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JBL GX-A3001

Mono subwoofer amplifier — 300 watts RMS at 2 ohms

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Our take on the JBL GX-A3001

by Buck Pomerantz
JBL

My system has plenty of power. Who needs an amp?

You might think you don't need an amp because you have a 400-watt system in your car, or because your new stereo puts out 50 watts a channel. But those are peak wattage ratings, which may boil down to 15 or 20 watts per channel, using the more realistic RMS rating. An amp sends your speakers the power they need to deliver your music with clarity and impact, whether you're using factory speakers or high-performance components. And low-frequency reproduction requires lots of power, so an amp is an absolute must if you're adding a sub to your system.

Power your bass

JBL has been designing and building sound systems for decades, so they know how to deliver your bass. Their GX-A3001 mono subwoofer amplifier can send up to 300 watts RMS to your sub. You can use the variable low-pass filter to clean up the bass tone, while the bass boost adds some punch when you need it.

A cast-aluminum heat sink shunts off heat generated when you're pushing the amp, so you can jam out without worrying.The amp features preamp and speaker-level inputs, so it'll connect to just about any system.

Highlights:

  • mono subwoofer amplifier
  • 200 watts RMS x 1 at 4 ohms (300 watts RMS x 1 at 2 ohms)
  • CEA-2006 compliant
  • frequency response: 10-320 Hz
  • Class D amp technology
  • variable low-pass filter (32-320 Hz, 12 dB/octave)
  • variable bass boost (0-12 dB at 45 Hz)
  • preamp and speaker-level inputs
  • fuse rating: 20A x 2
  • 8-gauge power and ground leads recommended — wiring and hardware not included with amplifier
  • 11-7/16"W x 2-1/16"H x 8-1/8"D
  • warranty: 1 year
  • Our 60-day money-back guarantee
Preliminary info from the manufacturer
Features and Specs
Performance
RMS Power Output (Watts x Channels)
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200 x 1
Peak Power Output (Watts x Channels)
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---
Power at 2 Ohms (Watts x Channels)
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300 x 1
Bridged Power (Watts x Channels)
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---
Minimum Impedance Bridged
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---
Minimum Impedance Unbridged
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2
Best Frequency Response
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10-320 Hz
THD at Rated RMS Power
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---
Signal to Noise Ratio
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---
Input Voltage
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---
Features
Amplifier Class
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D
Low-Pass Crossover Frequency
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32-320 Hz
Low-Pass Slope (dB/octave)
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---
High-Pass Crossover Frequency
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---
High-Pass Slope (dB/octave)
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---
Bass Boost
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0-12 dB
Bass Boost Frequency
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45 Hz
Fan Cooled
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---
Fuse Rating
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40
Speaker Level Inputs
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Harness
Preamp Outputs
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No
Width (inches)
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11-7/16
Height (inches)
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2-1/16
Depth (inches)
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8-1/8
Parts Warranty
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1 Year
Labor Warranty
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1 Year
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For a more in-depth review and enhanced detailed information on the JBL GX-A3001, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_109GXA3001/JBL-GX-A3001.html ).

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