6 10s in reg cab F-150 Design

[t1990le 10+ year member]

I would tune them below 40hz

I've had good luck in the 30-32hz area. Box size plays a part in it too.

Ok, ill see what I can do. Could I add the extra length externally to my aready planned design?

 

[RAM_Designs 5,000+ posts]

Ok, ill see what I can do. Could I add the extra length externally to my aready planned design?

Yep, it won't change anything other than the tuning, so keep box volume the same when figuring out the length of the port.

 

[t1990le 10+ year member]

Yep, it won't change anything other than the tuning, so keep box volume the same when figuring out the length of the port.

Ok, based on psp aero tool a 4.5 box at 32 is 23.5long which is 5.5 longer. I could add the extra 5.5in outside the box and be fine?

 

[RAM_Designs 5,000+ posts]

Ok, based on psp aero tool a 4.5 box at 32 is 23.5long which is 5.5 longer. I could add the extra 5.5in outside the box and be fine?

Yep.

 

[t1990le 10+ year member]

Yep.

Ok, thanks! I might try that first. //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif

 

[RAM_Designs 5,000+ posts]

Also, I got a little less than 4.5ft^3 after displacements, assuming that you have 16.25" of port inside the box.

5.19ft^3 before any displacements

-.5ft^3 for port

at least -.5ft^3 for subs

------------------

4.19ft^3

And that's without any bracing too.

 

[t1990le 10+ year member]

Also, I got a little less than 4.5ft^3 after displacements, assuming that you have 16.25" of port inside the box.
5.19ft^3 before any displacements

-.5ft^3 for port

at least -.5ft^3 for subs

------------------

4.19ft^3

And that's without any bracing too.

Crap I forgot about, bracing but the manual says that each sub is 60.4 in3? so 6 = .21 ft3?

 

[t1990le 10+ year member]

If I do the same box 58.5w x 10d x now 24h

Thats

6.3cu ft

- .5 for subs

- .523 for port (8in dia 18in long)

---------------------------------------

5.277 before bracing and about 1.2in of port sticking out of the box. Would that be better?

Port would be 19.2in long for a 32hz tuning

 

[RAM_Designs 5,000+ posts]

Crap I forgot about, bracing but the manual says that each sub is 60.4 in3? so 6 = .21 ft3?

That's weird, I've never seen a sub displacement that low, not even with an 8" sub.

 

[RAM_Designs 5,000+ posts]

If I do the same box 58.5w x 10d x now 24hThats

6.3cu ft

- .5 for subs

- .523 for port (8in dia 18in long)

---------------------------------------

5.277 before bracing and about 1.2in of port sticking out of the box. Would that be better?

Port would be 19.2in long for a 32hz tuning

You can do that. The extra air space along with the lower tuning will help out with the low-end for sure.

 

[Louisiana_CRX 5,000+ posts]

I've had good luck in the 30-32hz area. Box size plays a part in it too.

in that small abox I wouldn't tune those subs that low...thats why I said 40hz...If it was a larger box closer to specs then it would be fine.....

 

[t1990le 10+ year member]

You can do that. The extra air space along with the lower tuning will help out with the low-end for sure.

Alright, Yea the sub disp is wierd idk im just gona assume .5 like u said lol. They r not the biggest subs ive ever seen but i cant really see having all 6 at only .21. Ill measure out my truck tomorrow to see if that fits like i want it too. Thanks for all of the help man. Ill deff post a build log around new years. I gotta scrape up the extra dough for the box lol :/

 

[RAM_Designs 5,000+ posts]

in that small abox I wouldn't tune those subs that low...thats why I said 40hz...If it was a larger box closer to specs then it would be fine.....

Small box plus high tuning = big peak higher than usual in the repsonse curve...his peak would be in the 50hz area with a 40hz tune. A small box and a high tuning both kill low-end output, why would he want to do both?

 

[06goat 10+ year member]

Dont know if anyone said this but keep in mind to make sure your port is 4 inches from the bottom of the box. 8in port/2= 4 inches.

 

[RAM_Designs 5,000+ posts]

^^^He'll be fine with the 24" tall box he described a few posts back.