Electrostatic Headphones (1975)
The Superex PEP-74 Electrostatic Stereophones contain a balanced electrostatic transducer element in each ear cup.
The two elements in the stereophones are factory matched for stereo balance. Each element contains a pair of electrodes, between which is an extremely light metallized mylar diaphragm.
When the electrodes are energized with an audio voltage, and the metallized mylar diaphragm is given a high DC potential, the electrostatic element becomes an extremely widerange linear transducer.
The very light diaphragm is alternately attracted and repelled by each of the electrodes in accordance with the audio signal. Since the diaphragm weighs very little, and does not have to carry any wires, magnets or voice coil, it is able to move in almost exact fidelity to the input signal, without contributing extra resonances or coloration of its own.
Carefully designed damping pads and other acoustic features of the engineered cavity smooth the response and help exclude annoying and disturbing outside sounds.
In order to provide the needed high AC and DC potentials (signal and bias) from the usual audio amplifier output, the Superex CC-79 Control Console is required.
This Control Console, which contains six Solid State devices, takes the audio signal from the Left and Right speaker output terminals of your Stereo Power Amplifier and boosts their voltage to the proper operating levels.
The special regulated high voltage power supply is operated from a portion of the stepped-up audio signal.
Type: electrostatic headphone
Frequency Response: 15Hz to 18kHz
Note: PEP-74 stereophone and CC-79 console
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