[i jump'd ahead and bought to big of a sub]

Yeah but im not even powering it to its reccomended rms rating but if i do the big three on a 90 amp alternator i shouldnt have dimming lights at 1000 watts rms?

even if you have .1v of drop, you'll have light dimming.

is there anyway to fix voltage drop?

[i jump'd ahead and bought to big of a sub]

well, power draw is mainly due to the amplifier, not the sub. Any sub will act similarly.

But, with 600w, or even 1000w, you will be fine with your alt.

The alt will make power at 14.4v x 90A. But also the battery is taken into consideration. How much power can the alt/batt combo supply?

Most commonly, its about 2000-2500w for a factory setup. But time is also a factor so how much power over a given amount of time.

Yes but since im not really powering my sub to its fullest im not getting all it can do, my thoughts are if i down grade a sub and be able to push it more would i end up with sououd improvements

You dont have to power it to its fullest. It will have other benefits over lesser subs than just greater power handling. It may have a flatter frequency response and sound better and may also be more efficient. So I'd stay with that sub and just tune your amp to be as clean as possible.

The greater power handling means that you can upgrade the amp in the future just to get it a bit louder. But you dont have to if it sounds the way you want.

Yeah but im not even powering it to its reccomended rms rating but if i do the big three on a 90 amp alternator i shouldnt have dimming lights at 1000 watts rms?

[i jump'd ahead and bought to big of a sub]

Same cone area on the same power I would have to say would stay the same. Best to keep the x and when u get more electrical to back it, than the sub isn't completely shredded. Just make sure you aren't clipping the sub or trying to make it louder and kill it with heat.

Nah im not running it hard. i would liek to be able to listen loud and hard without my lights dimmming. but if you think same power same surface area on same line of subs wouldnt make much of a different ill just have to make some car improvements.

[i jump'd ahead and bought to big of a sub]

well, power draw is mainly due to the amplifier, not the sub. Any sub will act similarly.

But, with 600w, or even 1000w, you will be fine with your alt.

The alt will make power at 14.4v x 90A. But also the battery is taken into consideration. How much power can the alt/batt combo supply?

Most commonly, its about 2000-2500w for a factory setup. But time is also a factor so how much power over a given amount of time.

Yes but since im not really powering my sub to its fullest im not getting all it can do, my thoughts are if i down grade a sub and be able to push it more would i end up with sououd improvements

[i jump'd ahead and bought to big of a sub]

I am fairly new to car audio and i didnt do the math to figure out how much my car could handle, so i went with a alpine type x 12 and a mrp m1000 to power it.

Buut i only have a 90 amp alternator. right now im running it at 600 watts 4 ohms and if i did my math right 90x12 (my voltage isnt that low im just being conservative) is 1080 and my car needs half of that so im left with like 500-600 watts. I dont really wanna upgrade alternators and im bout to do the big three cause i still dim.

but the reason i've come to a forum despite the fact im going to be laughed at is for this question.

Would i be better off and louder if i downgraded to a smaller sub? say the alpine type r witch is 500 rms and run that at600 4ohms with the amp i currently have?