Please note that the on/off switch is "stuck" in the ON position.

 

Audio Control Model 520

Equalizer/Speaker Control System/Subsonic Filter

Specifications

Input Sensitivity: 1V (7.5V max)

Output Level: 1V (7.5V max)

Frequency response: 3Hz to 100kHz

Signal to Noise Ratio: 90dB

Total harmonic distortion: 0.4%

Control Range: ± 15dB

Frequency Bands: 36, 60, 120, 1K, 15.5KHz

Dimensions: 2.6 x 12.3 x 5 inches

Weight: 2.5lbs