Infinity Reference 475a vs Rockford Fosgate Prime R250X1

 
Infinity Reference 475a
In Stock 
$149.99
  • 90 watts RMS x 4 at 2 ohms
  • 180 watts RMS x 2 in bridged mode
  • variable high- and low-pass filters
Add to Cart
Rockford Fosgate Prime R250X1
In Stock 
$159.99
  • 150 watts RMS x 1 at 4 ohms
  • variable low-pass filter and bass boost
  • preamp and speaker-level inputs
Add to Cart

Product Features

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Condition New StockNew Stock
Performance Infinity Reference 475aRockford Fosgate Prime R250X1
RMS Power Output (Wt x Channels)
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75 x 4
150 x 1
Peak Power Output (Wt x Channels)
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117 x 4N/A
Power at 2 Ohms (Wt x Channels)
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90 x 4250 x 1
Bridged Power (Wt x Channels)
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180 x 2N/A
Minimum Impedance Bridged
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4N/A
Minimum Impedance Unbridged
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22
Best Frequency Response
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10-100k Hz20-250 Hz
THD at Rated RMS Power
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1%1%
Signal to Noise Ratio
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85 dB80 dB
Input Voltage
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14.4v14.4v
Features Infinity Reference 475aRockford Fosgate Prime R250X1
Amplifier Class
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ABAB
Low-Pass Crossover Frequency
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32-320 Hz50-250 Hz
Low-Pass Slope (dB/octave)
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12 dB12 dB/octave
High-Pass Crossover Frequency
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32-320 HzN/A
High-Pass Slope (dB/octave)
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12 dBN/A
Bass Boost
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0-6 dB0-12 dB
Bass Boost Frequency
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50 Hz45 Hz
Fan Cooled
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NoNo
Fuse Rating
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7030
Speaker Level Inputs
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NoHarness
Preamp Outputs
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1 pair1 pair
Width (inches)
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911-1/4
Height (inches)
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2-11/162
Depth (inches)
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14-3/47-3/8
Parts Warranty
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1 Year1 Year
Labor Warranty
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1 Year1 Year
  Owner's ManualOwner's Manual
 Hands-on ResearchHands-on Research
 
Infinity Reference 475a
In Stock 
$149.99
Add to Cart
Rockford Fosgate Prime R250X1
In Stock 
$159.99
Add to Cart

Video: Car Amplifier PowerWe describe the basics of deciding how much power an amplifier should have when you're trying to match it to your speakers or subwoofers.

Video: Car Amplifier ChannelsOne of the first steps in choosing an amplifier for your car audio system is to decide how you intend to use the amplifier, and thus how many channels it should have. This short video gives you a quick overview to help answer that question.