OEM Systems 500 User Manual
MODEL 500
OWNERS MANUAL
500W class A/B amplier
S U B W O O F E R
A M P L I F I E R
I M P O R T A N T S A F E T Y I N S T R U C T I O N S
Read these instructions.
Keep these instructions.
Heed all warnings.
Follow all instructions.
Do not use this apparatus near water.
Clean only with dry cloth.
Do not block any ventilation openings. Install in accordance with the manufacturer’s instructions.
Do not install near any heat sources such as radiators, heat registers, stoves, or other apparatus (inlcuding
ampliers) that produce heat.
Do not defeat the safety purpose of the polarized or grounding-type plug. A polarized plug has two blades with
one wider than the other. A grounding type plug has two blades and a third grounding prong. The wide blade
or the third prong are provided for your safety. If the provided plug does not t into your outlet, consult an
electrician for replacement of the obsolete outlet.
Protect the power cord from being walked on or pinched particularly at plugs, convenience receptacles, and the
point where they exit from the apparatus.
Only use attachments/accessories specied by the manufacturer.
Unplug this apparatus during lightning storms or when unused for long periods of time.
Refer all servicing to qualied service personnel. Servicing is required when the apparatus has been damaged
in any way, such as power-supply cord or plug is damaged, liquid has been spilled or objects have fallen into the
apparatus, the apparatus has been exposed to rain or moisture, does not operate normally, or has been dropped.
WARNING: To reduce the risk of re or electric shock, this apparatus should not be exposed to rain or moisture
and objects lled with liquids, such as vases, should not be placed on this apparatus.
To completely disconnect this equipment from the mains, disconnect the power supply cord plug from the
receptacle.
The mains plug of the power supply cord shall remain readily operable.
WARNING: Disconnect power before making any connection to the speaker terminals as they may present a risk of
electrical shock.
W A R N I N G C A U T I O N
The lightning ash with arrowhead
symbol within an equilateral triangle, is intended
to alert the user to the presence of uninsulated
“dangerous voltage “ within the product’s en-
closure that may be of sufcient magnitude to
constitute a risk of electric shock to persons.
The exclamation point within an equilat-
eral triangle is intended to alert the user to the
presence of important operating and maintenance
(servicing) instructions in the literature accompa-
nying the product.
!
MODEL 500 AMPLIFIER
O W N E R ’ S M A N U A L
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MODEL 500
OWNERS MANUAL
C O N T E N T S
I M P O R T A N T S A F E T Y I N S T R U C T I O N S 2
Y O U R M O D E L 5 0 0 S U B W O O F E R A M P L I F I E R 3
F E AT U R E S 4 - 5
C O N N E C T I O N 6 - 7
S E T U P
Tips, Hints, & Suggestions 8 - 9
MODEL 500 Controls 9
Fine Tuning the Controls 9
Other Controls 10
S P E C I F I C AT I O N S 1 0
Y O U R M O D E L 5 0 0 S U B W O O F E R A M P L I F I E R
Thank you for purchasing the Model 500 subwoofer amplier. The Model 500 has been developed to provide
extraordinary power and clarity while also providing a broad range of woofer compatibility.
This manual covers operating procedures, general setup, and technical specications for your Model 500.
We recommend that you thoroughly read through the material contained in this manual before connecting
your amplier. This will ensure that you have a complete understanding of how to properly setup and
operate your subwoofer amplier for optimum performance. Thank you again for choosing the Model
500—we are condent that it will provide you with the extraordinary power and performance necessary to
bring your subwoofer to life.
Box Contents:
Amplier Rack Ears with Screws Power Cord Owners Manual
MODEL 500 AMPLIFIER
O W N E R ’ S M A N U A L
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F E A T U R E S
The MODEL 500 subwoofer amplier was designed to offer performance, value, and exibility. It
incorporates a 500W class A/B amplier utilizing the patented BASH technology for high electrical efciency.
4 independent controls offer exibility to integrate nearly all subwoofers with the main speakers and the
listening environment. (Instructions for ne tuning these controls are described in a later section of this
manual.)
The continuously-variable low pass lter network is adjustable from 40Hz to 120Hz and can be bypassed if it
is preferable to use an external lter or one located in an outboard receiver or processor.
The continuously-variable phase circuit is adjustable from 0 to 180 degrees to nely integrate the subwoofer
with the main listening speakers.
The MODEL 500 incorporates a unique continuously-variable subsonic lter that is adjustable from 20Hz to
35Hz that preserves the ampliers power for only bass frequencies that are reproducible by the subwoofer.
It also helps to protect the subwoofer from being overdriven and can help to reduce distortion by reducing
extreme woofer excursion.
A defeatable Auto-power mode turns the amplier on automatically when a signal is detected. The Autopower mode can be defeated if it is desirable to use a remote AC circuit to control the amplier power.
Dual subwoofer outputs allow multiple woofers to be connected to the same amplier without having to
resort to pigtails, wire nuts, or specialized connectors.
The Model 500 incorporates stereo Line Level inputs and outputs that permit the amplier to be connected
between a preamplier and amplier 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
oor of the entire audio system.
Model 500 amplier shown with rack ears attached.
MODEL 500 AMPLIFIER
O W N E R ’ S M A N U A L
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