system 6


A semi full range electrostatic speaker, employing the Beveridge acoustic lens system - the last model designed and built by Harold Beveridge. Resembling the Model 3 on a somewhat larger scale, the 6 is also a passive transducer, allowing the user the choice of his own amplification. It improves on the Model 3, however, by adding two additional external sub-woofers (similar to Model 2 SW-x), housed in their own independent, circular enclosures. This reduces coloration and unwanted resonances within the main ES cabinet.

The cylindrical front waveform is created by means of the acoustic lens, coupled with the vertical narrow line source at the front, allowing a 90 degree cylindrical-waveform dispersion. The Model 6 employs four of the same circuit board type transducers used in the Model 5. As with all Beveridge speakers, the ES panel's rear radiation is totally absorbed within the enclosure, thus eliminating any interference or cancellation by rear-generated waves.

The Model 6 employs a 12" woofer/channel, covering the lower audio range (33 - 200 Hz). A built in, bypassable cross-over network allows for a variety of bi-amplification modes, but the ES units are protected at all times by a fixed, non-passable high quality capacitor.

Note: Around 1980, the design, and possibly a limited production of, a "half amp" had begun, with the view to offering Model 6 customers a direct drive OTL amplifier. This was essentially a cut-down version of the Model 2 amplifier (employing only a pair of tubes and operating at half the voltage). Only a limited number of units were ever produced and sold, however, and the effort was aborted.


promotion literature


California Audio Technology

SPECIFICATIONS

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