Massive Audio NX3 - Amplifier Panel Layout Overview; Hi-Pass Filter (Full Range); X-Over Mode and Frequency Control (Full Range); Power Indicator

16. Q-control (available On NX3 Only)
This knob adjusts the curve of the bassboost.Turning this knob
clock wise will make the boosted frequency narrow and sharp. Turning
this knob counter clockwise will extend the boosted frequency range.
By combining the bassboost frequency and the bassboost level you can
achieve a perfect bass response that matches your system.
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