Terry Cain's BIB -why does it work and does anyone have those Fostex Craft Handbooks? - Page 510 - diyAudio
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Old 8th January 2013, 05:56 PM   #5091
jhutka is offline jhutka  United States
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Xrk,
Here's the drawings I worked from.

I build a little different from calculator because I like to build with a side down and after the guts are in, finish with the last side on top. The plans from the calculator have the sides tucked between the baffle and the back. I like to tuck the baffle and back between the sides.
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File Type: jpg BIB for VIFA.jpg (522.0 KB, 694 views)

Last edited by jhutka; 8th January 2013 at 06:04 PM. Reason: Added more information.
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Old 8th January 2013, 11:46 PM   #5092
xrk971 is offline xrk971  United States
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Thank you Jhutka. I might try this in foam core first. qnty 5, 20x30 in sheets for both speakers. All rectangles, easy.

Last edited by xrk971; 8th January 2013 at 11:48 PM.
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Old 9th January 2013, 04:43 PM   #5093
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That's a small BIB!

I swap between the Fostex 127e and Dayton 5" fullranger (same hole size) in my smallest BIB (which is closer to four feet tall (whereas yours is less than three feet tall) and the sound produced by each driver creates a totally different and wonderful sound. Fostex smoother. Dayton bassier.
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Old 9th January 2013, 05:50 PM   #5094
xrk971 is offline xrk971  United States
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Quote:
Originally Posted by Godzilla View Post
That's a small BIB!
Maybe should be called Smaller Is Better (SIB)?
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Old 9th January 2013, 09:03 PM   #5095
jhutka is offline jhutka  United States
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I've gone even smaller. Computer BIBs made with 1/2" material and
Tang Band W2-1803S (2") as drivers. They sounded really nice for desktop use.

In my naivete', I thought that any speaker I plugged into the calculator would work.
I've only been disappointed once. Great Design!

JH

Last edited by jhutka; 9th January 2013 at 09:06 PM.
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Old 9th January 2013, 10:55 PM   #5096
xrk971 is offline xrk971  United States
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What driver did not work? I also want to make a 2 in driver bib in side by side stereo boombox config. Will visaton frs5 work? The tc9fd has little bothers: tc7fd and tc6fd that should work too.
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Old 10th January 2013, 02:44 AM   #5097
jhutka is offline jhutka  United States
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Almost embarrassed to say that it was a HiWave Harp BMR that did not work as a BIB. I was shooting for the elongated aesthetic in an elongated box. Look was ok, but sound was not.

Still have the two speakers if anyone has ideas.

As far as using the FRS5, plug the specs into the calculator and see what comes out. (GM's post number 5017)
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File Type: jpg HiWave Speaker.jpg (3.9 KB, 265 views)
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File Type: pdf HiWave Specs.pdf (212.5 KB, 15 views)

Last edited by jhutka; 10th January 2013 at 02:59 AM.
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Old 10th January 2013, 03:52 AM   #5098
GM is offline GM  United States
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Hmm, plugged the specs into WinISD Pro to see how well they matched up.....

These suggested a ~50 Hz tuning, so plugged these into the calculator except with a 97.42 Hz Fs and it came out like this, so if you want to try again it might be OK once damped.........

GM
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File Type: gif HiWave HIBM130H10-8_LP revised specs.gif (13.6 KB, 243 views)
File Type: gif HiWave HIBM130H10-8_LP T.C. BIB.gif (7.1 KB, 208 views)
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Old 10th January 2013, 06:06 PM   #5099
xrk971 is offline xrk971  United States
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Quote:
Originally Posted by GM View Post
Hmm, plugged the specs into WinISD Pro to see how well they matched up.....

These suggested a ~50 Hz tuning, so plugged these into the calculator except with a 97.42 Hz Fs and it came out like this, so if you want to try again it might be OK once damped.........

GM
GM,
Which driver are you talking about here? The FRS5? The Fs on that is like 180 Hz...
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Old 10th January 2013, 06:56 PM   #5100
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I was responding to jhutka's HiWave post.

GM
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