Question about Jensen LXA400 Car Audio Amplifier

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Jensen LXA400 Fuse Size and RCA hook up for 2 channel mode?

I just need to know what size fuse i need to put in this amp and if anyone could tell me how to hook up the RCA cables to i can run this bridged with just two subs that would be great, but the fuse is the big one, just need to know what size fuse to throw in there. Thanks.

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Take it to a stereo shop. there are variables you may not be aware of when hooking up speakers to an amplifier like ohms, very important!

Posted on Dec 10, 2008

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I'm running 8 gauge wire for battery cable and ground cable....my amp.is a momentum 600 watt...2 channel. ....my fuse is blowing every time I hook up either cable...


First of all, what size fuse? Check the amp and see what max amperage is, and insure your fuse is that size. Secondly, I suspect either a blown speaker or blown outputs. Disconnect the speakers from the amp and see if the fuse still blows. If it does, either you are hooking two wires up improperly, or your outputs are toast.

Aug 06, 2016 | Car Audio & Video

1 Answer

Need to know what order to hook up red,yellow,and black wire which to positive which to neg and what size inline fuse is needed for my mcd 5080


Red- power Yellow-Memory Black-Ground

Unless the yellow wire has a fuse built into it then....
Yellow- Power Red-Acc/Ign Black- Ground

If the fuse you are asking about is on the radio t s usually a 10 or 15 amp fuse but if you mean for the power wire for a amp then it depends on the power amount of the amp....look on the amp and find the sum of the fuses on the amp and use a inline fuse that is the next fuse size sum...
Ex. 2 40 watt fuses on the amp then 40+40=80 watts so you would want to get a 100 watt fuse. Also remember you can never go to big for your inline fuse with a amp

Aug 22, 2011 | Jensen Car Audio & Video

1 Answer

What size fuse do i need on the positive side do i need if i have it hooked to the battery. my cb is a maxon mcb-40. if u cud tell me what size inline fuse i need it would help alot thank you


Most un-modified CB radios run about 2 to 4 amps on transmit. A 5 amp fuse is sufficient for most radios. Check you owners manual for the correct size fuse to use.

Feb 28, 2011 | Maxon Radio Communications

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

400 watt jensen amp not hitting.


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

Jan 29, 2009 | Jensen LXA400 Car Audio Amplifier

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

2 Answers

Bidging


You can't bridge 4 channels into one channel. You can bridge the amp to two channels and drive one dual voice coil speaker.

 

The owner's manual is available from Jensen.

Oct 11, 2007 | 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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