For extra BOOM from your system, we’ve developed the QBASS™ bass control circuit. The QBASS™ control is located to the left of the crossover switches and allows you to add up to 12dB of boost centered at 40Hz by rotating the control clockwise.
CAUTION! QBASS™ should only be used in systems
with strong subwoofers. 12dB is a lot of bass boost and could
damage full range speakers.
This circuitry is capable of eliminating noise radiated into your signal cables by up to 40dB. This is equivalent to a noise reduction of approximately one hundred times what the noise level would be without this circuitry. It provides all the benefits of a true ‘balanced’ line without the need of any special cables (see diagram below). This type of input works with any conventional RCA cable.
13