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Old 10-04-2009, 05:42 PM   #1
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Default Amp cuts in and out

Ok i have a 500 watt jensen amp 250 x2. I have that hooked up to two 500 watt RMS subs at 2 ohms, now i know that'* pushin it but the amp never even gets hot and it still cuts in and out. It will either just cut out or switch to 1 channel. I hooked them up at 2 ohms because they are dual voice coil subs and i read that you shouldnt run just one voice coil. Is that true because i would hook em back up at 4 ohms so the amp wont cut out.
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Old 10-04-2009, 08:27 PM   #2
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id say check your wiring to make sure the ground is good.ive seen amps cut in and out from that and is prob easiest to check. also what ohms are the coils of your subs and how do you have them wired? even thought he amp dont get hot it might still be going into protect cuz of the subs wired wrong. and as for the running a single coil you will hear people say its good and not good. personally ive ran my DC on one coil for a few weeks with no prob what so ever. my good buddy and soon to be team mate is running his sub on 1 coil for now as well. hope to help ya figure this out mang
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Old 10-04-2009, 09:40 PM   #3
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The subs are dual 4 ohm, in the manual it gives diagrams for 4,8 and 2 ohm wireing setups i have it on 2 right now i also tried it on 8 and it didnt kick at all. All my wireing is good ive never had a problem with my ground or anything like that. I think the amp just cant take pushin both those subs at 2 ohms its probably just maxin it out.
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Old 10-04-2009, 10:49 PM   #4
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hmm ok so you have all the pos together and all the neg together on each sub, then how do ya have the subs, each one wired to the amp? if you have all pos from both subs together and all neg together then bridged at the amp it would be a 1ohm load and reason your amp cuts out. it wont play long enought o get it warm, if i got the info right that is lol. any idea the model amp and subs they are,then we would be able to help a bit more.
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Old 10-04-2009, 11:24 PM   #5
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Your amp could be going into protection mode. Check to see if there is a protection mode light that will come on if it goes into it. Also, dont run your sub on only one voice coil and put the rated rms or max wattage on it. Using one voice coil means you will only be able to take half of the rated power to it. It could just be the amp as well. With all due respect it is a jensen and you do get what you pay for with their amps. try running your amp @ 4 ohms and see if it still cuts out. Wire both subs in series and then run them parallel at them amp.
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Old 10-05-2009, 09:02 AM   #6
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Yes i have all the pos and neg hooked up on both subs,but they are not bridged at the amp they are just hooked in straight to each channel. Is there any way that i could hook them up to where they would still be running both voice coils but not running them at two ohm? Im getting a new amp this week either and autotek or a crunch and hopefully it will be stable at 2 ohms.


That is how i have them hooked up.
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Old 10-05-2009, 10:28 AM   #7
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yes. that is what I just suggested. Wire them series parallel. on each sub run one wire from positive the other voice coils negative. then run the remaining two to the amp bridged on the positive of one channel and the negative on the other channel. Do the same to the other subs and wire them to the same terminals on the amp as the other pos and neg wires.
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Old 10-05-2009, 10:40 PM   #8
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Ok my amp cannot be bridged, ive just spent the last 2 hours trying to hook them up every way possible and the amp just cant do, its junk.The box i have sucks too so im gunna get a new amp and box and see what happens.The amp cant run them both at 2 ohms, it doesnt kick at all when hooked up at 8ohms, and i dont know how to hook both the voice coils up and still run them at 4 ohms. I also tried hooking them up the way to told me and it cuts out one channel and just runs one sub.
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Old 10-05-2009, 11:16 PM   #9
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If you wire them series parallel like I said before, the amp will see 4 ohms
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Old 10-05-2009, 11:27 PM   #10
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I tried that and i just cuts to one sub.
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