Powerful and compact 415 Watt mono amplifier with built-in variable cross-over

£59.99 - £129.99
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Number of Channels/Type 2 Channels 4 Channels Mono / Subwoofer
4-Ohm Power Output 60W rms x 2* 60W rms x 4* 200W rms x 1*
2-Ohm Power Output 85W rms x 2* 85W rms x 4* 300W rms x 1*
Bridged Power Output 170W x 1 into 4 ohms* 170W x 2 into 4 ohms* 170W x 2 into 4 ohms*
Total Peak Power Output 280W 435W 415W
Signal-to-Noise Ratio 93dB
(ref rated output @ 4ohms)
(ref rated output @ 4ohms)
(ref rated output @ 4ohms)
Frequency Response 20Hz - 20kHz ±1dB 20Hz - 20kHz ±1dB 10Hz - 320Hz
Input Sensitivity 200mV-20V 200mV-20V 100mV-20V
Variable Electronic Crossover Yes Yes Yes
Variable Bass Boost Yes Yes Yes
Input Connections High & low-level (RCA) High & low-level (RCA) High & low-level (RCA)
Input Connections High & low-level (RCA) High & low-level (RCA) High & low-level (RCA)
Signal Output Connections No L & R line level (summed) No
Dimensions (L x W x H) 2-1/16" x 7-13/16" x 8-1/8"
(52mm x 198mm x 206mm)
2-1/16" x 11-13/16" x 8-1/8"
(52mm x 300mm x 206mm)
2-1/16" x 11-7/16" x 8-1/8"
(52mm x 291mm x 206mm)
* <1.0% THD + N
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Powerful and Compact 415-Watt Subwoofer Amplifier

A 415-watt mono subwoofer amplifier with on-board variable electronic crossover, the GX-A3001 features a compact footprint of just 2-1/16" (52mm) high, 9-1/8" (206mm) wide and 11 7/16" (291mm) deep. This tiny powerhouse includes a cast-aluminum heat sink, built-in electronic crossover networks, and enough power to drive your woofers to distraction. With almost seven decades of experience in bringing live music to life, JBL® has adapted many of our professional technologies for use in our car audio systems, transforming your road-going listening experience with new levels of power and clarity. Whether you’re looking at dramatically improving the sound of your factory installed audio system or designing a world-class competitive sound system from the chassis up, your JBL car audio retailer has everything you’re looking for. Crank up both the volume and the fidelity of your factory-installed sound system with the new GX Series amplifiers. Ranging from a compact stereo amplifier with enough power to drive the most demanding speaker systems, to the thunderous GX-A3001 with well over 400 watts of raw bass power to shake the ground, GX amplifiers cover the range at surprisingly affordable prices. There’s nothing wrong with your existing audio system that real power can’t fix, and GX series amps make adding that power easy. Setting up a sound system to fill your car takes not only great gear, but the ability to make all the components work together as an integrated whole. On board active crossovers and separate line- and speaker-level inputs make it easy to tie the new GX amps to the rest of your system, and carefully engineered Bass Boost circuits make it easy to get the sound you crave, whether you’re upgrading a factory system or building from scratch. For years, JBL’s engineers have made the gear that experts have relied on. Now, we also make gear that helps you perform like an expert.

Item# GX-A3001_

General Specifications

Number of Channels Mono / Subwoofer

Audio Specifications

Frequency Response 10Hz-320Hz
2-Ohm Power Output 300 Watts RMS x 1 channel
Variable Bass Boost 0 to + 12dB @45Hz
Signal-to-Noise Ratio 98dB
Input Sensitivity 100mv-20V
Total Peak Power Output 415W
4-Ohm Power Output 200 Watts RMS x 1 channel
THD + N less than 1%


Height (in) 2-1/16
Height (mm) 52
Depth (mm) 291
Width (mm) 206
Depth (in) 11-7/16
Width (in) 8-1/8
  • 1 x GX-A3001
  • User Manual

Search Result For ""

Can this amp move a sub 250 rms 4ohms??

Asked by: Cescareno08
The sub is a ROCKFORD P1S4 250 RMS
Answered by: cescareno08
Date published: 2018-10-10

Hi, I have a GX-A3001 running a Rockford fosgate punch P1 12&quot; and thinking of upgrading to the&nbsp; Punch 12&quot; P2 4-Ohm DVC Subwoofer The Rockford Fosgate P2 12&rdquo; subwoofer The P2D4-12 features a Dual 4-Ohm voice coil so not sure if it will work?&nbsp;

Asked by: Slyd81
Hi. The 3001 is specified to deliver 415 Watts into 2 Ohms, under specified circumstances. This means that you can connect the two 4 Ohm voice coils in your subwoofer drive unit in parallel, to give you a total impedance of 2 Ohms. Of course, no load is ever totally linear and ideal, so your sub may dip under 2 Ohms, and rise above 2 Ohms. Since 2 Ohms is the minimum that the 3001 can handle, it is on the edge of its capacity, so if your sub dips under 2 Ohms, or if you have low DC input voltage, or play at maximum levels over long periods of time, or have insufficient cooling, you may still experience problems, like protection circuits cutting in or thermo protection shutting audio off.
Answered by: Bo Harman
Date published: 2018-01-12

What is proper wiring for a 2 ohm speaker so i can get the full 300 rms of the amp

Asked by: shaun35
The GX-A3001 has two parallel sets of speaker connectors, allowing you to connect two subwoofers. If you are using a single subwoofer rated at 2-ohms you can connect it to either set of GX-A3001 speaker connectors, and this will provide that subwoofer the full 300W RMS of power.
Answered by: Ren at Customer Service
Date published: 2017-12-02

Hi, I have a single 2-Ohm JBL MS-10SD2 shallow Sub- so should I connect the red+ to terminal 1 &amp; the black- to terminal 2 or to terminal 4 on the A3001 Amp? Also, is it OK to bolt it upside down in the boot onto the rear shelf / deck next to the Sub?

Asked by: Pulsarlaser
Hi, A single 2 ohm's subwoofer is connected to just a single channel ( not bridged ). If you have a 2nd 2ohm subwoofer, you will need to connect them serial on the 2 channels. ( You can find this information in the owners' manual you can find on our product page ). As for where to place the amplifier, this can be done upside down, or on it's side without any issues If you require further assistance, you can always reach us by email customer.support@harman.com or of course by phone
Answered by: Kay Harman
Date published: 2017-12-02

Hi, this amp is recommended for sub 250 rms 4 ohms and how is the connection???

Asked by: Cescareno08
To do the setup for the GX-A3001 Input, use a &quot;Y&quot;-adapter to connect your source unit or processor's subwoofer line output to the amplifier's left and right inputs. If your source unit does not have a dedicated subwoofer output you can connect the rear left/right outputs to the amplifier's left and right inputs.
Answered by: Steven M
Date published: 2018-03-16

Will this amplifier suitable (with optimum performance) for 2x subwoofer JBL GT5 12 single coil (@275W)??

Asked by: Bachtiar
Hi, Yes, this would work, the amplifier will give 300 Watt in 2ohm that means that 1 speaker will get 150 Watt RMS and the limit is 275 Watt, so this is safe under the limit. If you require further information, feel free to contact us by phone or email
Answered by: Kay Harman
Date published: 2017-12-02

will this amplifier suitable for old 2x JBL GT5 12 svc ??

Asked by: Sastra
Hi. Yes, the GT5 12&quot; sub is a 4 Ohm woofer, and you can connect two of them in parallel, to get a 2 Ohm load. The GX-A3001 amplifier is specified to give slightly more than 400 Watts into 2 Ohms, so that should work fine. One important thing to remember is to allow sufficient cooling for the amplifier. It should never be covered by blankets, floor mats, luggage etc, if you want to play loud.
Answered by: Bo Harman
Date published: 2019-01-17

If I have only one 2 ohms load do I have to use only one pair of terminals (+)(-) --&gt;(+)(-)&lt;-- or do I have to connect it like if it is in bridged I mean like this --&gt;(+) (-)(+) (-)&lt;--

Asked by: LKiD
The GX-A3001 has two parallel sets of speaker connectors, allowing you to connect two subwoofers. If you are using a single subwoofer you can connect it to either set of GX-A3001 speaker connectors. If you are using two 2-ohm subwoofers you can connect them to one of the sets of connectors in series to be above the required 2-ohm minimum impedance.
Answered by: Miko at Customer Service
Date published: 2018-02-06
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