Precision Power PCX1250 - Manual (Page 3)

CAUTION: QBASS ™ should only be used in systems with a strong subwoofer
section. +12dB is a large amount of bass boost and may damage your speakers
if abused.
On the PCX 1250 amplifier, we offer tremendous control of your bass with
QBASS™ . On the front end panel of your PCX 1250 you will find the QBASS™
level control. Adjust the level control clockwise for up to 12 dB of boost at a
factory preset frequency of 40Hz with a Q-factor of 2
18 3