are 4.7 cubes enough for 2 12 inch l7

[Bomtillington]

Hi guys I bought 2 12 inch l7s in a crappy sealed box and they are very loud I was building the biggest box I can fit and its 4.8 cubes ported at 33 hz with optimal port ratio will I get a major difference or am I wasting my time

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[mylows10 5,000+ posts]

should be fine ,but after port and sub displacement ,you wont have the full 4.7 cubic ft

 

[Bomtillington]

That is after port and sub but I want loud man will it be loud enough? What do you think for dbs

 

[pro-rabbit 5,000+ posts]

L7's love larger enclosures.

If you are actually getting 4.7 after displacements won't be to bad...depends on a few things..but all in all shouldn't be that bad. Much better then those prefabs for them.

 

[bgowdy 5,000+ posts]

That is after port and sub but I want loud man will it be loud enough? What do you think for dbs

if its 4.8 after sub and port displacement then yes it will be fine then

 

[Bomtillington]

Thanks guys for the help is a 35 hz tune for rap music okay or is it too high?

 

[SounDrive Pro Seller]

Thanks guys for the help is a 35 hz tune for rap music okay or is it too high?

It should be fine, your subs will still play frequencies a little lower than the tuning with authority. I like to set my subsonic filter to 10Hz below my tuning point and my subs still hit hard until they reach the point of the filter.

 

[Bomtillington]

Okay so I will tune to 35 hertz with a 5.5 wide 21 length and 13 height correct?

 

[SounDrive Pro Seller]

Okay so I will tune to 35 hertz with a 5.5 wide 21 length and 13 height correct?

20.75 length but yes the rest is correct

 

[Bomtillington]

Okay I'm gonn build tommrow I'll let you guys know how it goes!

 

[Bomtillington]

It just occurred to me that I need to mount two twelve's and the widest I can make the port is 4 inches and 13 high what would my length have to be

 

[SounDrive Pro Seller]

It just occurred to me that I need to mount two twelve's and the widest I can make the port is 4 inches and 13 high what would my length have to be

If the box is 34 inches wide and you mount 2 12" subs you'll have 10 inches left (8.5 after counting the thickness of the MDF on the port walls). The subs lip just has to be even or close with the side of the box and the two subs have to be really close to each other

 

[Bomtillington]

Can the port have triangle braces in it or will that create noise because I wanna use the right wall as on side of the port to save room but I have two trangle braces on that wall already what should I do