Terry Cain's BIB -why does it work and does anyone have those Fostex Craft Handbooks? - Page 412 - diyAudio
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Old 16th June 2008, 01:18 PM   #4111
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loninappleton,
The updated sheet has been sent. I can email you a copy if you would like. All of the measurments came directly from this forum, mostly from GM. The only contribution on my end was creating the sheet for others to use. The only addition was the auto-rounding for easier wood cutting.
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Old 16th June 2008, 06:59 PM   #4112
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Ok, well, I just have one remaining cut to do but that is for the
overall length of the front baffle anyway.

It will be interesting to know if I can hear the difference between the double baffle newer build and the older one. Plus there is a distinct different in slant length from old (longer) to new (shorter.) As stated,
the slant difference may have been an error on the first one.
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Old 16th June 2008, 08:02 PM   #4113
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This may be a bit late, but awhile ago I bookmarked this page here. It has volume conversion, length conversion and even area conversion. The best part is that you don't have to refresh the page to enter different values like some others out there. It's very usefull.
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Old 17th June 2008, 12:10 AM   #4114
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Default Cheating

Since the peak is stuffed with, erm, stuffing, I'm wondering if I can cheat the peak therefore giving it the right measurement down to driver center.

The cheat would be to put a spacer at the peak. This would slightly change the angle of the slant-- it would put the absolute peak higher and compensate for the inch and half or so difference between my cutout (erroneously gotten from my original build) versus the one given in the calculator.

I cut the driver hole at 19.5 at driver center from top and it needs a little more.

Would this cheat work?
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Old 17th June 2008, 03:14 AM   #4115
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>>> The updated sheet has been sent.

Thanks!

http://www.zillaaudio.com/bib-calculator.htm

Please see if this new link works and lets you download and use the latest BIB calculator.

I have been having trouble with my old server. If you need to download the new calculator and the link does not work just email me and i will send it directly to you.

Godzilla3@hotmail.com

Truly,
Godzilla
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Old 17th June 2008, 04:01 AM   #4116
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Quote:
Originally posted by Godzilla
>>> The updated sheet has been sent.

Thanks!

http://www.zillaaudio.com/bib-calculator.htm

Please see if this new link works and lets you download and use the latest BIB calculator.

I have been having trouble with my old server. If you need to download the new calculator and the link does not work just email me and i will send it directly to you.

Godzilla3@hotmail.com

Truly,
Godzilla
My mail just winked out again so I'll give the message here that the
calculator's conversion program works but everything below that got knocked out-- including the critical slant measurement.

Also the previous samples that were in there of the FF165 and FE103 were helpful to see how the thing works. Those items were no longer in there.

The measurements look pretty close to what I'm working with.

For those who don't want to make wings and such that idea that Jeff had to make a wide front baffle seems a good solution for a final 'hands off' build of the BIB. Me? I'm still fiddling.
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Old 18th June 2008, 04:25 PM   #4117
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Wes updated the BIB calculator and it looks great! I will upload it later today.

Godzilla
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Old 18th June 2008, 10:10 PM   #4118
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Here is the latest BIB Calculator!

http://www.zillaaudio.com/diy-speaker-building.htm

It's the second item down on the left. I am in the process of rebuilding my website so please forgive me for the broken links and work in progress.

If anyone has any questions do not hesitate to ask.

Godzilla
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Old 18th June 2008, 11:44 PM   #4119
gychang is offline gychang  United States
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Quote:
Originally posted by Godzilla
Here is the latest BIB Calculator!

http://www.zillaaudio.com/diy-speaker-building.htm

Godzilla

your website looks good, thanks for the latest calculator, seems very complete.

gychang
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Old 20th June 2008, 06:20 PM   #4120
omegatt is offline omegatt  United Kingdom
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Default 168 E Sigma BIB

Would be greatful for a bit of advice which may be buried in the hundreds of pages.
Some BIB's are built with an extra external baffle some round, some square, some flush with the cabinet some which extend outside the confines of the box.

Is there a consensus which is best with or without ?

Square or round ?

What depth ?

Finally should the hole for the driver be cut straight or bevelled ?

Thanks
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