blowthrough box tuning question

[galacticmonkey 5,000+ posts]

I think he means if most people are going to cut a massive hole in the body of their vehicle, they will load it up with some serious equipment.

Personally I would tune a little higher for daily if you want to do the higher bass notes too, probably 36-37hz. It wont really drop the tuning, but if the box is wayyy back there, it will definately play low because if the box is way deep in the bed, the low notes will have a good ways to develop a full wave on the lower notes as well.

 

[treylittlefield 10+ year member]

What is your electrical going to look like?

well i have a 250 amp alternator and a HC1800 up front. 2/0 big 3. 2 runs of 2/0 to back. thats all i have at the moment. i need a dual alternator bracket and some more batts prob...

 

[treylittlefield 10+ year member]

I think he means if most people are going to cut a massive hole in the body of their vehicle, they will load it up with some serious equipment.
Personally I would tune a little higher for daily if you want to do the higher bass notes too, probably 36-37hz. It wont really drop the tuning, but if the box is wayyy back there, it will definately play low because if the box is way deep in the bed, the low notes will have a good ways to develop a full wave on the lower notes as well.

so 2 btl's and 4500 watts isn't serious?? lol

 

[KHARPS 10+ year member]

I think it is. I only went with 2-12s because I didn't want to use up all the bed space. You'll still be loud bro. And I'll do a new design for you soon...I'm kind of busy for the next few hours for my sister's bday.

 

[TnT_Sounds 10+ year member]

The distance in space that there is doesn't do much of an audible differnce. Also I would personaly go with more power.

I had 6k on my 2 12" BTL's in a blow-through.

 

[treylittlefield 10+ year member]

The distance in space that there is doesn't do much of an audible differnce. Also I would personaly go with more power.
I had 6k on my 2 12" BTL's in a blow-through.

well i also am usin this daily and dont want any chance of blowin em. all i have is one alt now and i'm tryin to find a bracket for another one

 

[treylittlefield 10+ year member]

I think it is. I only went with 2-12s because I didn't want to use up all the bed space. You'll still be loud bro. And I'll do a new design for you soon...I'm kind of busy for the next few hours for my sister's bday.

no prob bro jsut shoot me a pm if u ever get the chance

 

[treylittlefield 10+ year member]

The distance in space that there is doesn't do much of an audible differnce. Also I would personaly go with more power.
I had 6k on my 2 12" BTL's in a blow-through.

so 4500 wouldnt be enough??? lol

 

[Mr. Slate 10+ year member]

Trey, usually if people do a blowthrough, they usually do more then 2 12s.

 

[SWFL 10+ year member]

I am doing 4 15's on 4k for now bandpass 4th order

 

[treylittlefield 10+ year member]

Trey, usually if people do a blowthrough, they usually do more then 2 12s.

i would seriously love to do like 6 12's but i think 2 btl's will be plenty. i mean i'm still in school and money is not the easiest thing to come by. lol yal makin it seem like it aint gonna be loud or somethin gah. lol

 

[Canaan 10+ year member]

i kno this sounds stupid, but Fi's web site says to tune BTL's to 32hz. well someone said that if i do a blowthrough and the ports are far enough away from the cab wall then it would tune it lower or somethin like that...anyone have any idea bout this?? my subs will be angled and the ports in the middle

To a point...kinda.

But in reality, if the subs/port are back away from the cabin in a cut-thru and have a area between them, it will act like a 6th order bandpass to an extent.

 

[SWFL 10+ year member]

whats the diff in bandpass vs ported as far as tunning

say a ported box at 33hz to play what that ported box plays at what would the bandpass 4th order be tuned to

then say a 4th order tuned to 45hz whats that compared to a box ported will play??

Thanks

 

[dappa5 10+ year member]

try this spl http://www.diysubwoofers.org/bnd/4thord1.htm

with the sheer # of threads youve have started and posted in reguarding 4th orders I figured you'd be a real expert by now lol

 

[SWFL 10+ year member]

hey, did you ever get a response from 80 or make up a design for me, also when could you do the cutout, are you busy everyday or what?

pm me if you want

Thanks