Question about Jl Audio 500/1 Car Audio Amplifier

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Subs dont beat like they should

Ive had my 2 10" kicker comp vr c10d subs now for about 6 months, since then i also got a 10" blau, and a 10" mtx thunder series, i had all but one kicker hooked up in my car, then i got a ported box for 2 10" subs, i put the box in, and i put both kickers in. so now i have all of my subs in my car. an i have 1000 watts powering it all. it worked great for a few hours. then one of the kickers started to crackle, so i unplugged it, from the amp. then the amp on the oor speakers starte to cut in and out. i went back to the trunk to look at it, and it stopped. so i looked at the wires on the amp an saw that a couple of wires were crossing so i cut some of the wire off and plugged it back in, then both of the amps started cutting in and out, but after they stopped the bass doesnt hit like it should, it doesnt thump, it doesnt punch, ive spent a lot of money on this system, and i want it to work. please help ASAP
thanks

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You've spent alot of money on **** by the sounds of it!!. you should only ever run multiple subs the same brand, power and resistance you can just connect any old subs to a system you need to wire them depending on the load that the amp needs to see. first thing is to try the amp/s on a individual sub to check your amps still work once done check the subs 1 by 1.

Posted on Jan 30, 2009

  • Seth Bourne Jan 30, 2009

    sorry the post b4 was supposed to say you cant just connect any old sub

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1 Answer

I have 2 10" Kicker Comp Subs


That amplifier is only rated at 150 watts at 4 ohms, or 300 watts at 2 ohms. Not a very strong amp to run 2 kicker comps. My guess is you have the subs wired wrong for your application. There are 2 types of subs, one is a dual 4 ohm, and one is a dual 2 ohm. Most people bridge these coils together and that cuts your ohms in half. For example. Lets say you have the 10cvr104 subs. Thats the dual 4 ohm sub. You wire the coils together in parallel, now its a 2 ohm sub. You have 2 of these subs running off of your amp, if they are hooked up in parallel, now you have a 1 ohm load, out of the amplifiers normal operation. Your amplifiers internals heat up really quick and there is a thermal overload, putting your amplifier into circuit protection mode. My suggestion for wiring your subs is as follows: for each speaker, wire the coils together like this- positive coil1 to negative coil 2 and negative coil 1 to positive coil 2. That is called running in series, and doubles your ohm load. Next, we need to wire the speakers together properly to hook up to your amplifier. For this, since the coils are hooked together, you only need to use one set of terminals from each sub. And take the positive from sub 1 and hook it to positive of amp. Take negative sub 1 and hook it to positive of sub 2. Take negative of sub 2 and hook it to negative of amp.

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Here's the link to MTX's sub page where you can view or download the information you need to properly wire the subs to your amp.

http://www.mtx.com/caraudio/products/manualsQuickInstall/subs.cfm

For maximum power, you'll need to wire the subs so that they present a 2 ohm load to the sub outputs on your amp. That will give you the full 420 watts RMS the amp is rated for. Likewise, you,ll want the run the front 4-channels at 2 ohms. Run separately, they produce 85 Watts times 4 channels, or if bridged, 130 watts times 2-channels. But if you run fronts at 4 ohms, they only produce 70 watts times 4 channels and your sub output at 4 ohms drops to 210 watts.

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try to check and clean the wiring as clean as possible to avoid messing up on your connection. Check the polarity of you subs to yuor amp if you have it connected on the outher way around it would not give you a good result. check the polarity this will solve your problem. Over powering your sub will fry it easily try to tune it a 10" sub wont give you a 15" performance..

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