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View Full Version : Help with my L7 design



hoodkid
04-20-2006, 01:20 PM
I'm making another box for my l7 the design i used from Moe @ 2.95 cb @ 34hz just isnt loud enough so I'm going with kickers design 2.5 cb @ 38hz, but i was wondering how much longer would i have to make the port peice if i want the tuning to be 36 instead?

http://i3.tinypic.com/vzui6v.jpg

photocrazy8
04-20-2006, 01:25 PM
where you lookin to hit the lows or the highs? tuning to 34+ is not that good for everyday listening. i would make just what kicker says. they have three diff boxs for the L7, make the bigest one.

hoodkid
04-20-2006, 01:30 PM
I did do the biggest one and didnt like how it sounded, and i asked around and heard that L7's start to "shine" in the 35+ up range

photocrazy8
04-20-2006, 01:32 PM
I'm making another box for my l7 the design i used from Moe @ 2.95 cb @ 34hz just isnt loud enough so I'm going with kickers design 2.5 cb @ 38hz


i thought you have not make the kicker one yet, only moe's?

hoodkid
04-20-2006, 01:33 PM
well moe was the closest to kickers biggest recommended specs

hoodkid
04-20-2006, 01:34 PM
they recommend 3.25 but 2.95 to me was fairley close, and i heard a similar setup at 2.5 @ 38hz and it was way louder than mine

photocrazy8
04-20-2006, 01:34 PM
this is for one 12 right? how many watts is it getting?

hoodkid
04-20-2006, 01:41 PM
yes @ 1200 watts

photocrazy8
04-20-2006, 01:49 PM
ok, kickers largest for a 12 L7 is 3.25 @ 37 Hz, for kicker subs i go by their specs and i have herd them get crazy loud. idk why kicker always tunes pretty high. cause i know JL and other companies tune low. so i would just make that 3.25 @37. if you want more lows then go with a moe design and tune to about 32Hz. from my understanding, tuning lower with let you hit the lows more. tuning for 35+ is manily used with test tones for competitions and that box will only sound good at that one Hz. more air space lets the sub move more producing more SPL. if you want to do some reading search for threads, they are lots.

hoodkid
04-20-2006, 01:53 PM
well im going to use trial and error on this box and want it to be 2.5 @ 36, and i have talked to people who have contratsed low & high tunings with kickers and most people like the higher tunes with kickers

photocrazy8
04-20-2006, 01:56 PM
i would agree, i made the bigest box kicker recommends for a 10L7 and its only getting 500 watts and it does some damage. and it sounds very nice for every day driving.

hoodkid
04-20-2006, 01:57 PM
what would be the up & downs of a box at 2.5 than a box at 3.25 both at like 37 hz

photocrazy8
04-20-2006, 02:10 PM
the larger box will give you more output, but going way too big like 8 cubs + will not give that much output at all cause there will not be enough resistance in the box.

hoodkid
04-20-2006, 02:13 PM
I think im going to just do 2.5 @ 38 and see how it works, out :), still would like to make it 37hz instead, fi my port peice is suppose to be 15.75 long and i make it 16.25 what do you think my tuning would be?

photocrazy8
04-20-2006, 02:21 PM
im not sure, i have not learned to design boxes yet, im very good at making them and i understand the relation between box size and tuning Hz, so soon i will be learning how to design and tune a box.

hoodkid
04-20-2006, 02:22 PM
I use Winisd pro and BBp6, but sometimes there caculations dont come out right

photocrazy8
04-20-2006, 02:28 PM
winisd is not that great lol i just ask people on here

hoodkid
04-20-2006, 02:42 PM
i noticed.......:(

hoodkid
04-20-2006, 02:43 PM
by the way how are the lows on that 10in l7

photocrazy8
04-20-2006, 02:59 PM
they are pretty good for a 10 i was impressed.

DarkFox
04-20-2006, 10:58 PM
seeing as you have some experience with L7s. I am about to build a box for a friend for some 04 L7 15s and the tunning was gonna be like 32hz. Too low you think?

photocrazy8
04-20-2006, 11:27 PM
well what type of sound are you looking for?

DarkFox
04-20-2006, 11:32 PM
I want something thats gonna sound good and hit hard... Not to concerened with the meter and the person listens mostly to rap. Gonna have 2kW to the 2 15's