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OPERATION/INSTALLATION MANUAL
High-Pass/Low-Pass Filter Controls
The APA2102 has a 12 dB per octave electronic filter for precise frequency
attenuation with minimal phase distortion. The steep crossover slope keeps
midrange tones out of the subwoofer and thereby eliminates an unnatural
"nasal" tone quality in the audio system. The filter is activated by sliding
the FILTER/BASS EXTENDER switch to either HP or LP. It is fully
adjustable between 50 and 200 Hz (via the FREQ control) for a wide range
of crossover points. Use this feature, along with your speaker
manufacturer's recommended crossover frequencies, to quickly design a
more advanced system (see Applications starting on page 6).
Stereo/Mono Mode Switch
The MODE switch provides selection of stereo or mono operation.
Connections for Speakers/Power
The APA21Q2's rear panel (see Figure 3) contains speaker and power
connections and an external fuse.
Speaker Connections
The speaker terminals are gold-plated with polarity markings for CH 1,
CH 2, and MONO speaker connections.
Power Connections
The power connections are also gold-plated and are labeled REMOTE (for
remote turn-on via source unit), GROUND, and BATTERY (+12 Vdc). An
automotive-type 25 A fuse protects the amplifier circuit.
Description ♦ 5
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