RE SXX 12 bottoming out?

[IndianaBassHead]

What's up guys? This is my first post but I've always been a big fan of this forum... But, I've got a problem. I just got my system installed in my new car. I have 2 re audio sxx powered off of an arc audio ks1200.1 and an arc audio ks1000.1. ( had 2 ks 1000.1's but when there was a problem recently they sent me a new ks1200 instead.) Anyway, one of the subs works perfect, but the other bottoms out on every low note. The amp settings on that sub are turned down to where it hardly even moves with high bass. But when it hits the low note it still bottoms out. Also it seems like the sub is kind of pulling in instead of pushing out. And yes everything is wired correctly and the phase on the amp is correct as well. I am stumped.. also if I'm looking for more spl, would 2 aq1200d's be louder than the arc's? I could sell the arc's used for well over the amount of 2 new aq1200d's. I'm just going for spl in this build. And the subs are in a 4 cu ft ported box tuned right around 30 hz in the hatch of a 350z. Thanks for the help!

[Tarball]

if one is pushing instead of pulling there is a polarity issue somewhere. Are the subs sharing the same space ? May not be a good idea to run the subs on different powered amps.

Try running on one amp and see if you still have the push/pull and bottoming issue.

[skyhighcaraudio]

try switching the subs and amps, so take one sub and connect it to the other amp and see if the same sub still does it or if the other sub now bottoms out. then you will know for sure if its the sub or the amp

[IndianaBassHead]

Ok, I will definitely try switching them out. I will go down to the garage and do that real quick. But also, does anyone know if I can bridge the ks1200 and the 1000? They both put out 1000rms at one ohm... And I would be bridging them to one ohm. It's just the ks1200 does 1200 watts at 2 ohms which is what they're currently running.

[Reilly]

Shard airspace? If so, the amps have to be gain matched. If you can with these different models, idk. Their output scaling may be too far off.

[IndianaBassHead]

ya it's shared airspace. So you think the problem is the two different amps? In that case, i don't know what to do. Arc actually kind of screwed me by giving me the new model... now I have to buy another to match. -___-

[Reilly]

After trying the switching woofers idea posted and confirming that the problem follows the amp, I'd say your best bet is to get another of one or the other.

By SPL, do you mean competing or just groundpounding? With either of those amps properly paired, you make enough to really work those woofers. Other option is sell both and by a single 2-3k watt amp. New KS2500 would do ;(

[IndianaBassHead]

I actually haven't tried the switching woofers idea yet... I need to finish my coffee and quit being lazy and go try it out.. lol. But I will run down to the garage real quick and try it out. I talked to my buddy that's a dealer and he said I will probably need to swap the 1000 for a 1200. but the thing is, I can buy 2 of the aq1200d for less than 1 ks1200. So I might just sell both arc amps and buy the aq's. But I will keep you updated with the woofer swap.

[Tarball]

call Arc, explain the situation, that the amp that was returned was part of a bridged set. They may either swap you 1000 up to 1200 or the 1200 back down to a 1000, or they may do nothing. I would still try because the fault of the original unit is what seems to have put you in this situation.

[lazie420]

how did everything go .i think you should try for shits and giggles to run the subs off one amp and see if it still happens if so theres another issue if not awesome and get a pair of strapable amps or one big one