Specifications

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that allows the amp to produce full power into 1
or 2 Ohm loads. This allows a retailer to sell this
amp to a customer with almost any combination
of speaker impedances, and know that they will
get full power from the amplifier.
This new impedance matching circuit operates
invisibly to the installer. No switches need to be
set, no adjustments need to be made. Connect
the speakers and go.
Strappable Power
The DPX1800 and DPX11500 amplifiers are both
strappable. This means, a pair of amplifiers can be
used on a single voice coil to provide additional
power production for extreme SPL levels. A pair
of DPX1800 amplifiers would produce 1,600W
into a 2 or 4 Ohm load, and a pair of DPX11500
would produce 3,000W into a 2 or 4 Ohm load.
Remote Bass Control
The new Clarion DPX1800 and
DPX11500 amplifiers ship with
a Remote Bass Control module.
This allows you to install a subwoofer level con-
trol in the front of your vehicle and control the
low frequency system even when connected to a
source unit (factory or aftermarket) that does not
include a subwoofer output level control.
Adjustable Subsonic Filter
Clarion’s new DPX1800 and
DPX11500 amplifiers feature an
adjustable subsonic filter. This
filter is adjustable from 10Hz to 80Hz using a
potentiometer on the end panel of the amplifier.
When using subwoofers in vented cabinets with
high tuning frequencies (above 35Hz), physi-
cal power handling of the driver may easily be
exceeded. The use of a subsonic filter will limit the
amount of ultra-low frequency information being
passed through to the speaker, as well as reduce
the amount of power the amplifier consumes in
amplifying those low frequencies.
Amplifiers – Technologies
How does Class G work? Think of the new
Dodge Hemi or Cadillac Northstar engines. These
engines have the ability to shut down a number
of cylinders to reduce fuel comsumption and
heat generation. The power supply of a Class G
amplifiers works in exactly the same way. When
you aren’t cranking on the amp, the power supply
rail voltage turns down. The effect, less current is
passed through the output devices, dramatically
reducing wasted power.
The graph below compares the efficiency of
a conventional Class AB 1500W amp to our
DPX11500 1500W amplifier. You can see that
around 350W DPX11500 is ~65% efficient,
whereas the conventional Class AB is merely
25% efficient. This means, that the DPX11500 is
drawing only 37A of current, where the Class AB
amp would be drawing closer to 97A of current.
Automatic Impedance Matching
The Clarion DPX1800 and DPX11500 amplifiers
feature an automatic impedance sensing circuit
Class G Amplifier
Blue - Power Supply Voltage
Yellow - Output Waveform