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The Model 729SR D is an Electro-Voice Model 729SR which has been modified by R. L. Drake for convenient use with Drake Transmitters using VOX or Push-to-Talk.
The Electro-Voice Model 729 is a cardioids microphone of the ceramic type, designed for public address, call and paging systems, dictating machines, home recorders, radio
amateurs, and general communications. The mechanical construction utilized is inherently rugged, affording high protection from mechanical shock damage. The small, slim size makes it easy to handle and gives an attractive appearance.
The Mode1 729 is designed for use under a great variety of conditions and climates. Because of its excellent and uniform polar response, it is especially useful in locations
where ambient noise and reverberation exist. The Model 729 can be used on a floor or desk stand or carried in the hand.
The cardioids characteristic of the Model 729 gives wide angle front pickup but is virtually dead from the rear. A working distance of six inches or more is recommended
for best results. Working too close to a directional microphone gives an unnatural bass response. In addition, the Model 729 provides the following advantages:
- The uniform cardioids characteristic allows nearly double the pickup range (distance from performer or sound source to the microphone) over that of the conventional omni directional microphone for average conditions of reverberation, acoustic feedback and room noise. For public address applications, this pickup range may be increased considerably by proper placement of loudspeakers SO that direct and reflected sound strikes the microphone at the back (dead zone).
- Random room noise and reverberations are reduced by a factor of 67%.
- The microphone may be positioned to cancel or substantially diminish pickup of unwanted sound.
- High output level of the Model 729 enables it to be used with any standard amplifier employing high impedance input.
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Picture : R.L. DRAKE COMPANY |
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