The Thunder5400X has five, count 'em, five channels.
Four of the channels feature an 18dB/octave Butterworth defeatable and continuously variable crossover (50Hz - 200Hz). The front channel has a 40x frequency multiplier (50-200Hz/2000-8000Hz). The fifth channel is a dedicated, class D subwoofer channel, with an 18 dB/octave low-pass crossover (Butterworth, continuously variable, 50-200Hz).
Class D is an important classification in the amplifier world. Class D means, quite simply, more power, used more efficiently. Your power goes to driving speakers, not to heating up the heat sink.
RMS Power measured at 12.5 Volts DC:
-Front & Rear
25 Watts x 4 into a 4 Ohm load with less than 0.1% Thd+N
50 Watts x 4 into a 2 Ohm load with less than 0.3% Thd+N
100 Watts bridged x 2 into a 4 Ohm load with less than 0.3% Thd+N
-Subwoofer
100 Watts RMS into 4 Ohms with less than 0.3% Thd+N
200 Watts RMS into 2 Ohms with less than 0.5% Thd+N
Dynamic Power (IHF-202 Std) measured at 14.4 Volts DC
-Front and Rear
65 Watts x 4 into a 4 Ohm load
125 Watts x 4 into a 2 Ohm load
250 Watts bridged x 2 into a 4 Ohm load
-Subwoofer
150 Watts x 1 into a 4 Ohm load
300 Watts x 1 into a 2 Ohm load
Signal to Noise Ratio:
> or = 100dB A-Weighted
Damping Factor:
>200
Frequency Response:
20Hz-20kHz±0.25dB
Thunder EQ:
Variable Bass Boost (0-18dB) centered at 40Hz
Crossover:
-Front
Variable 50Hz to 200Hz, 18dB/Octave, HP Defeatable with 40X Multiplier
-Rear
Variable 50Hz to 200Hz, 18dB/Octave, HP Defeatable
-Subwoofer
Variable 50Hz to 200Hz, 18dB/Octave, LP
Dimensions:
14"x9"x2" (35.6cm x 22.8cm x 5cm)
15 1/4" Wide Including IsoFeet (36.2cm)
Also Available: Thunder5400XW with high gloss white finish
