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View Full Version : Best sub and port placement? **PICS**



bumpincrv
02-05-2008, 12:19 AM
Im planning on building a new box for my DD 9515 In my 1999 Honda CR-V, Right now i have both sub and port facing back, box is tuned to 50-55 hrtz I would like to build a box that is tuned a bit lower somewhere around 32-34 hrtz. What would be the best sub and port placement

box needs to be 31 1/4" wide and no taller than 18" can go all the way back to the back hatch dont know the measurement on that right now

http://i73.photobucket.com/albums/i235/pachinka09/000_0537.jpg
http://i73.photobucket.com/albums/i235/pachinka09/000_0624.jpg
http://i73.photobucket.com/albums/i235/pachinka09/000_0625.jpg

bumpincrv
02-05-2008, 12:29 AM
Anybody?

mlstrass
02-05-2008, 12:32 AM
Common for an SUV is sub up port back, but "best" can only be determined by trial and error.

Why the 50-55Hz tuning???

bumpincrv
02-05-2008, 12:35 AM
no thats what the box is tuned at now i would like to drop to 32-34

bumpincrv
02-05-2008, 12:37 AM
see but i would also like to go bigger in box size so the box may be aginst the back hatch im not sure

MikeyB
02-05-2008, 12:39 AM
I vote sub up port back

mlstrass
02-05-2008, 12:40 AM
I was questioning why the original box was tuned so high....

Around 4-4 1/2 cubes should work for that sub if it's like a 9515.

bumpincrv
02-05-2008, 02:56 AM
Ttt

thegreatestpenn
02-05-2008, 03:01 AM
you can lower your tuning a few ways. one is to lessen the net volume of the box by putting wood blocks or extra bracing inside (but not within the port). another thing you could do is break the port into separate sections so its not just one port, but 2 or 3 or 4

BrianChia
02-05-2008, 05:08 AM
you can lower your tuning a few ways. one is to lessen the net volume of the box by putting wood blocks or extra bracing inside (but not within the port). another thing you could do is break the port into separate sections so its not just one port, but 2 or 3 or 4

Wrong.

If you reduce net volume of the enclosure while maintaining port length and port area you will increase tuning.

If you reduce port area while maintaining port length you will lower tuning.

PV Audio
02-05-2008, 07:55 AM
Wrong.

If you reduce net volume of the enclosure while maintaining port length and port area you will increase tuning.

If you reduce port area while maintaining port length you will lower tuning.And as we all know, the changes aren't exactly linear. I tried to make a linear plot for algebra I in high school about port tuning vs. port area, and it just doesn't work without taking Vb and length into account (contrary to what I was told back then). :crap:

etznova
02-05-2008, 11:41 AM
Hey CR_V your box is not tuned to 50-55 its tuned to about 40 i should now i built the box

etznova
02-05-2008, 11:49 AM
We are not concerned about reusing the existing box guys

he was asking which configuration generaly yeilds the best results in an SUV and i figured it was sub up port back, like stated above

and i think a net vol. of 4.5 to 5.2 cubes

bumpincrv
02-05-2008, 05:57 PM
We are not concerned about reusing the existing box guys

he was asking which configuration generaly yeilds the best results in an SUV and i figured it was sub up port back, like stated above

and i think a net vol. of 4.5 to 5.2 cubes


Excatly

bumpincrv
02-06-2008, 12:32 AM
Ttt

bumpincrv
02-06-2008, 12:42 AM
Ttt

bigbowtie
02-06-2008, 01:43 AM
sub in ur A** and ur car at the junkyard?:D

bumpincrv
02-07-2008, 12:01 AM
sub in ur A** and ur car at the junkyard?:D

you took your subs out BAN?

bumpincrv
02-07-2008, 12:28 AM
Ttt

bumpincrv
02-07-2008, 07:25 AM
Goodmorning

bumpincrv
02-07-2008, 03:47 PM
ttt

Supergumby5000
02-07-2008, 03:52 PM
why do you keep bumping this lol?

i'de do subs up, port back.

bumpincrv
02-07-2008, 03:55 PM
but the backe may be up against the back hatch

iamamp3pimp
02-07-2008, 04:00 PM
you can lower your tuning a few ways. one is to lessen the net volume of the box by putting wood blocks or extra bracing inside (but not within the port). another thing you could do is break the port into separate sections so its not just one port, but 2 or 3 or 4

that doesnt do anything....

iamamp3pimp
02-07-2008, 04:02 PM
then make the box not go all the way back and do sub up port back

dont come asking for advice and turn it away when it isnt what you want to hear.

i mean really come oon now.


you can do it however you like, but waiting for the answer that you want to hear is a terrible CAUSE...

bumpincrv
02-08-2008, 12:59 PM
Well i aploligize but i figured to get the amount of cubes that this requries and still keep my back seat and window line it would have to got to the back hatch i will measure and check. Thank you