BIB upstairs!

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gychang

gychang

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Joined 2005
#1
wife wants another set upstairs since the el cheapo worked out so well.

see pic and details here: http://www.diyaudio.com/forums/showthread.php?s=&threadid=89831

Upstairs BIB cabinet has to be smaller, for Scottmoose, is the following inside size measurement OK for FE107E?

official recommendation:
L = (Line length) 85in
Zdriver = Driver 17" down from sealed end of cabinet
Sm = 49in^2

mine: (inside measurements)
width: 7", length: 7"
height: 50" (not sure how to figure from line length)
speaker placement: 17" from top.


thanks, should keep me busy for couple of weekends... I have some more ideas on how to further improve my cabinet. This is addicting...

gychang
 
#2
Somewhere in the thick of the big BiB thread, Scottmoose had made suggested dims for HiVi B3S drivers that were tiny.

Line length 67"
zDriver 13.5"
SM 25"^2

I'm thinking I'll knock together a pair of these once my time and budget get unfrozen (looks like after the holidays at this point). I think I would build them floor loaded given how small they are.

Kensai
 
#3
Just divide the length by 2 to get the cabinet height. It's not exact, but it's close enough. Ratio of width to depth ideally wants to be 1:1.4142, or as close as reasonably possible to it. I'd use a width of 6in x 8.5in deep (internal, not including the internal baffle). Terminate the baffle 4.25in from the internal front, rear and floor.
 
#4
Scottmoose said:
Just divide the length by 2 to get the cabinet height. It's not exact, but it's close enough. Ratio of width to depth ideally wants to be 1:1.4142, or as close as reasonably possible to it. I'd use a width of 6in x 8.5in deep (internal, not including the internal baffle). Terminate the baffle 4.25in from the internal front, rear and floor.
Click to expand...


Great, thanks.

gychang
 
#7
Scottmoose said:
Just divide the length by 2 to get the cabinet height. It's not exact, but it's close enough. Ratio of width to depth ideally wants to be 1:1.4142, or as close as reasonably possible to it. I'd use a width of 6in x 8.5in deep (internal, not including the internal baffle). Terminate the baffle 4.25in from the internal front, rear and floor.
Click to expand...

Scott, was this for me (FE107E)? or B3S speakers from another person?

gychang
 
#10
Kensai said:
As long as I can fit them into a 4' tall floor loaded BiB, I would love to. I just don't have any way of specing cabs for new drivers. You wouldn't happen to have BiB dims for any of the 3" Aurasounds, would you, Spasticteapot?

Kensai
Click to expand...


I'm afraid I'm just as much of a n00bie as you are.

If you're interested in a slightly smaller horn setup that won't break the bank, google the PAWO horns. They're about 4' tall, 1.5' wide, and about eight inches thick. I'm having a pair made.

There's a variant on the plans for a 4.5" FR driver that was custom-ordered by a guy in Oregon. They're 20$ each - quite reasonable - and although simple in construction (paper cone, rubber surround), they're supposed to perform at least as well as a FE107 and can give bass down to 60hz with ease.
 
#12
The Aurasound NS3-193-8A has an fs of 80hz according to their website or 86.5 according to Zaph. I for one would be willing to build one as I have a few of these sitting around if someone wished to give me a starting point. Zaph said that these were the only three inch drivers that he felt actually made bass.
 
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