OEM Systems A-120 User Manual
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Presence
Loudspeakers for
Todays ARCHITECTURE
A-120
30 0 Watt Powered Subwo o fer
F E A T U R E S
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
ISO 9002 Registered Factory
Welcome Home
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Presence
Loudspeakers for
Todays ARCHITECTURE
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RISQUE DE CHOC ELETRIQUE
NE PAS OUVRIR
300 Watt RMS BASH Amplifier
S P E C I F I C A T I O N S
Frequency Response: 28Hz – 300Hz (System Response)
Crossover Frequency: 40Hz – 120Hz (Low-pass lter with bypass switch)
Phase Adjustment: 0 – 180 degrees (Continuously variable)
Amplier Output Power: 300 watts, with thermal and clipping limiters
Audio Inputs: Summing stereo line level (RCA x2)
LFE (RCA shared with Left input connector)
Speaker level (Stereo 5-way binding post)
Input Impedance: Line Level – 20k ohms, Unbalanced
Speaker Level – 220 ohms
Input Power: 120V 60Hz AC
Input Power Connection: IEC 2-wire receptacle with integral fuse holder
Power (Mains) Fuse: 3A 250V GMA style Fast Blow
Power Modes: Auto signal sensing and always on
Auto Off Delay: ~10 minutes
Dimensions: 15-3/8''W x 17-5/16''H x 14-3/4''D,
(390W x 440H x 375D)mm (without feet)
Weight: 43lbs (19.5kg)
Shipping Dimensions: 21''W x 20''H x 20''D, (533W x 508H x 508D)mm
Shipping Weight: 51lbs (23.2kg)
®
The A-120 is shipped with adjustable feet, (4 spiked and 4 rubber) with tool-less
knurled jam nuts. These feet can be installed in the bottom of the enclosure in
either a 3-point triangular pattern or more traditional 4-point square pattern.
The bottom of the enclosure has 5 threaded inserts arranged to accept either pattern.
(4) Spiked Feet (4) Knurled Lock Nuts (4) Rubber Feet
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