TL-box for BG20 Visaton - Page 4

Scottmoose · 07:10 PM

Quote:

Originally Posted by Gost22

See Figure 1 and web sajt TQWPmetric.xls/
TQWT-Rechner zu meinem Projekt (Alpair 10 Gen1), Projekte der Nutzer / Eigenentwicklungen - HIFI-FORUM
cheers!

What about it? I don't understand why you have provided a link to a German forum and told us to look at it?

GM · 19th January 2013, 07:14 PM

Quote:

Originally Posted by Scottmoose

No worries Greg. Sorry I haven't been in touch myself for a couple of weeks.

Weird you've had no thread updates. Might be a server glitch somewhere.

No problemo, life is pretty hectic for most folks these days. Mine is worse than ever! At least when I had a career I could afford to pay others to do what all is eating up my quality retirement time/$$$.

Just got one from this thread. Based on what I've learned yesterday, it was a yahoo mail 'thing' and possibly hacked account, so had to re-do it a bit by deleting some website's ability to email me along with a new PW.

I'm pretty sure yahoo and/or 'customer no service' AT&T in general has been responsible for my long time spotty thread emails from some forums, but not others, so the problem may not go away completely.

GM

GM · 19th January 2013, 07:23 PM

Quote:

Originally Posted by Scottmoose

Now that's a good idea. Perhaps we can come up with something. There's got to be some kind of easy way of doing it & it would certainly save a whole lot of time. Talk about it in my next email?

I had accumulated several drawing programs plus the one MJK uses in MathCad and each one proved to be too time consuming to learn for how little I would use it, so mentioned it to Dave many moons ago, but I gathered he stayed busier than a one arm paper hanger, so didn't pursue it.

By now, seems like he would have done all, or near all, the variations, so it would be just a matter of copy/pasting them into one doc and changing all the dims to letters; ditto a 'notes' sheet. Or am I being too ignorant/naive?

GM

Scottmoose · 08:40 PM

Sounds favourite to me at least. Yeah, I know what you mean. I've got half a dozen CAD programmes here, & never had time to learn how to use them. You'd think there would be a market for something simpler for when you don't need to come up with a scale schematic for a 426 Max Wedge or similar, or spend a week ploughing through a 600 page manual, but I guess that'd be too obvious / simple to occur to the big software players.

Gost22 · 09:15 AM

Hi all!
Hi, xrk971! Hi, Scottmoose! etc,...
I very Heppy- The End with "Heppy End"!!

, see TQWT-cabinet for speaker Visaton BG-20!!!!

Cheers!

xrk971 · 20th January 2013, 10:21 AM

I'll believe it is the 'end' when I see it built

Scottmoose · 12:32 PM

Likewise.

I almost don't like to tell him that, going by the driver specs. on the Visaton site at any rate, this is a lame box design. I stuck it through Martin's worksheets to confirm; LF output is heavily damped; not necessarily a bad thing, but one wonders exactly why they used an ML conical horn in this case when a simple untapered stuffed TL like the one I did above (I forgot about that one too) would give almost exactly the same results with a much simpler box. Oh well.

xrk971 · 20th January 2013, 07:58 PM

Scottmoose,
Yes, it is remarkable how well a straight (or folded) but stuffed mass loaded TL box can work. They tend to sound very balanced and are as easy as a BR to build. You actually took the time to sim that ML horn in MJK? If you are free I have some designs that could use the old MJk turn the crank...

Gost22 · 21st January 2013, 05:47 AM

Quote:

Originally Posted by Scottmoose

Likewise.

I almost don't like to tell him that, going by the driver specs. on the Visaton site at any rate, this is a lame box design. I stuck it through Martin's worksheets to confirm; LF output is heavily damped; not necessarily a bad thing, but one wonders exactly why they used an ML conical horn in this case when a simple untapered stuffed TL like the one I did above (I forgot about that one too) would give almost exactly the same results with a much simpler box. Oh well.

Hi Scottmoose!
I agree with you ... give this show a simple box with BG-20 Visaton.
thank you!

Scottmoose · 21st January 2013, 09:01 AM

I have given you two different box designs with all of the dimensions necessary to build them.

GM has given you a box design with all of the dimensions necessary to build it.

19th January 2013, 08:35 PM	#34
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Sounds favourite to me at least. Yeah, I know what you mean. I've got half a dozen CAD programmes here, & never had time to learn how to use them. You'd think there would be a market for something simpler for when you don't need to come up with a scale schematic for a 426 Max Wedge or similar, or spend a week ploughing through a 600 page manual, but I guess that'd be too obvious / simple to occur to the big software players. Last edited by Scottmoose; 19th January 2013 at 08:40 PM.

20th January 2013, 12:29 PM	#37
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Likewise. I almost don't like to tell him that, going by the driver specs. on the Visaton site at any rate, this is a lame box design. I stuck it through Martin's worksheets to confirm; LF output is heavily damped; not necessarily a bad thing, but one wonders exactly why they used an ML conical horn in this case when a simple untapered stuffed TL like the one I did above (I forgot about that one too) would give almost exactly the same results with a much simpler box. Oh well. Last edited by Scottmoose; 20th January 2013 at 12:32 PM.

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20th January 2013, 10:21 AM	#36
xrk971 diyAudio Member Join Date: Oct 2012 Location: Virginia	I'll believe it is the 'end' when I see it built

20th January 2013, 07:58 PM	#38
xrk971 diyAudio Member Join Date: Oct 2012 Location: Virginia	Scottmoose, Yes, it is remarkable how well a straight (or folded) but stuffed mass loaded TL box can work. They tend to sound very balanced and are as easy as a BR to build. You actually took the time to sim that ML horn in MJK? If you are free I have some designs that could use the old MJk turn the crank...

21st January 2013, 09:01 AM	#40
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	I have given you two different box designs with all of the dimensions necessary to build them. GM has given you a box design with all of the dimensions necessary to build it.