Sub Blown

[Brandon445 0]

I have a 12" bl and today I am pretty sure I blew the voice coils on it. I was driving around and the sub cutout and I opened the back of my jeep to see that there was smoke coming out of the port. I know for sure that I had everything wired right and i didn't even have the gain up that high( a little over half). I am going to re-cone it but I was wondering if anyone knows what could have caused this so I don't blow the new I get.

Thanks

[thor02 2]

Clipping probably caused the coil to be cooked. Where you from in MN?

[thor02 2]

What kind of power did you have going to it? What's your electrical like?

[Brandon445 0]

I live in Stillwater. I have a Kicker zx1000 and I had the gain a little over half so I'd say roughly 6-700rms? My electrical is all stock but i do have a red top battery

[jcarter1885 995]

Gain at halfway doesnt mean your at 600-700 watts, the gain is there to match the input signal of your headunit. For example if your head unit is a 4 volt preout you want it between 20-45% roughly but that is all dependent on how high your gain setting is on the amplifier. Turn your gain down some, what size enclosure and tuning is the enclosure?

[Shogen 325]

what was your port tuned to? your amplifier has a fixed SSF of 25hz I believe..

[ssh 924]

what was your port tuned to? your amplifier has a fixed SSF of 25hz I believe..

Poorly set ssf would allow bottoming out, don't see how that would cook the coil.

[Shogen 325]

I guess you're right, but wouldn't bottoming out create alot of friction which could at to the heat already applied? Just saying.?

[ssh 924]

I guess you're right, but wouldn't bottoming out create alot of friction which could at to the heat already applied? Just saying.?

Bottoming out would tear spiders, tinsel leads, etc.

[Jd377 6]

Yeah, half gain on a 1000w amp doesn't = 500w... On my sundown 1200 amp, when I use a DMM to match my H/u my gain is only around 1/4 the way up and that is matched with the h/u voltage.

[ssh 924]

Yeah, half gain on a 1000w amp doesn't = 500w... On my sundown 1200 amp, when I use a DMM to match my H/u my gain is only around 1/4 the way up and that is matched with the h/u voltage.

And vice versa for me, well I didn't use a dmm, but gain needed to be set around 3/4 on my saz1500d.

[NDMstang65 403]

[emh9009 199]

did the subs sound funky before you saw smoke? Do they still play?

[Brandon445 0]

The box is 2.5 tuned to 32

[Brandon445 0]

No it sounded just fine and they just cut out and no the sub doesn't work

[Brandon445 0]

No it sounded just fine and they just cut out and no the sub doesn't work

[muddybass 13]

wow that video rocks

[Brandon445 0]

I forgot to say this earlier but the guy who built and installed the sub in the first box I had might have wired it wrong. I took the sub out to re-wire it with some thicker speaker wire and I used a diagram that someone post on here from 12volt.com and I'm not sure what it was wired to but it definetly not wired the same way as the diagram and this was when i first got the sub and i was using it wired like that for a couple weeks so could this have damaged it and just over time the voice coils blew because of it?

[ssh 924]

I forgot to say this earlier but the guy who built and installed the sub in the first box I had might have wired it wrong. I took the sub out to re-wire it with some thicker speaker wire and I used a diagram that someone post on here from 12volt.com and I'm not sure what it was wired to but it definetly not wired the same way as the diagram and this was when i first got the sub and i was using it wired like that for a couple weeks so could this have damaged it and just over time the voice coils blew because of it?

It could have been wired differently but been the same impedance that your wiring diagram would do, or completely different. I don't see how it would have affected it now, it honestly sounds like you cooked the coils with too much power.

[Brandon445 0]

alright well thanks for the help

[droneout 0]

I believe it was either not wired right,or it wasnt fully broken in.Did it smell like burned voice coil before it went out?

[Brandon445 0]

I believe it was either not wired right,or it wasnt fully broken in.Did it smell like burned voice coil before it went out?

[/quote

No,there was no smell coming from the sub until right before it went out.

[lamontp1 0]

I believe it was either not wired right,or it wasn't fully broken in.Did it smell like burned voice coil before it went out?

[/quote

No,there was no smell coming from the sub until right before it went out.

I believe it was caused by clipping