Help with my L7 design

[hoodkid 10+ year member]

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?

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[photocrazy8 10+ year member]

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 10+ year member]

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 10+ year member]

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 10+ year member]

well moe was the closest to kickers biggest recommended specs

 

[hoodkid 10+ year member]

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 10+ year member]

this is for one 12 right? how many watts is it getting?

 

[hoodkid 10+ year member]

yes @ 1200 watts

 

[photocrazy8 10+ year member]

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 10+ year member]

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 10+ year member]

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 10+ year member]

what would be the up & downs of a box at 2.5 than a box at 3.25 both at like 37 hz

 

[photocrazy8 10+ year member]

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 10+ year member]

I think im going to just do 2.5 @ 38 and see how it works, out //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif, 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 10+ year member]

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.