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Biohazard
05-22-2003, 02:02 PM
OK, I have a 15"XXX and i would like to build meself a box. Lookin for around 6cu ft. ported and i will be sending about 1500rms to it.

Can anyone tell me how to tune it to a certain frequency and what not..
i was lookin at something around 1.5ft(deep)x1.6ft(tall)x2.5ft(width)

any ideas? i was gunna put the port on the right side too..will that made a difference?

Please help!

mgaidica
05-22-2003, 09:00 PM
if u didnt already get Jmac..


http://www.loudspeakers101.com/VentCal1.htm

Biohazard
05-23-2003, 05:53 AM
jmac....i have tried before to get you :)

Biohazard
05-26-2003, 04:03 AM
jmac i can't get a hold of you!

Randy Savage
05-26-2003, 04:04 AM
Originally posted by Biohazard
jmac i can't get a hold of you!

give me dimensions...I'll work out port for you.

What you wanna tune it to?

Biohazard
05-26-2003, 01:20 PM
Originally posted by snova031
give me dimensions...I'll work out port for you.

What you wanna tune it to?
thats just it...i don't know what i want to tune it to :(

Randy Savage
05-26-2003, 02:51 PM
Originally posted by Biohazard
thats just it...i don't know what i want to tune it to :(

What are you looking for out of it? Anywhere from 28-40 would be ok for daily...

Biohazard
05-27-2003, 04:45 AM
i want about 65% spl and 35%sq...basically...i was thinking about 35 hz...but i dunno

Biohazard
05-27-2003, 07:27 PM
Originally posted by Jmac
I thought this was going to be a competition box ?
thought about that...but i dunno, maybe i will try makin one with switchable ports...anyone have any ideas or thoughts on that?

Jmac?

Randy Savage
05-27-2003, 07:30 PM
you can do a switchable port...but if you don't plan on competing, it's really pointless.


35 Hz would be pretty good for that ratio...

Biohazard
05-28-2003, 02:30 PM
i am planning on doing some local competitions at like Future shop and A&B sound...which are kinda like best buy and stuff like that....nothin big because i just don't have what it takes...i was thinkin 36hz but 35 is pertty close...


if u go higher do that mean sq gets better?

Biohazard
05-28-2003, 08:21 PM
ok well now i am thinking about 5cuft tuned to 34....is that ok? or not really that loud?

Miller
05-28-2003, 09:35 PM
How far off of the back of the box should a slot port be??? is 3 inches from the back of the box from the end of the slot port enough??

mgaidica
05-28-2003, 09:45 PM
the width of the port... but ide say 3" to keep it safe

Miller
05-28-2003, 10:01 PM
My box is 14.75 inches deep (including .75 thickness of front board, not back). So I can either go 1.5"x 14.6" x 12" tuned to 35hz (leaving 2.75 inches from back). Or I can go 1.75" x 14.6" 13" tuned to 35 hz (leaving 1.75 inces from the back). Which should I choose? Should I go with 1.75 width and just tune it higher to make the port shorter??

mgaidica
05-28-2003, 10:44 PM
ide make the port as wide as possible.. while keeping it tuned to 35 hz.... so that second option u gave..

Miller
05-28-2003, 11:46 PM
I would to...But then it only leaves 1.75 inches from the port to the end of the box.....and it is 1.75 inches width.... so that would be exactly the bare minumum distance....Port noise?

Biohazard
05-29-2003, 04:03 AM
do u count the air in the port as part of the total volume?

Biohazard
05-29-2003, 04:52 AM
thanks for the help!

Biohazard
06-03-2003, 02:37 AM
jmac any luck whatsoever?

i have tried a few ideas...what do u think?

Biohazard
06-03-2003, 03:49 AM
u didn't get it? hmm..i will try it from school tomorrow...