sub amp help

[userdel 10+ year member]

i didn't wanna have to do this but i can't seem to figure it out. i searched the forum but all the threads seem to be like 3 years old. i got a idmax 12 v3 d2 and i'm putting it in a 1.5 c ft. sealed box. i would like to put 800-900 watts rms to it. couple things i'm unsure of though, wiring it at 1 or 4 ohms? i've heard doing it at 1 ohm really sucks your electrical system? mine is stock, and i also just bought a pg xenon x200.4 for my comps, so i'm also worried about my stock electrical system.

also, class d mono or 2 channel a/b? i've heard a 2 channel a/b will really strain your electrical system too, any opinions? so what do you think, 1 or 4 ohms? and what amplifier would you recommend? there's so many different models nowadays, i don't wanna end up with a piece of junk, i want something reliable that will last. hoping not to spend more than $350, i appreciate any help.

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[Beat_Dominator 5,000+ posts]

If you're worried about electrical needs, Class D amp for the sub for sure.

Wiring to 1 or 4 ohm doesn't matter as much.... you're more likely going to find 900w @ 4 ohm to be achievable in less expensive amps than 900w @ 1ohm.

 

[06stxf150 10+ year member]

i didn't wanna have to do this but i can't seem to figure it out. i searched the forum but all the threads seem to be like 3 years old. i got a idmax 12 v3 d2 and i'm putting it in a 1.5 c ft. sealed box. i would like to put 800-900 watts rms to it. couple things i'm unsure of though, wiring it at 1 or 4 ohms? i've heard doing it at 1 ohm really sucks your electrical system? mine is stock, and i also just bought a pg xenon x200.4 for my comps, so i'm also worried about my stock electrical system.also, class d mono or 2 channel a/b? i've heard a 2 channel a/b will really strain your electrical system too, any opinions? so what do you think, 1 or 4 ohms? and what amplifier would you recommend? there's so many different models nowadays, i don't wanna end up with a piece of junk, i want something reliable that will last. hoping not to spend more than $350, i appreciate any help.

Well most of what you said seems to be true anyway.As far as ohms go,Yes!It would be more efficient to get an amp that does its rated power @4 ohms rather then 1 ohm because as the impedance drops the characteristics of the amp change as you get closer to a direct short.At the same time you will have 900 watts either way which turns into current draw=Amps.No matter what you do it will affect your cars charging system.

What really matters is how efficient your amp is at reproducing the signal.That is were Class D comes in.Class D my have alittle more THD but it will take less from your cars charging system make it happen.

So A/B = about 40-60% efficient and Class D= about 60-90%...Someone else care to put some funk on it.........

 

[userdel 10+ year member]

thanks for the help guys.