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View Full Version : WINisd question when selecting multiple ports



mcsoul
08-14-2008, 12:53 AM
When I select 2 ports instead of one, the
required legnth of course goes up. However,
I cannot tell if the legnth is now split among the 2 ports
or if each one needs to be the given legnth.

Anyone know?

mapolley07
08-14-2008, 12:56 AM
that is the length of each port

so if the port length is listed as 24 in, then EACH port needs to be 24 in

kovemaster559
08-14-2008, 12:58 AM
win isd is ghey now, its ok but i dont fell its acurate id rather do it by paper

mcsoul
08-14-2008, 01:06 AM
that is the length of each port

so if the port length is listed as 24 in, then EACH port needs to be 24 in

Thank you.

mapolley07
08-14-2008, 01:10 AM
win isd is ghey now, its ok but i dont fell its acurate id rather do it by paper

i don't know how to figure tuning by paper yet....would like to learn but for now I'm using winISD

mcsoul
08-14-2008, 01:14 AM
I don't know how to model fr graphs on
paper fo sho.

mcsoul
08-14-2008, 01:22 AM
What would you do with a trunk car and a ported box?
I cannot wall off the trunk. I was thinking I would face the
woofers forward towards the back seat (right up on it)
and fire one or two ports on back/bottom part of the sides.

like this box:
http://www.bicostereo.com/images/uploads/SPG555PS.jpg

How does that effect delay? How do you compensate?

mapolley07
08-14-2008, 03:17 AM
from my experience, firing subs directly into the back seats is not good. the subs won't sound loud at all

either fold down the seats and fire into the cabin or fire to the rear. the other option that works and I use is have the box at the rear of the trunk firing toward the front of the car

mcsoul
08-14-2008, 11:02 AM
Thanks, I think I'll fire to the rear. I just can't fit the
ports or vent on the same plane (side of the box)
as the speakers. I do n ot want to choke off the
cabin with too much box height.

Basically, I will do a box like above, but have the woofer
on the trunk side not the back seat side. The ports should
be 2-3 inches back from the woofer along the sides, loaded
6-8 inches from the side wall of the car on each side.