so i had finished my box and after sub displacement and port its 2.5 cubic feet tuned to 32 hz
It seems to have lost some out put bu plays the lows amazingly but when turned up seems to have more mechanical noise from excursion
the Port is 3X14.25 and 45 long and has some 90 degree turns to make it fit
Would i be better off with a smaller box and a long port with no bends? and what do you recomend as a good frequency to hit lows but not the loss of output?
I would of had it around 2.0 cubes @ 32hz. Your port length should have been more so around 40" long to get a tuning of 32hz. The bends in the port won't be the problem.
Here is my first box. Im gonna be making the one in the picture shawn and glasswolf talked about and do the long port with the corners rounded, this weekend or next. haha Thanks for all your help everyone and ill post pictures when i'm done and what it sounds like
One last thing, would 4" port width be good like you said? or should i go even bigger?
4" was for a round port. If you're doing a slotted port, then a 3" opening is fine. The W7 moves a lot of air. If the port opening is too small, this can cause port noise when using round ports.
well, the problem is the larger the opening, the longer the port will have to be internally, so the bigger the box ends up being. 4" is fine though if that's what ya like
??? Aero ports are available in 6", (more than one can be used as well to reach the desired portage area.)
I've been happiest with the performance of flared-round ports versus slotted in every application when sound quality took precedence over SPL. But thats just my personal preference.
Either way, I like the your sub. The W7 is a good sql woofer, one of my favorites
If your going to be using a slot port for the 12W7, if 14.25 is the height of the port (which would be the same as you had before) I would have the port 2.25" wide x 14.25" tall. This would give you around 16 sq. inches of port per cubic foot (if your doing 2 cubes @ 32). You could make it 2" and be fine as well too.
thanks Zach ya I love the sq of the w7 its Amazing! Haha and bassman I will be making it the same height again and ill probably do 2.25 for the width. Thanks for the help! And I shouldn't get any port noise?
That's a good amp, you're pushing more rms to yours than I am mine. I'm running a 500/1 to mine. I'd like to get a 1000/1 but there are a few other things I want to do before getting a new amp. That'll be the last thing I do. I'd like to get my 300/4 fixed, a second battery for the trunk, a HO alt, then a new sub amp. My sound is pretty good though on only 500 rms. My car is rather small, plus a hatchback so it does pretty well.
