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500W CLASS A/B AMPLIFIER
The MODEL 500 subwoofer
amplifier was designed to
offer
performance,
value,
and flexibility. It incorporates
a 500W class A/B amplifier
utilizing the patented BASH
technology for high electrical
efficiency.
Four independent controls offer
flexibility to integrate nearly all
subwoofers with the main speakers
and the listening environment. The
continuously-variable low pass filter
network is adjustable from 40 to 120Hz
and can be bypassed if it is preferable to
use an external filter or one located in an outboard receiver or processor. The continuously-variable
phase circuit is adjustable from 0 to 180 degrees to finely integrate the subwoofer with the main
listening speakers.
The MODEL 500 incorporates a unique subsonic filter adjustable from 20 – 35Hz that limits/extends
power output to the lowest frequency the subwoofer driver is capable of reproducing. This maximizes
performance, helps to protect the subwoofer driver from being overdriven and will reduce distortion
by limiting extreme subwoofer driver excursions.
A defeatable Auto-power mode turns the amplifier on automatically when a signal is detected.
The Auto-power mode can be defeated if it is desirable to use a remote AC circuit to control the
amplifier (on/off) power.
Dual subwoofer outputs allow multiple woofers to be connected to the same amplifier without
having to resort to pigtails, wire nuts, or specialized connectors.
The MODEL 500 incorporates stereo Line-Level inputs and outputs that permit the
amplifier to be connected between a preamplifier and amplifier without the need for
Y-connectors. The Line-Level inputs also incorporate a buffered internal summing network so
that a mono signal is derived from the left and right channels while maintaining the stereo signal
integrity for the main stereo speakers. A double-insulated, isolated-ground electrical supply
prevents electrical ground loops and reduces the noise floor of the entire audio system.
5 Year Parts & Labor Limited Warranty
ISO 9001 Registered Factory
CEDIA
SUBWOOFER AMPLIFIER
CUSTOM
ELECTRONIC
DESIGN &
INSTALLATION
ASSOCIATION
®
S P E C I F I C AT I O N S
Frequency Response: Crossover Frequency:
Phase Adjustment:
Amplifier Output Power:
Distortion: Audio Inputs:
Input Impedance:
Input Power: Input Power Connection:
Power (Mains) Fuse:
Power Modes:
Auto Off Delay:
Dimensions (with feet, without ears): Weight:
Shipping Dimensions:
Shipping Weight:
20 – 300Hz
40 – 120Hz (Low-pass filter with bypass switch)
0 – 180 degrees (Continuously variable)
500 watts RMS into 4 ohms, with thermal and clipping limiters
250 watts RMS into 8 ohms, with thermal and clipping limiters
Less than 0.2% at rated power
Summing stereo line level (RCA x2)
LFE (RCA shared with Left input connector)
Line-Level – 20k ohms, Unbalanced
120V 60Hz AC
IEC 2-wire receptacle with integral fuse holder
5A 250V T5AL (5x20mm) style Slow Blow
Auto signal sensing and always on
~10 minutes
16⅞"W x 3⅞"H x 14¾"D, (429W x 98H x 375D)mm
15lbs (6.8kg)
21½"W x 8½"H x 17½"D, (550W x 220H x 450D)mm
20lbs (9.1kg)
Model 500 Amplifier shown with Rack Ears (included)
Rev. C
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