Owners Manual
11
SETTING THE SOUND
Setting the input level
To match your amplier’s input sensitivity (gain) to your source unit’s
output level, we recommend the following procedure:
• Turn the input level control counterclockwise to MIN (minimum).
• Play a dynamic music track through your source unit. Turn the
source unit’s volume control to the 3/4 position.
• Turn the input level control dial clockwise towards MAX until
you hear distortion in the music (it’s no longer clear), then turn it
counterclockwise until the music sounds clear again. Your input
sensitivity is now set.
MIN MAX
LEVEL
Crossover lters
You can adjust your Apex amplier’s lters to suit your listening
preferences and speaker conguration.
The PA454 lets you select no lter (OFF) for a full-range signal, or
engage a high-pass lter (HPF) on the front and rear channels, if
you’re powering speakers and have an independently powered
subwoofer in your system. Slide the switch to choose your desired
crossover point.
OFF 1208060
FRONT – HPF
OFF 1208060
REAR – HPF