The Electro-Voice Model RE27N/D
dynamic cardioid microphone
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 the “rolled-off” position, low-frequency response shall tilt down 6 dB from 250 to 100 Hz. The second filter switch, when in the “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.
Webmaster’s 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.
Text and illustrations are from Electro-Voice RE27N/D Data Sheet, Part No. 534679
ESPN Radio’s Dan Davis, a. k. a. “The Duke,” adjusts his RE27.
KFI Associate Producer Vicky Martinez with morning man Bill Handel.
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.
Radio majors at Pasadena City College.
Download the Data Sheet for this mic.