Running a dvdscreen/ headunit, with a RF P3002 amp, makes about 400 RMS, and athe sub is an Infinity Refrence series 1230W. about 400RMS, and 1200 peak, I have it wired as per usual, but i am running a pretty high guage wire for this stuff, 10 AWG?? will this have anything to do with it? the sub is in its own box, Im thinking i just have a shiity sub, any suggestions?

PS used to have it wired through a line LOC spliced into the speaker wire and it never blew (stock HU) now i have it obviously RCA'd up, and this is the second blow with the same model sub, usually takes about 3-4 weeks of wear before going

 

10awg to what?
i use 4awg for power and ground and 16awg for speakers.
after i blow one, i try another name. how hard do you push them?

 

Saw a handful of the 1230W's come back blown to my CC. Besides running >10 gauge (which wouldnt really blow a sub if it was still set up right), I say get a new sub.

 

If you continue to blow subs, there's certainly a reason for it. It has absolutely nothing to do with the wire. The wire will only allow a certain amount of current to transfer through it, depending on size of course. 10 awg is more than sufficient for 400W. what type of box are you running? How far do you turn up your deck when listening to music? I am willing to bet that you are destroying subs due to distortion, and you can't hear them distorting because they are in your trunk. If you are turning your deck up beyond the 1/2 way mark, you are not sending your amps a clear signal. You need a sufficient amount of power to be produced at a low distortion level. Too much power often doesn't kill subs......too little power does.

 

To clarify ... too little power, when driven to the point of clipping (square wave) is what kills a speaker. It's not the lack of power itself that kills it. It is when the person turns up the volume (because it isn't loud enough) to a point where the amp distorts (clips) that is the problem.

 

Do you have gain, bass on the HU, and bass boost all the way up? That would definately do it.

 

yup have all those up man, so what should i do when getting my next sub so i dont blow it too, (ie how can achieve the same bass volume without turing the bass, gain and bass boost all the way up?)

 

I'm thinking perhaps you have the gains on your amp cranked up to high and that is causing you to clip your amp. A clipped signal into a speaker will destroy it over time. I suggest you set your amp's gains properly.

What head unit are you running? Most DVD screen head units have preamp outputs rated at only 2 volts. Using a line driver will bump that signal up nicely so that you can turn down the gains on your amp so that you get a more clear signal and less chance of clipping.

 

so basically your saying,

"I have everything cranked up all the way, so why do I keep blowing subs?"

 

that sub is only rated for 300rms. your blowing it because your feedin it too much power

 

If you want more bass without turning everything up, get 2 12" subs (or 15"s).

 

Thanks bollwerk. I just figured I'd put it in simple terms

 

Just stick to JL Audio. Can't go wrong.

 

You are joking.....right?