Quick question on ports

[cx-7heaven 10+ year member]

I need to know what this box is tuned to:

4.56 gross cu ft

port is 4.5d x11w x 11 long

thanks

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[skmfkr 5,000+ posts]

gross doesnt matter whats the net retard

 

[DonH 5,000+ posts]

net yo!

whats the net!

give dimensions of the box and i can figure out the net if you want. doesnt have to be inner dims just tell me outer

 

[cx-7heaven 10+ year member]

net is around 4.2

Dims: wedge box

40.25 w

20 h

16 d1

9 d2

 

[skmfkr 5,000+ posts]

lol did you just make one with random port area and port length? i think its like 41hz

 

[cx-7heaven 10+ year member]

No, this is a box somebody else made

 

[skmfkr 5,000+ posts]

oh i know kids back in high school would do ported boxes. but didnt know how to properly make one. actully one of my friends made one. and i think i figured it was like 1.5cf at 45hz for a audiobahn 12

 

[cx-7heaven 10+ year member]

This is the box that stroker 15 is in that I told you about the other day

 

[DonH 5,000+ posts]

hmmm

~41 hz bro

 

[cx-7heaven 10+ year member]

when you change port length what does that do?

 

[skmfkr 5,000+ posts]

shorter is tuning higher and longer is tuning lower. assuming the box stays the same net volume, but it will change a little if you make the port longer the sub has less space to use and the port shorter it has more room.

 

[cx-7heaven 10+ year member]

hmmm
~41 hz bro

Thanks much for your time.

 

[cx-7heaven 10+ year member]

shorter is tuning higher and longer is tuning lower. assuming the box stays the same net volume, but it will change a little if you make the port longer the sub has less space to use and the port shorter it has more room.

So, if I go to a smaller box, tuned to 30 hz my power handling will go up and tuning will be more daily correct?

 

[DonH 5,000+ posts]

in essence yes...but to small of a ported box will sound like crap. what driver?

 

[skmfkr 5,000+ posts]

yeh smaller boxes are more peaky or have a narrow freq response, but since your wanting to do spl it should be fine. kinda hard to get a good spl and daily box out of one box. say for example a good burp box would be like 3cubes at 40hz and a good daily would be 4cubes at 30hz. then you could do in the middle and 3.5 at 35hz which would be good for both imo