car audio

[400exrider0004]

hey guys,
I am looking into a system for my 74 camaro. I know what kind of head unit and speakers so I dont really need help with that. What I do need help with is picking an amp. The sub I have is an Insignia - 12" 4-Ohm Dual-Voice-Coil Subwoofer. The max output is 1800 watts, but the RMS is 600watts. I need an amp that would put out enough power to support it. I believe I need a mono amp? I was looking at the kenwood 1800 watt amp for it but not sure if it will support it. Any information would be much appreciated.

Thanks

Heres links for both:
http://www.kenwoodusa.com/Car_Entertainment/Amplifiers/KAC-9103D
http://www.bestbuy.com/site/olspage.jsp?skuId=8231433&type=product&id=1168042688052

[rbgnwa45]

I've never memorized wiring configurations. Measure amp output and speaker handling by RMS to match a sub/amp. That amp puts out:

1 Ohm@14.4V Over 900 Watts × 1
2 Ohm@14.4V 900 Watts × 1 (100Hz, 1.1%THD)
4 Ohm@14.4V 500 Watts × 1 (20-200Hz, .5%THD)

If you wire it into 1-ohm, you will be overpowering your sub by 300W, if wired into 4-ohm, it will be 100W underpowered, which isn't bad at all. I owned a Kenwood 550W amp and it was decent for what I paid for it with a 3-year warranty. I was told they have heating issues if they're not vented. Mine was in a trunk and it had never shut off. IMO, if you like bass, upgrade your install. I seem to always buy bigger and better subs and need more power.

[400exrider0004]

How would u wire it into one ohm? I know its a 4 ohm sub, but how would u make it into one? Pretty much I need an amp that puts out the same amount of RMS as the sub RMS. Does it matter what ohm its at or just matching the RMS(if that makes sense)

Thanks

[400exrider0004]

i figured it out to get it from 4 ohm to 2 ohm but not to one. Will I blow the sub if I overpower it by that 300 watts?

[rbgnwa45]

Google "subwoofer wiring diagram" or something. A bunch of things depends on if that sub will handle 900W. First of all, who knows if it's a true 900W? It probably isn't anywhere near. IMO, buy a sub that someone has heard of, and an amp that has a lot of good opinions on it. You can't go wrong with a $100 alpine type-R, that will handle 500W (12"). They don't have much cone movement but they're loud and reliable. There's a lot more quality stuff you could spend your money on but not break your wallet.

[ricksmx865]

you need an amp that does roughly 600 RMS at 2 ohms

a lil less a lil more will be sufficent enough...

then when you wire it up you just need to wire your sub down to a 2 ohm load, its super easy.... anyway this is what you need to do