Question about Jensen LXA400 Car Audio Amplifier

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400 watt jensen amp not hitting.

I have a 400 watt jensen lxa400 amp it is getting power, but it is not hitting at all.

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  • kustomdrag Jan 30, 2009

    Ok let me rephrase that. I have a 400 watt jensen lxa400 amp. I have power, but when it is hooked up to my 12's it is not hitting at all. I have the power the ground and the one in the middle all hooked up. I have the two pronged thing hooked up as well am I missing anything?

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Not to be mean but jensens have never hit as far as i know

Posted on Jan 30, 2009

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I have a 12 inch auduobahn 400 watt that is a special edition d jones. what is the best and most efficient way to install it with a jensen 400 watt 2 or4 channel mosfit power amp.


Is it a 2 or 4 channel amp???? Does it have a lpf (low pass filter)??? If its a four channel it prolly wont sound too great. If its a 2 channel you need to bridge sub to amp. Usually its the 2 outside terminals on the amp. Might have a diagram on the bottom of amp

Feb 27, 2012 | AudioBahn Car Audio & Video

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How do i bridge all 4 channels on the jensen 400 watt 4 channel lxa amp ?


  • This amp is not "bridgeable" at all. You will either blow the front end or blow the low end voice coil in your sub.

Regards, Tony

May 24, 2011 | Jensen LXA400 Car Audio Amplifier

1 Answer

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.

Mar 26, 2010 | Jensen LXA400 Car Audio Amplifier

1 Answer

I need a wirind diagram for a jenson lx 400 watt-


You should not need a wire diagram, all amplifiers are universal. 2 sets of speaker inputs, power "Large Red", ground "Large Black", and remote off/on "Small Blue". Thanks

Jun 08, 2009 | Jensen LXA400 Car Audio Amplifier

2 Answers

Wiring diagram for a LXA400 Jensen power amplifier??


Power wire to battery
Ground wire to body of car
Remote wire to power antennea wire on radio or power amp wire on radio if you have aftermarket radio
get back with me for any more ?'s

Jun 05, 2009 | Jensen LXA400 Car Audio Amplifier

1 Answer

DON'T KNOW WHAT WIRING KIT TO USE FOR 400WATT 4 CHANNEL AMP


well i will let you know now that 400 watts running into two subs like that will never match. You will want to run only one sub or get a bigger amp. But for that amp a standard 6 gauge power wire will be sufficient to run it. The ground wire about 4 gauge is good.

Feb 23, 2009 | Jensen VM9510 Car DVD Player

2 Answers

Jensen LXA400 Manuals


Just wondering where i can get a manual for this product jensen lxa400.if you know where i can get, i would appriciate it very much.

Jan 21, 2008 | Jensen LXA400 Car Audio Amplifier

1 Answer

Jensen LXA400


I have this same amplifier. I have noticed several ways it will "not work" during my ownership of it. I have it connected to a seperate battery to save my alternator, battery, etc as it is a power hungry beast for how low the output wattage is. Test the input voltage to see if you have enough, one way to see this is to check the "jensen" emblem that lights up. If you dont have enough power it will appear dim and only the right side lights up. Also the amplifier will not work if your speakers are "blown" even a little bit. Ive taken speakers that wont work on my lxa400 and connected them to a higher power amp and they will work (although they will sound horrible) If youre smart you will keep the gain under 3/4 on this amp, I see some people have found out the hard way that full gain fries the amplifier circuitry. Not an expert on electronics but it smells somewhat like melting glue or plastic. Ive noticed a lot of people have problems with the RCA jacks as well. There are 8 jacks, in two clusters. The first one is A+B and the second is C+D. Note: You do not NEED Y connectors on this amp! Connect your output rcas from the deck to top left and bottom left jacks of the left cluster. This will give you left and right (a+b) output from the first set of speaker outs. Then connect an rca patch cord from the top right and bottom right jacks of the first cluster and connect the other end to the top left and bottom left of the second cluster. This will give you output from the second set of speaker outs. Remember that this is in 4 channel mode. I dont remember the set ups for 3 channel but two channel I believe is the left deck rca goes to top left of the first cluster and the right deck rca goes to the top left of the second cluster. Then you just wire the speaker outs according to the picture on the amplifier. something like this: _________________________ |(+) - (-) +| ~~~~~~~~~~~~~~~~~~~~~~~~~ Speaker + goes to (+) and speaker - goes to (-) Also addressing another issue if you want to increase the wattage to your speakers you just use a lower resistance speaker (2ohm instead of 4) I would not recommend using anything over 4 ohms. As for the high level inputs, I dont recommend using them unless you have the plugs that go with them, its a lot easier to wire your deck rears to a line converter (changes straight speaker wire to RCA jacks) or to just buy a new deck with RCA outs. Last item, common knowledge: 400 watts does NOT mean 400 watts!!! This amplifier puts out very little actual wattage (50 or 83 per channel depending on the load) Hope all this helps someone out there.. Anyone who knows the 3 channel setups I would appreciate it.

Apr 12, 2007 | Jensen LXA400 Car Audio Amplifier

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