Help with port sizes

 

Bronze Member
Username: Zepcoe

TN Us

Post Number: 34
Registered: Apr-06
Im trying to use this box calculator and it needs port sizes. what port sizes would i use on a box 35" W by 13" H?
 

Platinum Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 11500
Registered: Dec-03
inner diameter?
3" for subs 10" or smaller
4" for 12" subs
6" for 15" or larger subs
that's if you use one port per sub, those are minimum port diameters.

as diameter increases, so will length.
 

Bronze Member
Username: Zepcoe

TN Us

Post Number: 39
Registered: Apr-06
its (2) 12" eternals
 

Platinum Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 11502
Registered: Dec-03
so two 4" ID ports.
tune them to about 35Hz.

calculate for a single 12" and single port, then just build the box like you jammed two of those bxes together to fit both subs.
 

Gold Member
Username: Rzarector

Coquitlam, Bc Canada

Post Number: 1006
Registered: Dec-04
thats kinda vague gw a 12" explode isnt gonna need the same as a 12" XXX a sub that displaces more air will need a bigger port
 

Bronze Member
Username: Zepcoe

TN Us

Post Number: 40
Registered: Apr-06
i said (2) Audiobahn Eternals
 

Platinum Member
Username: Glasswolf

Wisteria, Lane USA

Post Number: 11504
Registered: Dec-03
not that big a factor. the minimum port size is just to reduce port noise, and ported enclosures limit excursion anyway so it's not like you're going to get enormous xmax from a vented box anyway.
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