Inputs and Outputs
Patented PWM MOSFET Switching Power
Supply: This type of power supply is used for maximum power output and
Adaptive Class D Technology: While
typical Class D amps tend to generate high frequency energy that must be
filtered to prevent harmonic interference in the FM radio frequency range,
Adaptive Class D Technology directs the amp's switching energy away from FM
radio ranges as the amp's load and output increases. This improves the amp's
overall signal-to-noise ratio and eliminates interference generated by more
common Class D amps.
Pure N-Channel Design: The pure
N-channel design is more linear than typical N-Channel designs, so the speaker
you connect to the amplifier will be better controlled. The signal travels
through fewer parts so the signal-to-noise ratio is enhanced, the power rating
is better, and the amp runs louder, longer.
Low Impedance, High Power
Transformers: These provide more power and produce less heat.
Compression Circuit: The
amplifier's compression circuit prevents the amplifier from clipping, even at
high volume levels. The circuit protects the speakers against the potential
damage that can occur during dynamic musical passages. The circuit can be turned
on or off, however damage to speakers may occur when the circuit is in the
Smart-Engage: If you're
planning to keep your factory radio and use the amp's speaker level inputs,
Smart-Engage senses the source voltage from the factory radio, meaning you won't
have to run a separate turn-on lead and won't necessarily have to remove the
factory radio during installation.
Real-time Computerized Protection
Circuit: The protection circuit makes sure you amp is operating within safe
parameters for maximum power and protection.
Turn-on/Turn-off: A circuit that prevents turn-on/turn-off "thump"
is included to eliminate turn-on/off noise.
Iso-Feet: Four rubber Iso-Feet
are attached to the amplifier. The rubber feet let you mount the amp securely,
while preventing the mounting screws from coming into contact with the amp's
RCA Outputs: In addition to the
set of preamp inputs, there is a set of buffered RCA preamp outputs. The left
and right outputs are summed, providing a mono signal, plus the signal is
low-pass only, filtered by the amplifier's built-in crossover. The outputs allow
you to daisy-chain one bass amplifier to another. Also, the RCA output jacks
allow for multiple bass amplifiers to be level controlled using one EBC (sold
EBC (Electronic Bass Control) 2: This
amplifier includes an Electronic Bass Control Port (RJ-11 jack) that will accept
the cable from an optional EBC. When an EBC is connected, you can adjust the bass level from the driver's seat to overcome noise and other interference. With EBC 2 multiple compatible amps can
Intelligent Surface Mount
Technology: Features substantially shorter internal and external lead
lengths, reducing stray capacitance and inductance, which results in cleaner and
more accurate musical reproduction with less noise interference.
Thunder EQ: Thunder EQ is a
continuously variable Bass Boost (0-18 dB) centered at 40 Hz.
This amplifier is equipped with a 24dB/octave, low-pass crossover that is always
active. There is a crossover frequency control, continuously variable from 40 Hz
to 200 Hz, that allows you to dial in the low-pass cut-off frequency of your
choice. Note: The built-in crossover also filters the amplifier's
terminals are nickel-plated, heavy-duty screw terminal connectors.
Performance Certificate: MTX
tests each amplifier, and the technician records the "actual" power
output on the Certified Performance Certificate included with each amp. The amp
must meet or exceed the rated specification in order to leave the factory.
Dynamic Power Measured
at 14.4 Volts DC:
- 400 Watts x 1 into a 4 Ohm load
- 800 Watts x 1 into a 2 Ohm load
RMS Power Measured at 12.5 Volts
- 250 Watts x 1 into a 4 Ohm load
- 500 Watts x 1 into a 2 Ohm load
Left Side of Amplifier:
- Line In: RCA
- Line Out: RCA
- EBC Port: a telephone-style
(RJ-11) jack for an optional EBC (Electronic Bass Control)
- Speaker Level Input: a
4-pin input for use with the included speaker-level input harness
Right Side of Amplifier:
- +BATT: (power): screw
terminal (terminal is 0.54" wide)
- REM (remote turn-on):
(terminal is 0.34" wide)
- GND (ground): screw
terminal (terminal is 0.54" wide)
- Speaker Terminals: there are
two sets of terminals (labeled Speaker 1 and Speaker 2), but they are wired
internally in parallel and they provide mono output (terminals are
This amplifier uses three 25-amp fuses, so its total fuse rating is 75 amps. The
Streetwires 4-gauge amp wiring kits (item #s: 211PS4B, 211PS4R, 211PS4BI,
211PS4RI) include an 80-amp fuse, which will accommodate the amp's fuse rating.
Other 4-gauge amp wiring kits carried by Crutchfield include a 60-amp fuse. If
you are using a 4-gauge amp wiring kit with a fuse rated less than 75 amps, the
fuse should be replaced with an 80-amp AGU fuse (item #211AGU80).