Alpine KTP-445U Power Pack vs Alpine MRX-M55

 
Alpine KTP-445U Power Pack

In Stock

(111)

$149.99
  • runs off same power circuit as receiver (must be 15-amp or more)
  • compact amplifier with universal plug for in-dash receivers
  • 45 watts x 4 at 4 ohms
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Alpine MRX-M55

In Stock

(22)

$179.99
  • 400 watts RMS x 1 at 1 ohm
  • variable low-pass and subsonic filters
  • variable bass boost
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Product Features

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Condition New StockNew Stock
Performance Alpine KTP-445U Power PackAlpine MRX-M55
RMS Power Output (Wt x Channels)
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45 x 4
350 x 1
Peak Power Output (Wt x Channels)
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90 x 41100 x 1
Power at 2 Ohms (Wt x Channels)
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45 x 4550 x 1
Bridged Power (Wt x Channels)
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90 x 2N/A x
Minimum Impedance Bridged
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4---
Minimum Impedance Unbridged
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21
Best Frequency Response
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20-20k Hz5-400 Hz Hz
THD at Rated RMS Power
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1%1%
Signal to Noise Ratio
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82 dB90 dB
Input Voltage
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14.4v14.4v
Features Alpine KTP-445U Power PackAlpine MRX-M55
Amplifier Class
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DD
Low-Pass Crossover Frequency
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N/A50-400 Hz
Low-Pass Slope (dB/octave)
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N/A24 dB/oct
High-Pass Crossover Frequency
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60, 80, 120HzN/A
High-Pass Slope (dB/octave)
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12 dB/octN/A
Bass Boost
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No0-12 dB
Bass Boost Frequency
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N/A50 Hz
Fan Cooled
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NoNo
Fuse Rating
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1560
Speaker Level Inputs
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HarnessHarness
Preamp Outputs
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No1 pair
Width (inches)
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7-7/89-15/16
Height (inches)
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1-1/22-5/16
Depth (inches)
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2-9/169-1/16
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
 
Alpine KTP-445U Power Pack

In Stock

(111)

$149.99
Add to Cart
Alpine MRX-M55

In Stock

(22)

$179.99
Add to Cart

1.888.955.6000

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