MK's TQWT additional bracing?

greenie512 · 18th August 2007, 11:26 PM

Well, I had planned to build MK’s TQWT later this year but … as we are having a Brisbane Builders Met at my place on the 2 Sept and I have a few fee days available that week though I might build them for the met (hey, that’s risky building to a deadline!.

These are only trial boxes so I’m building out of “seconds” 17mm ply which no doubt has voids. So though I’d add bracing for more rigidity – see drawing (dims in inches) below. No science to this but assume tapered front/backs wouldn’t need much so put most on side-side. Any comments??

I couldn’t spot the positioning of the port on Martins drawing so have placed it 4” off the base

Cheers - Phil

PS - typical just spotted dim error - top measurement in 2.5" not 1"

greenie512 · 19th August 2007, 06:44 AM

Should have modified sketch earlier but Doug [Brisso57] came to help me veneer the Small Thors - lookin good.

Just in case someone takes my sketch seriously (ha) this is now correct
top should be 2.5" as per MK, which effected some of my interior dims.

planet10 · 19th August 2007, 06:35 PM

Looks like totoally adequate over-kill

Just make sure the side-to-side braces are off-centre

dave

Scottmoose · 19th August 2007, 07:47 PM

Looks good. The more bracing the better IMO.

greenie512 · 19th August 2007, 10:29 PM

Dave – I assumed that as MK hadn’t included any bracing. As this is only a hobby and time isn’t an issue and the bracing is cheap – overkill is good.

Scott is my placement of the port correct – 4” off the base??

Cheers - Phil

planet10 · 19th August 2007, 11:07 PM

BTW this link gives some alternate ways to shape an ML-V (Milevea adds another way of folding one too)

http://www.t-linespeakers.org/FALL/bipolar/index.html

dave

greenie512 · 20th August 2007, 01:48 AM

Thanks for the link Dave, had looked at them ages ago and forgotten them. I actually like Martins lob sided design.

I’ve thought about bi-polars a couple of times but I like as much open space in my living room as possible so my speakers are always close(ish) to the wall. I’m assuming with bi-polars you’d need a good about of space between the speakers and the rear wall. That why I also like forward firing ports.

Cheers - Phil

19th August 2007, 06:35 PM	#3
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	Looks like totoally adequate over-kill Just make sure the side-to-side braces are off-centre dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

19th August 2007, 11:07 PM	#6
planet10 frugal-phile(tm) diyAudio Moderator Join Date: Oct 2001 Location: Victoria, BC, NA, Sol III Blog Entries: 4	BTW this link gives some alternate ways to shape an ML-V (Milevea adds another way of folding one too) http://www.t-linespeakers.org/FALL/bipolar/index.html dave __________________ community sites t-linespeakers.org, frugal-horn.com ........ commercial site planet10-HiFi p10-hifi forum here at diyA

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19th August 2007, 07:47 PM	#4
Scottmoose diyAudio Member Join Date: Mar 2005 Location: UK	Looks good. The more bracing the better IMO.

19th August 2007, 10:29 PM	#5
greenie512 diyAudio Member Join Date: Sep 2004 Location: Brisbane, Australia	Dave – I assumed that as MK hadn’t included any bracing. As this is only a hobby and time isn’t an issue and the bracing is cheap – overkill is good. Scott is my placement of the port correct – 4” off the base?? Cheers - Phil

20th August 2007, 01:48 AM	#7
greenie512 diyAudio Member Join Date: Sep 2004 Location: Brisbane, Australia	Thanks for the link Dave, had looked at them ages ago and forgotten them. I actually like Martins lob sided design. I’ve thought about bi-polars a couple of times but I like as much open space in my living room as possible so my speakers are always close(ish) to the wall. I’m assuming with bi-polars you’d need a good about of space between the speakers and the rear wall. That why I also like forward firing ports. Cheers - Phil

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