Good condition, works flawlessly, a few minor paint chips, both the power and ground screws were lost. rated @ 75 x 4 @ 4ohms I believe, does 350rms x 2 bridged, $175obo, open to trades..
The front and rear crossovers are 18dB/octave, continuously variable between 50Hz and 200Hz high pass or low pass, giving you several options in setting up your system.
The new symmetrical power supply allows for better thermal distribution.
The "sum output" jacks on the four-channel amplifiers provide a line level summed output of the right front/right rear and left front/left rear input signals. This output is typically used to drive an external subwoofer amplifier.
RMS Power measured at 12.5 Volts DC:
37.5 Watts x 4 into a 4 Ohm load with less than 0.1% Thd+N
75 Watts x 4 into a 2 Ohm load with less than 0.3% Thd+N
150 Watts bridged x 2 into a 4 Ohm load with less than 0.3% Thd+N
Dynamic Power (IHF-202 Std) measured at 14.4 Volts DC
85 Watts x 4 into a 4 Ohm load
140 Watts x 4 into a 2 Ohm load
280 Watts bridged x 2 into a 4 Ohm load
Signal to Noise Ratio:
> or = 110dB A-Weighted
Damping Factor:
>200
Frequency Response:
20Hz-20kHz±0.25dB
Thunder EQ:
Variable Bass Boost (0-18dB) centered at 40Hz
Crossover:
Variable 50Hz to 200Hz, 18dB/Octave, High Pass or Low Pass Configurable
Dimensions:
13" x 9" x 2" (33cm x 22.8cm x 5cm)
14-1/4" x 9" x 2" (36.2cm x 22.8cm x 5cm) Including IsoFeet
Also Available: Thunder4300XW with high gloss white finish
bump for a very nice amp, back in the day had one of these running a original solobaric round 10 and resolution series components in my standard cab chevy truck. Pounded hard and sounded very clean