Fab has done a neat BIB spreadsheet that incorporates elements of the previous two sheets together -hope you don't mind my suggesting to him that he adopts the taper ratio formula you advised for the Suggested Dimensions section Greg. Both Metric and Imperial are available.
Greets!
OK, I give up, all I get is programming 'gobbledegoop' when I open it with Excel 2k.
GM
OK, I give up, all I get is programming 'gobbledegoop' when I open it with Excel 2k.
GM
Blast! Mine's Excel XP -that might be the cause of it. Was originally an Open Office file resaved as Excel, as I don't have OO installed at the moment.
Re-saved as Excel 97-2000 file. According to, er, Excel anyway. Hope this works...
Re-saved as Excel 97-2000 file. According to, er, Excel anyway. Hope this works...
Original works in Excel 2004 -- some visual indicators of what are input variables & what are generated values are indicated thou.
dave
dave
Hi guys!
Thanks for looking at my spreadsheet_mod.
Sorry if it seems not working in some PC configuration. I've saved more different formats now from the original OpenOffice .ods.
Unfortunately I can't convert it in .xlt
For OpenOffice
Thanks for looking at my spreadsheet_mod.
Sorry if it seems not working in some PC configuration. I've saved more different formats now from the original OpenOffice .ods.
Unfortunately I can't convert it in .xlt
For OpenOffice
A brief question:
I'm drawing on paper my BIB and as I can't find around here some Birch plywood bigger than 60"x60" and the speakers will be +/- 65" tall, I'll be using a sandwich of two different woods : okumé plywood and pear or exotic blockboard wood.
I'd like to have one "D" side not glued (instead of the bottom base) for easy tweaking or damping material filling... Anyone has experienced this? Any contraindications?
Cheers.
Ciao.Fab.
I'm drawing on paper my BIB and as I can't find around here some Birch plywood bigger than 60"x60" and the speakers will be +/- 65" tall, I'll be using a sandwich of two different woods : okumé plywood and pear or exotic blockboard wood.
I'd like to have one "D" side not glued (instead of the bottom base) for easy tweaking or damping material filling... Anyone has experienced this? Any contraindications?
Cheers.
Ciao.Fab.
Greets!
Winzip says all of them appear to be invalid archives, so I went to another proven zipped DL and it worked fine.
GM
Winzip says all of them appear to be invalid archives, so I went to another proven zipped DL and it worked fine.
GM
Hi
yes, these last zips don't open.
best, LC
here's my 5¢, saved as excel 5 and zipped on a Mac...
yes, these last zips don't open.
best, LC
here's my 5¢, saved as excel 5 and zipped on a Mac...
Acc!!!!
All those .ZIP files were .RAR, created win winrar, than renamed in .zip for attachment reasons....
Sorry for the incongruity.
Fab.
P.s.
Hi Lovechild, I hope you don't mind if I've included your beautiufl BIB picture in my spreadsheet for a much better visual reference.
Fab.
All those .ZIP files were .RAR, created win winrar, than renamed in .zip for attachment reasons....
Sorry for the incongruity.
Fab.
P.s.
Hi Lovechild, I hope you don't mind if I've included your beautiufl BIB picture in my spreadsheet for a much better visual reference.
Fab.
McFaBs said:
Greets!
The major drawback is that it's hard to get a good temporary seal, so the finished product may not perform the same as your tediously found optimum.
GM
Greets!
I never had much luck with the typical foam insulating/sealing tapes found at hardware stores, etc., so used what's referred to here as Nema 4 (hazardous location) industrial neoprene door gasketing sold here at industrial electrical supply distributors for mounting large drivers, baffle boards, rear access panels, etc.. I'm sure you'll have an equivalent locally. Not cheap here and I doubt it in Italy either, but it seals really well and is rated for thousands of door closings in very toxic fumes/dusty environments, so no worries about 'crushing', rotting, etc., over the decades in a typical HIFI app. Indeed, the baffle gasketing on my old subs that I built in '69 is still relatively soft/pliable and seals well after removing/installing them twice/yr to rotate the drivers. The main thing is to not squeeze it too flat.
That said, there's been considerable materials advancements since I tried the various 'consumer' foams, so maybe you can get by using cheaper closed cell foam gasketing now, so as always YMMV.
GM
I never had much luck with the typical foam insulating/sealing tapes found at hardware stores, etc., so used what's referred to here as Nema 4 (hazardous location) industrial neoprene door gasketing sold here at industrial electrical supply distributors for mounting large drivers, baffle boards, rear access panels, etc.. I'm sure you'll have an equivalent locally. Not cheap here and I doubt it in Italy either, but it seals really well and is rated for thousands of door closings in very toxic fumes/dusty environments, so no worries about 'crushing', rotting, etc., over the decades in a typical HIFI app. Indeed, the baffle gasketing on my old subs that I built in '69 is still relatively soft/pliable and seals well after removing/installing them twice/yr to rotate the drivers. The main thing is to not squeeze it too flat.
That said, there's been considerable materials advancements since I tried the various 'consumer' foams, so maybe you can get by using cheaper closed cell foam gasketing now, so as always YMMV.
GM
Thanks GM
I'll see if Google has something to say about, here in Italy.
Talking about stuffing materials, Lou Chochos of Omega Speakers on a Stereophile article was mentioning as using :"high-grade carpet padding - saying - ...it sounds better than everything else I tried...." (Stereophile vol27 n.11 Nov 2004)
I can't figure what kind of carpet is! Can you explain me or suggest a link where exactly I can see it? You know, sometimes It's not possible to find same materials outside USA, or not easy to translate and find the equivalent.....Italy is a strange land.....
Ciao.Fab.
P.s. Just a stupid question.... what YMMV stands for?....
I'll see if Google has something to say about, here in Italy.
Talking about stuffing materials, Lou Chochos of Omega Speakers on a Stereophile article was mentioning as using :"high-grade carpet padding - saying - ...it sounds better than everything else I tried...." (Stereophile vol27 n.11 Nov 2004)
I can't figure what kind of carpet is! Can you explain me or suggest a link where exactly I can see it? You know, sometimes It's not possible to find same materials outside USA, or not easy to translate and find the equivalent.....Italy is a strange land.....
Ciao.Fab.
P.s. Just a stupid question.... what YMMV stands for?....
Your Mileage May Vary.
Not half as strange as the UK, my friend.
It's (probably) carpet backing / underlay. Exactly which of the several types Louis is refering to I wouldn't like to say though. He's a decent bloke though, so you could always fire him an emial to ask.
Not half as strange as the UK, my friend.
It's (probably) carpet backing / underlay. Exactly which of the several types Louis is refering to I wouldn't like to say though. He's a decent bloke though, so you could always fire him an emial to ask.
Hi Scott!
You know, I thought "high-grade carpet padding" was a well known specific carpet....
In Italy, market class for carpets is "carpet" or "moquette"......made of natural cotton, or wool, or synthetic etc....simple isn't it?
So a basic translation of some technical material terms doesn't help so much.
Thanks anyway, and now I know what is YMMV!!!!
Good. Ciao.Fab.
You know, I thought "high-grade carpet padding" was a well known specific carpet....
In Italy, market class for carpets is "carpet" or "moquette"......made of natural cotton, or wool, or synthetic etc....simple isn't it?
So a basic translation of some technical material terms doesn't help so much.
Thanks anyway, and now I know what is YMMV!!!!
Good. Ciao.Fab.
Maybe I can help. The padding Louis seems to be referring is the stuff made up of recycled foam-of-many-colors. That medium density foam, made of dime-sized recycled bits, reformed into carpet foam padding, stuff. Recycled foam likely of various densities, and possibly this is the advantage he is referring to, possibly this non-homogenous nature of the foam's density.
It is inside a pair of Omega SuperHemps I have, and works well. Cannot hear the box resonate At All. Try it. Works for Louis.
It is inside a pair of Omega SuperHemps I have, and works well. Cannot hear the box resonate At All. Try it. Works for Louis.