The capsule membrane measures 25mm in diameter and is made of 2.5-micron, gold-plated Mylar. A dual-diaphragm version of this capsule can be found in the KSM44, KSM44A, and KSM42.
The mic has a 3-position high-pass filter:
- -6dB/octave at 115Hz (rolloff)
- -18dB/octave at 80Hz (cutoff)
A second switch enables a -15dB pad.
The amplifier circuit is a Class A, discrete, transformerless design. It incorporates a non-switchable subsonic filter to remove audio noise below 17Hz.
How does the SM27 differ from the KSM27?
- The SM27 is a different color (charcoal grey, rather than champagne).
- The SM27 has 5.5dB greater dynamic range, due to improvements in the amplifier circuit.
- The SM27 has lower self-noise: 9.5dBA vs. 14dBA.
The mics’ capsules, 3-layer grilles, and most other specifications are otherwise identical. The mics’ frequency-response charts are identical.
The SM27 ships in two configurations:
- SM27-LC (Live Configuration) - includes ShureLock™ mic clip (Shure p/n A32M) and a padded, zippered storage pouch (p/n A32ZB)
- SM27-SC (Studio Configuration) - includes ShureLock™ rubber shockmount (p/n A27SM) and a black velveteen pouch
The shockmount, a foam windscreen (p/n A32WS), and a PopperStopper™ pop filter (p/n PS6) are available as accessories.
Electronic Musician, 2009
The SM27 offers an exceptionally quiet and transparent solution… Its generally flat response and low self-noise make it a great choice for acoustic instruments or vocals. Through placement and proximity, though, it also lets you add some flattering color…
Premier Guitar, 2010
The SM27 has a wide vocabulary. It is truly versatile and has a distinct character for every situation. Learning to use that to your advantage… is much more involved than slapping a trustworthy handheld dynamic in that familiar spot on the grill. So, I can’t say this mic is for just anyone. But, depending on your experience and willingness to experiment, this could be the ultimate microphone for a one-mic kind of person with a $300 budget, or a great third mic for someone looking to evolve a beyond the [SM57] and the [SM58]…
The Shure SM27 is also known as: SM27-LC, SM27-SC.
The mic was released in 2010.
|Frequency Response - CardioidClick Graph to Compare!|
|Pickup Patterns||Pads & Filters|
(14.1 mV/Pa; 40 - 20,000 Hz)
| Diaphragm diameter: 25mm
Diaphragm gauge: 2.5 microns
|140 Ohms (Low)||Max SPL: 148 dB
Self-noise: 9.5 dB(A)
|642g (22.65oz)||156mm (6.14'')||53mm (2.09'')||
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