System II SW-1 is a full range electrostatic speaker employing the Beveridge acoustic lens system. It is driven by a built-in, dedicated OTL tube power amplifier of high quality. The cylindrical front waveform is created by means of a vertical narrow line source at the front. As with all Beveridge speakers, the rear panel radiation is totally absorbed within the enclosure, thus no driver created cancellation waves are present in the listening room.

The subwoofers are driven by their own amplifiers housed in the cabinets.

driver:             6" electrostatic panel driver
frequency response:   40-15KHz (2db)
sensitivity:
amplification:  ES drivenn by built-in OTL tube
                     amp./channel; subwoofers driven
                     by own amps.
cross-over:    70/100Hz
power supply: 115/60Hz - 240VAC/50Hz
dimensions:    ES - 6"
                    subwoofers -
weight:           ES:
                     subwoofers: