[mikegett]

Originally posted by shockz+Jun 9 2005, 09:01 PM--><div class='quotetop'>QUOTE(shockz @ Jun 9 2005, 09:01 PM)</div><div class='quotemain'><!--QuoteBegin-jamcllw@Jun 9 2005, 04:55 PM
Then why not get just one sub and properly power it with the 250/1.Â;-) What's going to happen is your going to want more bass and turn up the gain on the amp sending a clipped signal to the subs and burn up the voice coils.Â;-) 1 W3V2 will sound better with proper power than 2 will without the right amount.

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Alright... a little history on my subs.

I got them back in 04 around october. I had a mtx roadthunder amp... I think it was the rt202. I don't want to go to my car and look.

That amp did fine... I thought the bass was good enough.

People in my car did too, but they thought I just had really good 6x9's.

I decided a couple of days ago that I'd give them a little more power... since they are more than capable of handling more than 75 watts x2 rms.

I really don't blast my subs... I'm not the person that likes the rest of my street to hear what I'm listening too...

I just finished hooking the amp up and put the gain to only around 35% of maximum and it sounds great. Louder than my mtx amp... but not too loud.

Trust me... i'm not going to "burn up" my subs. I know the limits of JL subs. We've had subs in our cars since the early 90's... I've just never installed them before and wondered how it actually works.

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jamcllw was correct about underpowering a sub. You can burn the voice coil just as quick from underpowering a sub as you would with overpowering it. It is always in your best benefit to match the rms. When a sub is underpowered it will play fine until it hits a low note that exceeds the amps threshold. The cllipping of the amp causes a distortion to go throught the sub. There are two harmfull states for a voice coil. One is a frequency below the woofers capability and the other is distortion. You would be suprised how quickly a amp and a sub will heat up in these states.
When underpowering the subs you want to prevent the clipping of your amp as much as possible. The best thing to do is filter out as much of your low frequencies as you can. Set your subsonic filter (if you have one) to eliminate anything under 40htz minimum. If you listen to rock you can safely go to 55 or 60 and never hear a difference. In fact, you probably won't even need a subsonic filter with rock. Next, be sure to keep your volume at a minimum. If you have a sub control, don't raise it to the max setting. Back it off two turns. As long as the amp doesn't reach clipping it will be fine.