Aquatic AV AQ-AD300.2 - Manual (Page 9)

USER GUIDE
9
www.aquaticav.com
AQ-AD300.2
Input gain adjustment
A common misconception about gain adjustment on amplifiers is that “more gain =
more volume”. Actually, it’s not the volume that’s being increased, but rather the ampli-
fier’s sensitivity to the source input. By increasing the gain level, you’re increasing how
sensitive the amplifier is to the signal it receives from the source unit. This is why it’s
important to set the gain properly, rather than simply turning the knob until it’s really
loud.
Gain allows the following nominal operating level adjustments:
Low level input (RCA line-in) - 250mv to 2.5V
High level input (speaker-in) - 500mv to 5V
These voltage levels can accommodate virtually any source unit, as well as just about
anything that has RCA or line-out style outputs.
Setting the gain too high in an attempt to get “more volume” can not only cause
premature distortion, but can also damage your speakers. If your system config
ration results in your gain control being set outside the typical range as indicated
above, call Aquatic AV to resolve the problem.
Crossover mode switch
This switch selects which range of frequencies that the built-in crossover will filter. Each
mode is equipped with 12dB per octave electronic filters for precise frequency attenua-
tion with minimal phase distortion. The options are as follows:
HP (High Pass)
This is the default setting and recommended when driving mid,
high and full range speakers.
LP (Low Pass)
Used when speaker outputs will drive subwoofers, or low range
speakers only.
CONNECTORS DEFINED (CONT.)
HP
LP
HP
LP