Quick round port question, please help thanks.

[oxsign 5,000+ posts]

Box is 49.5"W x 20.5" T x 24"D (roughly 11.8 cube gross) with 2 15"s (.36 displacement). I have some 8.5" Sono tube sitting here and was thinking of using it as a port for this box. Ideal tuning would be 28Hz-30Hz, how long would I need it? I have 8" from the face of the box to the back of the seat of some needs to be external.

Thx for the help guys.

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[C1500martin 10+ year member]

if my calculations are right at 10" long you get 29hz tuning

 

[oxsign 5,000+ posts]

Ok cool, THX. I was thinking around 12", but that sounds better lol.

 

[C1500martin 10+ year member]

Ok cool, THX. I was thinking around 12", but that sounds better lol.

dont quote me though! im learnng to use this torres thing today so there might be something im not doing right lol

im sure your tubes thickness plays a part aswell but not sure how to input it

 

[Jeffdachef 5,000+ posts]

you might want to model it out on winisd, plug in how much power you are putting on it and check the rear air velocity.