Kicker L7 Low and Clean, Box inside!
Printed From: the12volt.com
Forum Name: Car Audio
Forum Discription: Car Stereos, Amplifiers, Crossovers, Processors, Speakers, Subwoofers, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=78350
Printed Date: May 13, 2024 at 9:14 PM
Topic: Kicker L7 Low and Clean, Box inside!
Posted By: jeffchilcott
Subject: Kicker L7 Low and Clean, Box inside!
Date Posted: May 27, 2006 at 7:08 AM
Alright, after alot of work on designing a street box for A 12" kicker L7 I have come onto something that has worked very very well
The Test's were conluded on a stock battery and alternator which were slightly underpowering the amp, the lights were dimming
The amp that was powering the sub was A kicker ZR600 which has a rating of 150x2 or 600x1 @ 4ohm. Our testing showed 420 watts RMS with a peak of over 800 with a bettery battery in place
The box measured 3.65 cu ft internal before port displacement, with a 2.25x13.25x27 inch slot port
The setup was capable of 142.6 db on the term-lab meter at 40hz! in a honda civic coupe.
The same box was capable of 145.1db in a mazda B2200 pickup!
This again was using (1) 2004 Kicker L7 12" sub with a Kicker ZR600 amp producing 420WRMS!
It moves a crazy amount of air throughout the cabin, and hits extreamly extreamly low, but remains very very clear for SUB bass frequencys.
I have had alot of people ask me about a good street box for the L7's, but we have been unable to work on anything as we have been too busy running USACi shows this year untill now.
I will be trying that bxo today with 2 subs in it just to see what it does to the response curve and frequency.
I will be sure to list anymore results as I come out with them!
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Replies:
Posted By: Silvrefox
Date Posted: May 27, 2006 at 7:35 AM
Sweet! Good to see someone on here that actually likes Kicker and can prove their worth.
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BOOSH!!
Posted By: kirktcashalini
Date Posted: May 27, 2006 at 8:22 AM
thats pretty impressive man, I'm glad you are a knowledge sharer instead of someone who wants to luck up the formula for sucess lol.
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99 Blazer LT. Yellow Top. Big 3. Infinity Kappa Speakers All Around. Jensen CD/DVD flip out. 2 Infinity Kappa Perfect 12DVQs powered by a Alpine PDX600.1 (in one custom box, building a FG box)
Posted By: jeffchilcott
Date Posted: May 27, 2006 at 9:04 AM
not a problem, I was just really trying to find a way to make the Kicker L7 Loud, clear, deep, and tight....it has a very smooth response in all feilds so far!
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: luckydevil
Date Posted: May 27, 2006 at 10:56 AM
Good stuff!
You said the amp was underpowered, any idea what the output of the stock alternator is?
Posted By: jeffchilcott
Date Posted: May 27, 2006 at 11:16 AM
The stock alternator is a 85 amp at crusing speeds.....but I think it has a max hot output of less then 60 amps at idle.
I was just testing a real world scenario, I might go ahead and test it with the HO alt and Kinetik battery and some real power today to see, I am going out to revamp the box again right now, to try and improve on it!
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: Aruman
Date Posted: May 27, 2006 at 12:01 PM
that's great Jeff, in what year honda civic, seats folded down?
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Shaking The Neighborhood
Posted By: jeffchilcott
Date Posted: May 27, 2006 at 12:34 PM
98 civic coupe. yes the seats were folded down.
I cut the port down to 24 inches and it does alot better for all frenquencys instead of just realy really low.
I will meter it sometime later today when I go back out to the garage!
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: supradude
Date Posted: May 27, 2006 at 3:35 PM
Thats pretty good stuff, Jeff. I have a 12" L7 that I got from a guy for a little of change. I might try and see how it'll do in my Supra!!
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'85 Toy
Posted By: jeffchilcott
Date Posted: May 27, 2006 at 5:51 PM
It fell off a little and did a peak number of a 142.1db But I decided to throw late night tip in just for fun, and it was able to do 140.6db on one of the notes in the song! It averaged about 138db during that whole song.
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2009 0-1000 Trunk WR 154.0DB 2009 1001+ Trunk WR
2007 USACI World Champion
2007 World Record
2006 USACI Finals 2nd Place
Posted By: fakepete
Date Posted: May 29, 2006 at 7:24 PM
I love L7's. I picked up a pair of 15's back in '02 and have been running them hard ever since. Five cubes, a 21 x 4 slot port and 1200W for each makesthem sound great. I was afraid the big box and ports would make them sound sloppy, but they stayed clean and punchy. Never got it metered, but its enough to blur my vision. I often wonder what kind of numbers I would hit, I guess I have to find some place to take it.
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