malandrin4o8 10+ year member
Member
Does a the port have to be L shaped or can it just be straight l. For example port needs to be 17" long and sub box depth is 24.
Not that it pertains to this too much, but high-peak narrow-bandwidth burp boxes have ridiculously short ports. DD Belgium's looks to be about 3", lol:
dB-drag SS NW project 2012 from "Team DD Belgium" - SPL & Streetbass - Talk Audio
Can you explain that more? I'm very interested, actuallyA slot port along a wall like that actually gains half the port width in effective depth.
There is a % of the port width that still acts as port length. I forget the % exactly but if a port is say 5" wide, up to say 5.5" width can still be considered port length.Can you explain that more? I'm very interested, actually
Cool, thanks!There is a % of the port width that still acts as port length. I forget the % exactly but if a port is say 5" wide, up to say 5.5" width can still be considered port length.
Same with flared aeros or kerfed ports.
Looking straight on at that "box" you posted, the right hand wall is part of the "port". While the baffle side is short, the long side still holds a column of air against it. SO to figure out the effective port length, you take the depth of the shorter side and add half a port width.Can you explain that more? I'm very interested, actually
Thanks, that was a great explanation! Good to knowLooking straight on at that "box" you posted, the right hand wall is part of the "port". While the baffle side is short, the long side still holds a column of air against it. SO to figure out the effective port length, you take the depth of the shorter side and add half a port width.
Or in other words. Sketch up a top view of that box, then draw a line at a 45 degree angle from the back of the baffle (right at the edge of the port) extending to the right hand wall of the port... that is the port volume/length that the speaker/box "sees".
Or in other other words. If that "port" was in the center of the box, it would need to extend about a foot deep into the box to load the same as it is now due to the driver's side wall. I tried to sketch it up in gimp but it's saving in some oddball file format. LMK if you don't follow I'll boot up windows and use Paint.