OEM Systems 300 Watt Powered Subwoofer A-120 User Manual
A-120, Presence, Welcome home
300 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 reflex
enclosure with flared port ensures extended bass
response and high acoustic efficiency.
The woofer is driven with an integral 300W class A/B
amplifier utilizing the patented BASH technology for high
The integral rear-mounted 300 watt amplifier 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 amplifier incorporates a defeatable signal-sensing circuit that
automatically powers up the amplifier when a signal is detected.
A double-insulated isolated-ground electrical supply prevents electrical ground
loops and reduces the noise floor of the entire audio system.
12'' E X T R A L O N G – T H R O W Heavy Duty Driver
ISO 9002 Registered Factory
F E A T U R E S