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I had 2 12" alpine swr dvc 4 ohm subs wired up to 1 ohm on a hifonics brutus brz 1200.1 amp. i was pushing roughly 1300 watts, and one sub started clacking, took it out and put my old kicker cvr in. then the other alpine gave out. it looks like it got too hot and where the cone connects to the driver or whatever its eaten up, why would i blow the alpines? they where not even 2 months old, and i broke them in for like 3 weeks. ive had 2 sets of subs on this amp and its blown both sets, i had kicker cvr 12's before i had the alpines. what would cause them to get so hot and do that? oh ya and its in a sealed box
aron_ft72 I had 2 12" alpine swr dvc 4 ohm subs wired up to 1 ohm on a hifonics brutus brz 1200.1 amp. i was pushing roughly 1300 watts, and one sub started clacking, took it out and put my old kicker cvr in. then the other alpine gave out. it looks like it got too hot and where the cone connects to the driver or whatever its eaten up, why would i blow the alpines? they where not even 2 months old, and i broke them in for like 3 weeks. ive had 2 sets of subs on this amp and its blown both sets, i had kicker cvr 12's before i had the alpines. what would cause them to get so hot and do that? oh ya and its in a sealed box
"started clacking" suggests it was bottoming out, but you say there is other evidence indicating it over-heated. a very big clue as to what went wrong here is definitively determining whether the sub failed mechanically (basically banged itself apart) or thermally (voice-coil over-heated). both are deadly, but normally with over-heating it becomes hard to move the cone or it makes a scratchy sound when you press on the cone (the cone is the big 12" round part that moves). press it with your finger and see if it scratches or feels harder to push than it should. if so, that would indicate thermal failure.
there's a few ways i can see this going wrong.
1. the enclosure does not have segmented chambers (a separate sealed space for each sub).
2. the amp sent a clipped signal
3. the enclosure was incorrect.
4. faulty amp (not making rated power for some unknown reason).
5. a defective set of subs (not likely with Alpine brand subs, but if you got them with some extraordinary discount from a shady dealer, it's a def possible).
well, they could have been wired improperly, the enclosure could have been too small and shallow to where the subs didn't have adequate room for ventilation, the enclosure could have been too large to where the power handling of the subs was greatly reduced, yet they received full power, or your gain could have been set to high to where you were feeding them a clipped signal.
Those are just some possibilities off the top of my head.
i used to own that amp... put my friends type R's on them.. they started bottoming out and couldnt take it. My subs rated at only 400 each so 800 could take that amp. Either your clipping or the box is wrong for the type R's, my friends box didnt seem right and his type R's blew with only about 1000RMS
JVC KD-AVX44, 2 Massive Audio Hippo 8's , Hifonics Colossus going back in soon, MB Quart ONX216, Fli audio FL450S-F2, Energy ENC693x2 in rear deck, 6 gauge kit plus a huge 3 gauge kit. Custom built box for my 8's :)