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Box for 4 Type R's

 

C. Reming
Silver Member
Username: Northomaha

Post Number: 499
Registered: Mar-06
Posted on   
Hey Guys, Im doing a box for a friend. We are doing 4 type R 15's. He is going for SPL. I tried to convince him to go for interchangable ports for SPL and Daily but no budge on that. What should i tune this box to? its 12 Ft3 before port displacement. could you also include the port area needed to tune the box to your suggested hz
 

[...Rovin...]
Platinum Member
Username: Rovin

4 10 Pioneer...

Post Number: 12051
Registered: Jul-05
Posted on   
er - correct me if im wrong & im no spl expert

but when u doing a box for spl u 1st find out the resonating peak freq of the vehicle by running a freq sweep so for ex if its peak freq is 45 u tune ur spl box very close to 45hz ....
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 500
Registered: Mar-06
Posted on   
hes not going that deep into it. hes not competing but he wants something tuned high.
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 501
Registered: Mar-06
Posted on   
ok lets just say he wants his enclosure tuned to 42hz. how much port area does he need?
 

KiLLa
Gold Member
Username: Johnfiac

A-ToWn, 9515 thumpin... What u bumpin?

Post Number: 3465
Registered: Mar-06
Posted on   
42hz isnt to much a SPL box tho... 40hz is pretty good for SQL..
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 503
Registered: Mar-06
Posted on   
SQL is more around 32-36. 42 is pretty high.
 

KiLLa
Gold Member
Username: Johnfiac

A-ToWn, 9515 thumpin... What u bumpin?

Post Number: 3474
Registered: Mar-06
Posted on   
thats a better SQL but 40 is still good. It still depends on subs tho... I loved it when i ran 2 9515F's at 40hz in 12cu.... XD
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 505
Registered: Mar-06
Posted on   
yea there recommended at 40 tho. you guys think 48 would be good enough. and if so, how much port area?
 

Drivingreckless
Gold Member
Username: Drivingreckless

DD 9515f, 148.2 db Mov...

Post Number: 4074
Registered: Apr-06
Posted on   
make a 8 cube net box...tuned to 40hz...with 100sqinches of port....
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 506
Registered: Mar-06
Posted on   
thats too small for the R's. the lowest air space recommended is 2.25 each
 

[...Rovin...]
Platinum Member
Username: Rovin

4 10 Pioneer...

Post Number: 12055
Registered: Jul-05
Posted on   
the least i would do for any ported 15" sub is 3cuft but closer to 4cuft is the norm for some 15s ...
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 508
Registered: Mar-06
Posted on   
yes thats why im going with a 12ft3 box. what portspace do i need for 48 hz?
 

sean
Gold Member
Username: Insearchofbass

Post Number: 6273
Registered: Jun-04
Posted on   
wow 48 hz you gotta let me know how this box works daily cuz im not expecting good things
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 509
Registered: Mar-06
Posted on   
its what he wants, it honestly shouldnt sound that bad. this guy is used to kicker comps in prefab boxes so itll be an improvement. HOW MUCH PORTSPACE IS NEEDED FOR 48hz SOMEONE!
 

C. Reming
Silver Member
Username: Northomaha

Post Number: 512
Registered: Mar-06
Posted on   
can somebody please tell me how much port area i need. none of the calculators ive found online are for slot ports.
 

Rob
Gold Member
Username: Th3pwn3r

Post Number:...

Post Number: 4457
Registered: Jul-06
Posted on   
48hz for daily is not a good idea lol.
 

sean
Gold Member
Username: Insearchofbass

Post Number: 6291
Registered: Jun-04
Posted on   
straight from the dd website

You need more port area for a clean sounding, high output system. The DD port formula is this: 16 sqin of port area per cubic foot of box volume.
 

sean
Gold Member
Username: Insearchofbass

Post Number: 6292
Registered: Jun-04
Posted on   
agreed in a major way with rob dont do a 48 hz tune highest I would go is 40 hz but I HATE the lack of fullness the subs have at that tune and beat on them too hard with the wrong frequencies and your in for fried subs
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