Question about Jensen LXA300 Car Audio Amplifier

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Jensen 300 amp unknown

I dont know much about apms/subs but i was given this amp as a gift and no chords were attached, what do i need to but to get my amp and subs up and working?

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Re: jensen 300 amp unknown

Go to the harman kardon site and download the owners manual and u can order any thing you need including a new wiring harness

Posted on Apr 06, 2007

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first thing you should do is check your coax cables and wiring to the subs if that dont work see if your radio has a sub control to turn on the sound to the sub.

Oct 29, 2011 | Car Amplifiers

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I need a wiring diagram for the jensen lxa400. Pushing 2 kenwood 6x9 (200 watt rms each) and 2 dual voice coil 12's (300 watt rms each) in a truck box. Everything is 4 ohm. Thanks, Curtis

you shouldn't need a diagram all you need is these items here.

purchase a 4gauge wiring kit

run a a power line from battery to amp with a in line fuse 6in from battery.

run a ground from car frame to amp. ( scratch paint and screw it down with an eyelet for good contact)

run a remote from radio to amp.(blue wire)

run rca's from the radio to the amp ( sub input on back of radio)

finally connect your speakers.

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I just need to know the best way to hook my amp and subs together. i like a lot of bass. i just bought the subs and yhey dont really sound any diffrent. should i get a new amp.

Hello hembreegerry,

If you like a lot of bass, you definitely need to consider another amp. The SP2X-300 is only rated at 170 watts RMS into 4 ohms mono. That would barely be enough to power one small sub. You do not specify what brand and model your subs are, their impedance, or their power handling capacity. But for any subs, your best power solution is to add together the individual RMS power handling capacity and select a monoblock amp that provides close to the maximum at the impedance they will be wired to present. For example, if your subs are 4 ohms and have a maximum RMS of 250 watts, you would want an amp that outputs abour 500 watts into 2 ohms (2 4 ohm subs wired in parallel = 2 ohm load). An ideal amp in that example would be the Alpine MRP-M500 which outputs 500 watts RMS into 2 ohms.

Hope this helps.

Sep 10, 2009 | Power Acoustik Sapphire SP2X-300 Car Audio...

1 Answer

Amp works when beaten

It sounds like you have a broken connection in the amplifier. The first thing to check is the fuse. Sometimes the contacts become weak on the fuse holder and the connection becomes intermittent. Any other troubleshooting would require opening up the amp. Any repairs would require resoldering the broken connection.

Let me know if you have any other questions.

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I had same problem with a TC6001 and get solution from MTX, not send to MTX instead MTX kindly sent a quotation for parts to be replaced, I can tell you what parts need to be replaced if you still need a solution.

Jul 12, 2008 | MTX 6001 Car Audio Amplifier

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Hooking Up A Sony XM754HX To Jensen BP210

hi .let me see if i can help u out ...need more info on the speaker..are the 8ohm or 4ohm ? and are the single are DVC?.....from what i can see u can bridged the amp..and u must connet the subs in series or just connet each sub +/- to +/-..and that will give u a stereo mode... u will still get great sound

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it needs to be checked for faulty solders if you dont know how to do this take it to a tech

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1 Answer

Both green and red ligt or on my jensen ka3 i dont know what it means i had it working b4 i swaped my subs for some new ones and the amp dosent work now.i dont know if is because of the red light but i...

Generally, the power light is green and the protect light is red. If the protect light is on there could be a short in the wiring or there could be an internal fault in the amp.

Disconnect all speaker wires from the speaker terminals of the amp and disconnect signal cables from the amp. If it powers up, the wiring needs to be checked. If it still shuts down (goes into protection), the amp likely has blown output transistors.

Dec 28, 2007 | Jensen KA3 Car Audio Amplifier

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Need board map!

You might write to the folks at and see if they can cover your model. I know they do have some Jensen manuals. Hope you succeed.

Mar 16, 2007 | Jensen LXA300 Car Audio Amplifier

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