multiple subs, power division

The minimum RMS output (per sub) needed from an amp would be more like: 600 watts per sub for the 10" version 750 watts per sub for the 12" version 1000 watts per sub for the 15" versionSquirrel

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Great catch bberman! I completely missed double checking the amps output specs at 2ohms and just concentrated on the sub specs Squirrel

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Yeah. You will want a couple of those amps

Just for everyones info this post is in regards to the ones on here titled l7 15's in a silverado. https://www.the12volt.com/installbay/forum_posts.asp?tid=16791&tpn=2

I hope you haven't already bought the equipment cause bberman1's post really shoots down the power with 4 L7 4ohm DVC subs and 1 KX1200.1 amp. With 4ohm DVC's, you can wire 2 of them in parallel for a 1ohm load. Still, each sub would only be receiving 600 watts per driver, and you would need a second KX1200.1 for the other 2 subs. Even then though, you would still be seriously underpowering the subs. If you wanted to keep the 4 L7's (and assuming you have the S15L72's), then you would be better off getting: 1) 4 amps rated 1000 x 1 @ 2ohms 2) 2 amps rated 2000 x 1 @ 1ohm With that much power you will also need to seriously beef up your current electrical system with at least a HO alternatorSquirrel

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Sorry, the amp recomendations above were for S15L74's (4ohm version), not the S15l72's (2ohm version) If you were to exchange the (4) 4ohm L7's for (2) 2ohm L7's and another KX1200.1 amp, then you could run each 2ohm L7 in parallel to its own amp at a 1ohm load for 1200 watts per sub. You may even save some money as well, but don't forget about a HO alternator too. IMO, running 2 S15L72's and 2 KX1200.1's would give you increased SQ and SPL vs. running 4 S15L74's and 1 KX1200.1Squirrel

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No. I was saying with (2) 15" 2ohm L7's and (2) KX1200.1's you could wire each sub to its own amp (1 L7 per KX1200.1) at a 1ohm load for 1200 watts per sub. And remember, most of this thread was based around the 15" model L7 (1000RMS 2000Peak) not the 12" model L7 (750RMS 1500Peak) Since you're looking at the 12's instead of 15's, you want around 750 watts per sub (instead of the 1000 watts that the 15 requires). If you're die-hard on using 4 12" L7's, then you would want (4) 4ohm L7's and (2) KX1200.1's. Wire two L7's per KX1200.1 at a 1ohm total load per amp (two 4ohm DVC's wired in parallel will produce a 1ohm total load) and you should receive around 1200 watts total, or apx 600 watts per sub. That's still 150 watts shy of what you should be using, but it's as close as you're gonna get with that equipment. Something else to keep in mind. The KX1200.1 ratings of 1200 x 1 @ 1ohm is not based on a 12 volt electrical system. I believe Kicker bases on a 14.4 volt electrical system. So you'll be running at an even lower RMS than 600 watts per sub with a 12 volt electrical system. One other thing is a stock alternator will not keep up with 2 KX1200.1's, it probably couldn't even keep up with 1. Just because you're getting another battery, you will also need a High Output alternator to keep your electrical and charging systems functioning properly, and to produce enough power to allow the KX1200.1's to function to their fullest potential. Look at around another $400 - $600 for a quality HO alternator.Squirrel

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Sorry, couldn't edit my last post. The last paragraph should read... One other thing is a stock alternator will not keep up with 2 KX1200.1's, it probably couldn't even keep up with 1. Even though you're getting another battery, you will also need a High Output alternator to keep your electrical and charging systems functioning properly, and to produce enough power to allow the KX1200.1's to function to their fullest potential. Look at around another $400 - $600 for a quality HO alternatorSquirrel

"No more Cpt. Kirk chit chat"

If its too loud, then you're too old

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