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Compare Alpine KTA-450 Power Pack vs Rockford Fosgate Punch P500X1bd

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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 Punch P500X1bd
Mono subwoofer amplifier — 500 watts RMS x 1 at 1 ohm
  • 150 watts RMS x 1 at 4 ohms (300 watts x 1 at 2 ohms)
  • C.L.E.A.N. gain system includes setup CD and clip lights
  • 1-ohm stable
   
Condition New Stock New Stock
Performance Alpine KTA-450 Power Pack Rockford Fosgate Punch P500X1bd
RMS Power Output (Wt x Channels) 50 x 4
150 x 1
Peak Power Output (Wt x Channels) 100 x 4 N/A
Power at 2 Ohms (Wt x Channels) 45 x 4 300 x 1
Bridged Power (Wt x Channels) 100 x 2 N/A
Minimum Impedance Bridged 4 N/A
Minimum Impedance Unbridged 2 1
Best Frequency Response 15-50k Hz 20-250 Hz
THD at Rated RMS Power 1% 1%
Signal to Noise Ratio 82 dB 80 dB
Input Voltage 14.4v 14.4v
Features Alpine KTA-450 Power Pack Rockford Fosgate Punch P500X1bd
Amplifier Class D BD
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 N/A
High-Pass Slope (dB/octave) 12 dB/octave N/A
Bass Boost No 0-18 dB
Bass Boost Frequency N/A 45 Hz
Fan Cooled No No
Fuse Rating 20 80
Speaker Level Inputs RCA RCA
Preamp Outputs No 1 pair
Width (inches) 7 11-1/8
Height (inches) 1-3/8 2-7/16
Depth (inches) 3-9/16 8-13/16
Parts Warranty 1 Year 1 Year
Labor Warranty 1 Year 1 Year
  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 Punch P500X1bd
Mono subwoofer amplifier — 500 watts RMS x 1 at 1 ohm
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