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psych0ticnemes1
06-22-2005, 09:59 AM
i used a calc that gave me 42.33 inches for the vent length... if i run it as an L along the back of the box, it would be the same as having a 42.33 long port right? it would just be an L instead of straight?

Moe Lester
06-22-2005, 10:04 AM
yep, be sure that you measure down the middle of the port though and account for end correction. www.jlaudio.com has a pretty good explanation of this.

psych0ticnemes1
06-22-2005, 10:17 AM
thanks, end correction is supposed to be 1.5 times port width i believe right?

psych0ticnemes1
06-22-2005, 10:25 AM
for example a 42 inch port using a 4" wide port, using the end calc would have to indeed end up being 44" long to account for end correction?

tRiGgEr
06-22-2005, 10:36 AM
If you need a 42" port, your port should measure a total of 40" down the middle. Using a side of the box for the port will cause the port to continue 1/2 of the width after the end of the port.

psych0ticnemes1
06-22-2005, 10:41 AM
If you need a 42" port, your port should measure a total of 40" down the middle. Using a side of the box for the port will cause the port to continue 1/2 of the width after the end of the port.


the tutorial says to add 1/2 of the width of your port on to the end of the vent length :/

Moe Lester
06-22-2005, 11:04 AM
the port sticks out 1/2 of the ports width further than the wood does is what they mean

psych0ticnemes1
06-22-2005, 11:17 AM
right, but how do i account for that? all i know is what the vent length calc is giving me (42)

tRiGgEr
06-22-2005, 11:20 AM
So measure down the middle of your port until you get 40" then that's it.

Is the port calculator you are using figuring for a slot port? Or a normal port?

http://www.carstereo.com/help2/Articles.cfm?id=31

This one has the option to pick a slot port and will automaticaly deduct the port end correction. Notice when slot port is selected it will deduct half of the port's width from the length. That is for the port end correction.

And you build custom enclosures???

psych0ticnemes1
06-22-2005, 11:30 AM
So measure down the middle of your port until you get 40" then that's it.

Is the port calculator you are using figuring for a slot port? Or a normal port?

http://www.carstereo.com/help2/Articles.cfm?id=31

This one has the option to pick a slot port and will automaticaly deduct the port end correction. Notice when slot port is selected it will deduct half of the port's width from the length. That is for the port end correction.

And you build custom enclosures???


yea, i didn't say i design em :) am learning though... my skill is with wood, not math

tRiGgEr
06-22-2005, 11:33 AM
So how skilled are you with wood? If I give you my wood what could you do with it? It's rather large and thick, you may have a hard time with it. Are your wood mastering skills expensive? I have a local wood expert who knows how to work with it;)

psych0ticnemes1
06-22-2005, 11:34 AM
So how skilled are you with wood? If I give you my wood what could you do with it? It's rather large and thick, you may have a hard time with it. Are your wood mastering skills expensive? I have a local wood expert who knows how to work with it;)


well i'm actually quite cheap ;)


you dirty, dirty man... lol

g30ffr3y
06-22-2005, 11:37 AM
well i'm actually quite cheap ;)


you dirty, dirty man... lol


a cheap man who is good with wood... where do i sign up???

tRiGgEr
06-22-2005, 11:38 AM
a cheap man who is good with wood... where do i sign up???

MAN? I thought he was a goat :crap: Never mind :mad:

psych0ticnemes1
06-22-2005, 11:39 AM
MAN? I thought he was a goat :crap: Never mind :mad:



:/ you = messed