Beveridge Cylindrical Sound System

The Beveridge Cylindrical Sound System has been universally acclaimed as the Rolls Royce of loudspeaker systems. Its superb performance capability and engineering superiority are unmatched in sound reproduction history. The BCSS achieves the highest stereo fidelity standart yhe world has ever known. It represents the technological development of a unique full frequency wave front which retains the realistic essense of original sound so exactly that there is no distinguishable difference between reproduced and original sound.For the serious music lover, BCSS fills a long awaited need. The quality of sound achieved is intended to satisfy the most discriminating listener, and provide him with a continuous of pleasure.No special acoustic surfaces are needed to pamper the BCSS. It is equipped with its own direct-coupled, integral amplifier, and is designed to function with any good quality pre-amplifier.For best results, the speakers should be placed across from each other, against opposite walls. However, excellent results have been obtained when spaced more than 6-feet apart along the same wall. Either way, intrusion into the room is minimal.

The Beveridge Model 2 is a very unique loudspeaker and, in the opinion of many, the best speaker we have ever produced. It is a scaled down version of its predecessor the Model One, such that it can fit through doors and hallways. It is an active speaker, driven by its integral OTL tube amplifier, capable of an equivalent output of 1500W. Its full range of 40 Hz - 15 KHz (+/- 2 dB, with useful output at 35 Hz) of 180 degrees cylindrical wave front. For more on cylindrical wavefront sound propagation, combined with the benefits of a monopole design.

“This 6-foot high device consolidated the entire frequency range into a vertical line source, and uniformly disperses it over a horizontal pattern, 180 degrees wide. The beaming characteristics of the high frequencies are ingeniously translated into the same dispersive pattern as the low frequencies, creating a perfectly balanced cylindrical sound wave front. The end result is flawless stereo fidelity in the home, and that, says Harold Beveridge with a grin, is what the last quarter of a century was all about as far as he was concerned.”

An integral amplifier was located in the base and did require a cooling fan. Electrostatic speakers need high voltages to drive the diaphragm. The amplifier could deliver peak outputs greater than 1500 volt amperes into the speaker’s capacitive load of 5000 pf. Response was claimed to be plus or minus 2 dB from 40 to 15kHz and over a wide angle of 180 degrees.
The lowest useable output was 35 Hz. The system was 6-1/2 feet tall, 2 feet wide and depth was 16 inches at the center with 10 inches at the sides.