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Car Amplifiers Comparison

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Rockford Fosgate R2-300X4
Prime Series 4-channel car amplifier — 50 watts RMS x 4
In stock
$219.99
  • 150 watts RMS x 2 bridged
  • variable high- and low-pass filters
  • preamp and speaker-level inputs
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Top Seller
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 Prime R400-4D
4-channel car amplifier — 75 watts RMS x 4
Low stock
42 reviews
$219.99
  • 200 watts RMS x 2 bridged
  • variable high- and low-pass filters
  • preamp inputs and outputs
     
Condition New Stock New Stock New Stock
Performance Rockford Fosgate R2-300X4 Alpine KTA-450 Power Pack Rockford Fosgate Prime R400-4D
RMS Power Output (Wt x Channels) 50 x 4
50 x 4
75 x 4
Peak Power Output (Wt x Channels) N/A 100 x 4 ---
Power at 2 Ohms (Wt x Channels) 75 x 4 45 x 4 100 x 4
Bridged Power (Wt x Channels) 150 x 2 100 x 2 200 x 2
Minimum Impedance Bridged 4 4 4
Minimum Impedance Unbridged 2 2 2
Best Frequency Response 20-20k Hz 15-50k Hz 20-20k Hz
THD at Rated RMS Power 1% 1% 1%
Signal to Noise Ratio 70 dB 82 dB 90 dB
Input Voltage 14.4v 14.4v 14.4v
Features Rockford Fosgate R2-300X4 Alpine KTA-450 Power Pack Rockford Fosgate Prime R400-4D
Amplifier Class D D D
Low-Pass Crossover Frequency 50-250 Hz No 50-250 Hz
Low-Pass Slope (dB/octave) 12 dB/octave N/A 12 dB/oct
High-Pass Crossover Frequency 50-250 Hz Off, 60, 80, 120Hz 50-250 Hz
High-Pass Slope (dB/octave) 12 dB/octave 12 dB/octave 12 dB/oct
Bass Boost No No 0-18 dB
Bass Boost Frequency N/A N/A 45 Hz
Fan Cooled No No No
Fuse Rating 60 20 40
Speaker Level Inputs Harness RCA No
Preamp Outputs 1 pair No 1 pair
Width (inches) 10-1/16 7 9-1/8
Height (inches) 2 1-3/8 2
Depth (inches) 7-3/4 3-9/16 7-3/8
Parts Warranty 1 Year 1 Year 1 Year
Labor Warranty 1 Year 1 Year 1 Year
  Owner's Manual Owner's Manual Owner's Manual
Hands-on Research Hands-on Research Hands-on Research
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Rockford Fosgate R2-300X4
Prime Series 4-channel car amplifier — 50 watts RMS x 4
In stock
$219.99
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Top Seller
Alpine KTA-450 Power Pack
Compact 4-channel car amplifier — 50 watts RMS x 4
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Rockford Fosgate Prime R400-4D
4-channel car amplifier — 75 watts RMS x 4
Low stock
42 reviews
$219.99
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