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The Electro-Voice Model RE27N/D
dynamic cardioid microphone

Electro-Voice RE27N/D

The Electro-Voice model RE27N/D is a professional quality dynamic cardi­oid micro­phone designed for broadcast production announce and voice-over, high-quality recording, and sound reinforcement applications. The RE27N/D utilizes a revolu­tionary neodymium alloy magnet and a rein­forced diaphragm dome, a combination offering increased sensitivity (up to 6 dB more output), undistorted output at high sound pressure levels and an extended high-frequency response.

The exceptional sensitivity of the RE27N/D, excellent transient response and inherently low noise of the dynamic transducer all combine to ensure a superior signal-to-noise ratio, easily comparable to the finest condenser cardioid micro­phones. To further reduce noise, a highly effective hum-bucking coil is used to attenuate hum from lighting and other sources. The RE27N/D’s Continuously Variable-D design reduces bass-boosting prox­imity effect to maintain a uniform low-frequency response, up close or at a distance. Two easily operated bass roll-off switches, offering a sharp low-frequency cut at 200 Hz or a gentle roll-off, are avail­able for special situa­tions where bass attenuation is required. A third switch is available for reducing the high-frequency treble boost. The true, uniform cardioid polar pattern of the RE27N/D offers the greatest rejection at 180 degrees off axis, ensuring superior gain before feedback.

An integral blast and wind filter covers each acoustic opening on the RE27N/D, allowing close-talk situations with no worry of P pops, breath sounds or excessive sibilance. Part of the filter also shock mounts the in­ternal micro­phone transducer, reducing the transfer of vibration from external sources. this shock mount system along with the extremely rugged exterior steel casing allows the RE27N/D to with­stand all the rigors of professional use.

Integral passive networks, controlled with three recessed slide switches, are provided. (See next photo.) With switches in the “flat” position, the micro­phone is essentially flat from 80 to 2,000 Hz with a 6 dB rise in response from 2,000 to 16,000 Hz. With the first filter switch in its rolled-off posi­tion, low-frequency response shall tilt down 6 dB from 250 to 100 Hz. The second filter switch, when in its rolled-off position, provides a gentle roll-off of 12 dB from 1,000 to 100 Hz. The third filter switch, when in the rolled-off position, decreases the high-frequency rise by 3 dB.

Electro-Voice RE27N/D roll-off switches

Comments: The differences in roll-off settings are subtle. Quality speakers or headphones are suggested. A live music recording with wide frequency response would make for a much more effective demonstration than the spoken word. But if you listen carefully—perhaps more than once—I'm confident the small changes will become noticeable.
Listen to a roll-off settings comparison using a solid-state mic preamp.
Listen to a roll-off settings comparison using a vacuum tube mic preamp.

Suzy Tavarez at KIIS, Los Angeles

Suzy Tavarez at KIIS-FM 102.7, Los Angeles.

Listen to Suzy perform a quick break.

Electro-Voice RE27N/D frequency response Electro-Voice RE27N/D wiring diagram Electro-Voice RE27N/D dimensions Electro-Voice RE27N/D polar response Electro-Voice RE27N/D polar response

Text and illustrations are from Electro-Voice RE27N/D Data Sheet, Part No. 534679

Electro-Voice RE27N/D Dan Davis

ESPN Radio’s Dan Davis, a. k. a. “The Duke,” adjusts his RE27.

Comparison chart Vicky and Bill

KFI Associate Producer Vicky Martinez with morning man Bill Handel.

Electro-Voice RE27N/D in its hardshell case Donna Renae
Donna Renae, two-time winner of the Edward R. Murrow Award for broad­cast journalism, as she appears with an RE27 in a military recruit­ment advertisement for the U.S. Navy. These days Ms. Renae is a free­lance reporter for ABC Radio.
KPCS, Pasadena

Radio majors at Pasadena City College.

RE27N/D data sheet

Download the Data Sheet for this mic.

RE27 revised

Download the Revised Data Sheet for this mic.

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