The Electro-Voice Model RE38N/D cardioid dynamic microphone
Description The Electro-Voice Model RE38N/D is a professional quality dynamic cardioid microphone designed especially for recording, broadcast and sound reinforcement applications requiring smooth tailorable response over a wide frequency range. The extended high-frequency response and the 16-position equalization switch give the RE38N/D great flexibility in obtaining the appropriate sound for any situation. For those applications that require a deeper sound, the microphone has bass-boosting proximity effect when used up close. The amount of this proximity effect can be reduced by adjusting the equalization switch as shown on the frequency response curves. The “brightness” of the high frequency response is also adjustable with the equalization switch.
The RE38N/D incorporates a revolutionary neodymium alloy magnet to provide high sensitivity. Combined with the inherent low noise of a dynamic transducer, the high sensitivity ensures a superior signal-to-noise ratio ready for digital recording and sampling. To further reduce noise, the microphone uses a hum-bucking coil to attenuate from lighting and other sources. The RE38N/D utilizes DynaDamp, an advanced vibration-isolation material, so that a large external shock mount is not required for studio use. DynaDamp is a unique foamed elastomer, specially formulated for vibration control.
The dynamic element of the RE38N/D provides reliable operation in humidity and temperature extremes. An Acoustifoam pop filter reduces both wind noise and P-pop breath sounds. The microphone features a rugged machined aluminum case and Memraflex grille screen designed to withstand all the rigors of professional use.
To solve the problem of microphone placement the RE38N/D features a pivoting yoke configuration. With the unique pivoting yoke, the microphone can be easily adjusted to position the front toward the sound source. The yoke positions are detented to assure the microphone doesn’t shift during usage. This adjustment option in combination with the stand adapter provides a highly flexible mounting system.
Using the Equalization Adjustments The graphic pictorials on the RE38N/D nameplate provide an approximation of the 16 possible far-field (distant) frequency responses which may be selected. This flexibility allows the user to obtain a desired sound character in almost any situation right at the microphone. There are eight low-frequency-tailoring combinations and two high-frequency combinations to yield a total of 16 possible frequency responses built into the RE38N/D. With these options, the user can compensate for proximity effect, low frequency noise and sibilance to get that “right sound.” The control is easy to adjust with a small screwdriver (provided) yet cannot be accidentally changed during use. Experimentation is encouraged with the equalization positions to get the performance best for your application. To aid in determining the frequency response which is right for your application, the typical responses for the positions are shown in Figures 1 through 16.
Switch position 1 yields the flattest frequency response of all the positions to give a clean, uncolored representation of the input sound for signals in the far field. The far field response shown is the output when the sound source is at least 24 inches from the microphone grille. Low-frequency response increases due to proximity effect when the sound source is less than 24 inches from the microphone. This low-frequency response will continue to increase as the sound source moves closer to the microphone. The amount of proximity effect in the output of the microphone can be controlled by placing the microphone at different distances from the sound source and with the equalization choices provided in the RE38N/D. Positions 9 through 16 have the same low frequency shape as the respective positions 1 through 8, the difference being that high-end response is “bright” in positions 9 through 16.
The cardioid polar pattern of the RE38N/D provides excellent isolation at all frequencies. The directional control is smooth in transition from front to back to keep off-axis coloration at a minimum.
Former California Governor Gray Davis using an RE38N/D.
Download the manual for this mic. Eight pages, low rez pdf, 1 megabyte.