Fi Q, did I blow it?

[sdimeyahl 0]

hi i purchased my sub couple months ago its a Q d1, im runnin it on a mtx te1501d 1000rms in a 2.5cu box at 32hz at 2 ohm and i have all the options on the sub and its used daily, few days ago i noticed it wasnt bumping as hard still worked then all the sudden on my drive home today smelled somethin smoking and my sub went out , pulled everything apart wasnt the amp pulled the sub and soon as i pulled it out the box a bunch of smoke, the cone was cracked and broke away when i touched it, do i need a recone or what i thought runnin it at the 2ohm would set me staright for daily use didnt think it would abuse it too much, am i wrong, pls help thank you

[ABXX49 20]

hi i purchased my sub couple months ago its a Q d1, im runnin it on a mtx te1501d 1000rms in a 2.5cu box at 32hz at 2 ohm and i have all the options on the sub and its used daily, few days ago i noticed it wasnt bumping as hard still worked then all the sudden on my drive home today smelled somethin smoking and my sub went out , pulled everything apart wasnt the amp pulled the sub and soon as i pulled it out the box a bunch of smoke, the cone was cracked and broke away when i touched it, do i need a recone or what i thought runnin it at the 2ohm would set me staright for daily use didnt think it would abuse it too much, am i wrong, pls help thank you

The ohm load has nothing to do with it. It's the amount of power you sent to it. You probably got a little happy with the volume knob, ended up clipping the signal, and poof! Too much power burnt it up. You will need a recone. Did the cone crumble??? Take some pictures if you have a camera available. I'd like to see this.

[sdimeyahl 0]

ya i always have it cranked havent heard any clippin, though not to say that didnt do it, thought it could handle alot more than im puttin into it, but ya cone crumbled in one spot where it bunt upwards ill get some pics in a min

[ABXX49 20]

You might not always hear it. You need to set your gains accordingly and not push it farther then it's meant. Speakers have RMS ratings for a reason. When you clip the signal you are actually over powering the driver. I don't know the technicalities about it, but I believe you are sending roughly twice the power when you pitch a square wave vs. a sine.

[Kent535 25]

I Wanna See What This Looks Like !!

[jonbearsmt 919]

bass boost up?

head unit bass up?

gain over 3/4's?

Q's take plenty of CLEAN power.

[ABXX49 20]

bass boost up?

head unit bass up?

gain over 3/4's?

Q's take plenty of CLEAN power.

I think that's the problem.

[Bobaflob 0]

Not to mention that amp puts 1500 at two ohms anyway

[sdimeyahl 0]

you know i think i forgot to set my fudgein gain out of all of them i bet thats what did it, i got pics they are uploadin, stupidity lol how much are re cones

[sdimeyahl 0]

[sdimeyahl 0]

bass on head unit at 0 out of 5 gain at less than half no bass boost, ive heard some bad clipping but havent heard it from my settings ive had from this from even before i put in the sub so idk, amp birth sheet says 1360w at 2ohm

[Bobaflob 0]

What do the coils read at?

[NDMstang65 403]

Oopsy.

What size Q?

[sdimeyahl 0]

its a d1 12"

[Mike. 0]

....wow

looks like a small explosion through the cone heh

[KU40 173]

holy schnikes you basically lit that thing on fire! You were definitely overpowering it.

[sdimeyahl 0]

but how did i overpower it its been perfect until all the sudden havent had one problem and evrything is grounded properly all 1/0 i was sittin in traffic when it happened, i totally fried it and all the chit is low, the gain is high but still not even half

[burton907 0]

well glad to know Fi >>> way over powered sub for several months

Fi FTMFW!!! hahah. but seriously

fire >> j00.

send it in for a recone.

[sdimeyahl 0]

got response from fi they say shouldnt be a problem and im sending it in, they say everything i have should be a good daily setup so idk

[jesterjames 0]

did you drop it in the wood stove before you bought it ? lol

[ABXX49 20]

but how did i overpower it its been perfect until all the sudden havent had one problem and evrything is grounded properly all 1/0 i was sittin in traffic when it happened, i totally fried it and all the chit is low, the gain is high but still not even half

Say when you set your gain your head unit was on a volume setting of 20/40. You crank your volume up to 30/40, chances are you're well into clipping there, thus sending more power and frying it.

[kryptonitewhite 1]

hi i purchased my sub couple months ago its a Q d1, im runnin it on a mtx te1501d 1000rms in a 2.5cu box at 32hz at 2 ohm and i have all the options on the sub and its used daily, few days ago i noticed it wasnt bumping as hard still worked then all the sudden on my drive home today smelled somethin smoking and my sub went out , pulled everything apart wasnt the amp pulled the sub and soon as i pulled it out the box a bunch of smoke, the cone was cracked and broke away when i touched it, do i need a recone or what i thought runnin it at the 2ohm would set me staright for daily use didnt think it would abuse it too much, am i wrong, pls help thank you

The ohm load has nothing to do with it. It's the amount of power you sent to it. You probably got a little happy with the volume knob, ended up clipping the signal, and poof! Too much power burnt it up. You will need a recone. Did the cone crumble??? Take some pictures if you have a camera available. I'd like to see this.

see now that totally makes sense to me... clipped.... but 95Honda has that beautiful write up disproving clipping=failure, only too much power

[KU40 173]

I don't think you're thinking in the terms of all possibilities with clipping. If you have a 500 watt RMS amp on a 1000 watt RMS sub, you can clip the hell out of the amp and it'll only send a maximum of 1000 watts, which the speaker can handle and won't blow. But if you do like most people and match the RMS of the amp with the sub, now you have a 1000 watt amp on a 1000 watt sub. If you clip that amp even a tad you'll be getting more power than the sub is rated for. Full clipping could get 2,000 watts from it. That=failure.

[kryptonitewhite 1]

I don't think you're thinking in the terms of all possibilities with clipping. If you have a 500 watt RMS amp on a 1000 watt RMS sub, you can clip the hell out of the amp and it'll only send a maximum of 1000 watts, which the speaker can handle and won't blow. But if you do like most people and match the RMS of the amp with the sub, now you have a 1000 watt amp on a 1000 watt sub. If you clip that amp even a tad you'll be getting more power than the sub is rated for. Full clipping could get 2,000 watts from it. That=failure.

so is that basically the rule of thumb, full clip equals double rail voltage? cuz that's what I've thought for a long time.... but to me that supports the idea that clipping kills subs... though I see how it means clipping causes overpowering of subs, not the actual clipping itself kills it, as a fully clipped 1000 watt signal from a 500 watt amp wont hurt a 1000 watt sub..

AH-HAH! I think I just had to "say it out loud" lol

Edited March 26, 2009 by kryptonitewhite

[ABXX49 20]

I shouldn't have said double the power, as I'm not completely sure about that. I don't know if there is a rule of thumb, as you would have to calculate voltage and current into it. But basically, when you clip the signal, you send wayyy more power, thus burning something up.