Description
Pre-Owned piece. The Microphone shows signs of use and of age, the microphone is likely from the 1950’s, though the exact year is unknown.
Model 737A “Monoplex” is a high output Super-Cardioid Crystal Microphone employing the patented Shure “Uniphase” principle.
The “Monoplex” contains a diaphragm-type element combined with acoustical networks which cause cancellation of sound pressures for sounds incident from the rear. The crystal is “Metal Seal” covered to withstand adverse climatic conditions. The case is pivoted at the rear and may be conveniently pointed in the direction of the desired sound, or pointed upwards for non-directional horizontal plane pickup. The rich satin-chrome case is designed for improved acoustical performance and modern appearance.
Applications:
The true wide-range uni-directional characteristic of the “Monoplex” creates an easy solution to the feedback problem in reverberant locations, facilitates orchestral placement, permits good utilization of space in small recording or broadcasting studios, and allows a practically complete exclusion of unwanted noises.
By pivoting the microphone upwards, a 360° non-directional horizontal plane characteristic is obtained which is useful for group or roundtable pickup.
Frequency response is from 60 to 10,000 cycles over a wide range angle at the front, yet practically unaffected by sound approaching from the rear. Rear response is down approximately 15 db permitting more volume without feedback which simplifies microphone and speaker placement and greatly improves systems using conventional microphones.
Specifications:
Voltage Sensitivity: 2.25 millivolts per microbar at end of 15 foot (4.6 m) cable across 1 to 5 megohms. This is equivalent to 53 db below 1 volt per microbar.
