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View Full Version : My port area debate.



Buck
09-20-2011, 01:23 AM
I have 2 Fi BL 18's. Assume 1200w to each, in ~14 cubes tuned at 28 hz.

The port height is going to be ~7.5.

I was thinking of doing 180 square inches of port. That leaves my vent mach at .07 (winisd). My current box is 174.25 square inches of port, so I really wouldn't be changing a whole lot.

I'm not sure how much port area I want. It's easy to decide how much to do for others based off what they want, but I'm not sure what I want to do with this yet. If you know me, you know I want lows but a good overall daily driver. I don't play anything above 55 hz.

To top it all off, my woofers mock up terribly in winisd. The graph is of absolutely no use to me (gain graph). So I'm not sure what I want to do. What do you think I should do, or what would you do?

dumple
09-20-2011, 01:26 AM
Conundrium the designer can't design his own, would mylil be rebuilding said box or starting from scratch

Phoenix Risen
09-20-2011, 01:27 AM
for daily setups ive always liked more port area over less, but when it comes to personal preference it could be any of 100 answers.

Buck
09-20-2011, 01:28 AM
Conundrium the designer can't design his own, would mylil be rebuilding said box or starting from scratch

I am well capable of designing my own, I just can't make up my mind.


for daily setups ive always liked more port area over less, but when it comes to personal preference it could be any of 100 answers.

That's what I'm looking for, what YOU would do in my shoes.

sacsking916
09-20-2011, 01:32 AM
I would do more port area if it were me. We all know you love your lows..... who doesn't love lows for that matter?

Buck
09-20-2011, 01:33 AM
I would do more port area if it were me. We all know you love your lows..... who doesn't love lows for that matter?

Some people I know. They like the highs (50 hz's).

sacsking916
09-20-2011, 01:34 AM
Some people I know. They like the highs (50 hz's).

Meh....

hispls
09-20-2011, 02:55 AM
I got that much port area for 3 12's in 9.5 cube.... go big or go home...not like space is an issue with a build like that.

cyn
09-20-2011, 03:11 AM
GOOOOOOOO low.... tune it to 22 or 24 wth not ? lol

Bumpin' Goalie
09-20-2011, 03:16 AM
Hide it all you want, but you would rather move some more air over anything else, unless something has changed.

What's the purpose of this rebuild, if I may ask?

galacticmonkey
09-20-2011, 01:55 PM
If you're trying to play low, go with a small port. You would be surprised how small of a port you could get away with.

Buck
09-20-2011, 11:58 PM
Hide it all you want, but you would rather move some more air over anything else, unless something has changed.

What's the purpose of this rebuild, if I may ask?

First box is leaky as crap.

Buck
09-21-2011, 01:04 PM
bump

Buck
09-24-2011, 10:05 PM
Bump again. I keep going back and forth. Dunno what I want to do.

Dirtrider4eva
09-24-2011, 10:13 PM
if i were you,
i personally would run more port, but change the design. right now, i dont know what the layout of your box is/was.
but i like flared ports.
they seem to offer good daily sound, as well as hitting the lows

Kangaroux
09-24-2011, 10:16 PM
Depending on how deep the box is, your port will only reach so far. For example, your port may only need to be 36" long, but if your box is 48" long, you can extend your port until its at the correct point from the rear wall, and then increase your port area until you're back to the original tuning you are aiming for. I like to use this if I'm unsure on how much port area to use. Unless you're doing port wars or something, more port area is usually better. Why only have 12 sq. in of port per cube when you can have 16 or even 18?

Dirtrider4eva
09-24-2011, 10:19 PM
go to big.. and you can run into problems.

akheathen
09-24-2011, 10:49 PM
umm, first of all, what is it going in? i perfonally pick port area dependent on cabin size, driver specs, tuning frequency, and desired range.

Buck
09-24-2011, 10:52 PM
03 Exploder, Fi BL's. Don't know about the second two yet.

akheathen
09-25-2011, 01:25 AM
oh, well with just those 2, i would suggest not near 12"/cu, lol

Buck
09-25-2011, 07:47 PM
oh, well with just those 2, i would suggest not near 12"/cu, lol

What?

Kangaroux
09-25-2011, 07:49 PM
What?

He's sayin go big or go home :fyi:

Buck
09-25-2011, 07:53 PM
Thanks for the translation, yo. Little foggy today.

akheathen
09-26-2011, 02:03 AM
not necissarily, but mid/large port is the range i would go with without knowing more. "go big or go home" works with a pretty peaky, but loud result, where you really have to watch for un-loading in areas, imho

galacticmonkey
09-27-2011, 07:24 PM
A bigger port isn't always best, depending on what you're trying to do.