Recent content by ExpoSport

thanks!! appreciate the kind words. soon, hopefully really soon, i'm going to have metric worked into it for people across the pond. plus a new thing or two, more so just visual things.

i was told that end correction gets taken out of gross volume as well. the sub sees that and uses that as port length, not usable airspace. but...that's just what i was told.

just a little bump is all

thanks yeah the RE calc does not take a lot of things into consideration. and also very limited in design, as you can see in the picture

thanks man glad you like it!

that is exactly right. if you look at the diagram i posted, the physical length is 10", yet the *actual* length is longer (measured down the middle). if you made that box say twice the size with the port staying the same, then the curve in the box would not technically extend the port length...

physical port length is the length of the wood. in the first one, the port does not need to bend so therefore it's the full length. in the second one, it has to bend, so it doesnt need to physically be as long as you have entered in the box. somewhat similar to this: caption should explain...

because the port needs to bend, so the 'physical' length just needs to be shorter but if you measure down the middle of the port you'll notice it's the same length

knils....that's working exactly how it's supposed to. picking a desired volume if you know how much space you want to give you speaker(s), and tuning it to that volume. it's your job to figure in the dimensions to achieve that. changing box dimensions would be virtually impossible because there...

woop woop! thanks guys hope it works well for ya

one more bump before i let it get buried

and end correction is a number that gets added into the port length in the equation of the formula when doing slot ports. it does not need to be figured in manually or physically. say that port was 10" long, it'd be physically 10" long but the sub will *think* that it was 12.5" long. but you...

technically yes you would. but for a port to be effective, there needs to be more of a physical port in the box rather than a hole in the box. but look on the output boxes on the right -- based on 12-16 sq inches of port per foot, you should have 97-129 sq inches of port, whereas you have 25...

a port should not be 0" long. if it's a slot port, 2.5" will be automatically added to port length for end correction, but 0" does not really count as a port. you need an actual port for it to be correct. if 0" gives you ANY sort of real life tuning, then it must be a low low amount of port area...

.75 is added for a slot port with 3 common walls (a port that shares 3 box walls as part of the port. if it shares 1 or 2 sides, then more wood is used for the port, ending up with more displacement. if you mean port length, then that's for end correction, which is half of the port width (or...