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Compare Alpine KTA-450 Power Pack vs Rockford Fosgate Power T400X2ad

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Alpine KTA-450 Power Pack
Compact 4-channel car amplifier — 50 watts RMS x 4
  • 100 watts RMS x 2 bridged at 4 ohms
  • Dynamic Peak Power (DPP) technology adds a burst of power when needed
  • PowerStack bracket included for mounting amp behind Alpine iLX-W650 digital multimedia receiver (#500ILXW650)
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Rockford Fosgate Power T400X2ad
Compact 2-channel car amplifier — 200 watts RMS x 2
  • 400 watts RMS x 1 bridged at 4 ohms
  • C.L.E.A.N. gain system includes clip lights and setup CD
  • variable Punch EQ bass/treble boost
   
Condition New Stock New Stock
Performance Alpine KTA-450 Power Pack Rockford Fosgate Power T400X2ad
RMS Power Output (Wt x Channels) 50 x 4
200 x 2
Peak Power Output (Wt x Channels) 100 x 4 223 x 2
Power at 2 Ohms (Wt x Channels) 45 x 4 200 x 2
Bridged Power (Wt x Channels) 100 x 2 400 x 1
Minimum Impedance Bridged 4 4
Minimum Impedance Unbridged 2 2
Best Frequency Response 15-50k Hz 20-20000 Hz
THD at Rated RMS Power 1% 1%
Signal to Noise Ratio 82 dB 90 dB
Input Voltage 14.4v 14.4v
Features Alpine KTA-450 Power Pack Rockford Fosgate Power T400X2ad
Amplifier Class D A/D
Low-Pass Crossover Frequency No 50-250 Hz
Low-Pass Slope (dB/octave) N/A 12 dB/octave
High-Pass Crossover Frequency Off, 60, 80, 120Hz 50-250 Hz
High-Pass Slope (dB/octave) 12 dB/octave 12 dB/octave
Bass Boost No 0-18 dB
Bass Boost Frequency N/A 45 Hz
Fan Cooled No Yes
Fuse Rating 20 60
Speaker Level Inputs RCA Harness
Preamp Outputs No No
Width (inches) 7 7
Height (inches) 1-3/8 1-5/8
Depth (inches) 3-9/16 4-1/4
Parts Warranty 1 Year 2 Years
Labor Warranty 1 Year 2 Years
  Owner's Manual Owner's Manual
Hands-on Research Hands-on Research
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Alpine KTA-450 Power Pack
Compact 4-channel car amplifier — 50 watts RMS x 4
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Rockford Fosgate Power T400X2ad
Compact 2-channel car amplifier — 200 watts RMS x 2
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