User Guide
A-120
30 0 Watt Powered Subwoofer
The A-120 subwoofer was designed for exceptional
performance and value. It features a 12'' extra-long
excursion woofer with high Bl motor. The bass reex
enclosure with ared port ensures extended bass
response and high acoustic efciency.
The woofer is driven with an integral 300W class A/B
amplier utilizing the patented BASH technology for high
electrical efciency.
The integral rear-mounted 300 watt amplier includes level, phase
(continuously variable 0-180°), and crossover control to contour the subwoofer’s
output to blend with virtually all loudspeakers and room environments.
The integral low pass crossover network is continuously-variable from 40Hz to
120Hz and can be bypassed if it is preferable to use an external crossover located
in an outboard receiver or processor.
The A-120’s integral amplier incorporates a defeatable signal-sensing circuit that
automatically powers up the amplier when a signal is detected.
A double-insulated isolated-ground electrical supply prevents electrical ground
loops and reduces the noise oor of the entire audio system.
12'' E X T R A L O N G – T H R O W Heavy Duty Driver
Loudspeakers for
Todays ARCHITECTURE
Presence
®
ISO 9002 Registered Factory
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