Inputs and Outputs Notes
Power Supply: The MTX Thunder
1501D features a patented PWM MOSFET Switching power supply 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
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.
Transformers: This unit
utilizes low-impedance, high-power transformers to 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
Circuit: The real-time computerized protection circuit makes sure you amp is operating within safe
parameters for maximum power and protection.
Turn-on/Turn-off: To prevent
damage to the amplifier or connected speakers, the amp includes a circuit that
provides an acoustically seamless turn on/turn off. The circuit virtually
eliminates the loud "thump" that normally occurs when an amplifier is powered up
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
chassis. The Iso-Feet isolate vibrations which can be detrimental to performance
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.
Phase Switch: The Thunder 1501D
includes a two-way Phase Switch (0°
which allows you to invert the phase by 180°
at the output. This switch does not affect the phase of the RCA line outputs.
This amplifier is equipped with a 24dB/octave, low-pass filter that is always
active. There is a frequency control knob that allows you to dial in the low-pass cut-off frequency of your
choice between 40Hz to 200Hz. Note: The built-in crossover also filters the amplifier's
Performance Certificate: MTX
tests each amplifier it manufactures, and the technician records the actual
specifications on the Amplifier Performance Certificate included with each amp. The amp
must meet or exceed the rated specification in order to leave the factory.
Note: The specific amplifier reviewed by Crutchfield produced 1142 watts at
2 ohms with a 12.5 volts input, a 110dB Signal-to-Noise ratio and 0.887% THD.
The minimum specification is 1000 watts, 100dB S/N, and 2% THD.
Dynamic Power Measured
at 14.4 Volts DC:
- 750 Watts x 1 into a 4 Ohm load
1500 Watts x 1 into a 2 Ohm load
RMS Power Measured at 12.5 Volts
- 500 Watts x 1 into a 4 Ohm load
1000 Watts x 1 into a 2 Ohm load
Inputs and Outputs Notes
Power/Ground Terminals: The
Thunder 1501D features heavy-duty, nickel-plated set-screw terminals for power
and ground. These set screw terminals can accept up to 1/0-gauge bare wire. A
Phillips-head screwdriver is required for tightening the set screws.
Speaker Terminals: The amp
includes a nickel-plated terminal strip with connections for two speakers. Each
screw terminal is 0.343" wide and can accept up to 8-gauge bare wire or spade
and ring terminals. Both speaker terminals output a mono signal, and are wired
internally in parallel. Note: This amp is not recommended for loads below
EBC Port: The amp has a female
RJ-11 jack to accept the optional Electronic Bass Control (item # 236EBC). This
jack is compatible with the EBC (for single amplifiers) or the EBC 2 (for
RCA Outputs: The Thunder 1501D
includes 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 an optional Electronic Bass Control 2
(EBC 2) module.
This amplifier does not include a built-in fuse. Minimum recommendations include
a wire size of 1/0-gauge and a fuse rated at 150 amps. The Streetwires PS00R
amplifier wiring kit (item # 211PS00R) contains 1/0-gauge power and ground wire
with a 200-amp ANL fuse and turn-on lead. You will also need a stereo RCA patch
cable and speaker wire to complete the installation.
Battery/Alternator: Because of
the high current draw of the amplifier, MTX cautions that the upgrading of the
vehicle's factory battery and alternator may be required.