Old Fart at Play wrote:

The only place I found in the UK that makes tubes like
Sonotube(tm) is Essex Tube Windings in Tilbury.
http://www.essextubes.com
The don't seem to have any distributors but will make
any size you want. They take credit cards and will deliver,
presumably in a protective cardboard tube.

Cheers - I'll have a shoofty.


A 12" woofer at one end of a 10' pipe behind the settee would
make an interesting TL sub.

eyes gap behind sofa...


--
Wally
www.art-gallery.myby.co.uk
Moving soon to: www.artbywally.com

"Wally" wrote:

: eyes gap behind sofa...

Owning two B139's myself, I've always liked this idea.
It's have to wait until I move, I think - I doubt that I'd get it down the
stairs of my second-floor apartment - but see what you think!

http://www.hogheaven.com/diyaudio/su...PATL/patl.html

"Wally" wrote:

: eyes gap behind sofa...

Owning two B139's myself, I've always liked this idea.
It's have to wait until I move, I think - I doubt that I'd get it down the
stairs of my second-floor apartment - but see what you think!

http://www.hogheaven.com/diyaudio/su...PATL/patl.html

"Wally" wrote:

: Don Pearce wrote:
:
: There was a design recommended by Wharfedale back in the sixties that
: used a concrete drain pipe for exactly the purpose you describe. I'm
: sure that with a little searching round the bigger plumbers you could
: find something suitable.
:
: I remember something like that (with the driver mounted in the side rather
: than on the end). I'll be having a wander round the local DIY to check out
: their audiophile-quality garden ornaments...

These look suitably horrible ...
http://www.cornu.de/en/tml.html

I'm sure I've seen similiar constructions elsewhere too.
I do suspect that just bunging anything other than a limited bandwidth sub
into a drainpipe is going to lead to all sorts of complex resonances.

Heavy math references:
http://www.quarter-wave.com/

"Wally" wrote:

: Don Pearce wrote:
:
: There was a design recommended by Wharfedale back in the sixties that
: used a concrete drain pipe for exactly the purpose you describe. I'm
: sure that with a little searching round the bigger plumbers you could
: find something suitable.
:
: I remember something like that (with the driver mounted in the side rather
: than on the end). I'll be having a wander round the local DIY to check out
: their audiophile-quality garden ornaments...

These look suitably horrible ...
http://www.cornu.de/en/tml.html

I'm sure I've seen similiar constructions elsewhere too.
I do suspect that just bunging anything other than a limited bandwidth sub
into a drainpipe is going to lead to all sorts of complex resonances.

Heavy math references:
http://www.quarter-wave.com/

: http://www.hogheaven.com/diyaudio/su...PATL/patl.html

I forgot to add this. The main site should be useful too.

http://www.t-linespeakers.org/classi...fin/index.html

: http://www.hogheaven.com/diyaudio/su...PATL/patl.html

I forgot to add this. The main site should be useful too.

http://www.t-linespeakers.org/classi...fin/index.html

Ross Matheson wrote:

These look suitably horrible ...
http://www.cornu.de/en/tml.html

They certainly do.


I'm sure I've seen similiar constructions elsewhere too.
I do suspect that just bunging anything other than a limited
bandwidth sub into a drainpipe is going to lead to all sorts of
complex resonances.

Not for a sub, but upper bass to mid.


Heavy math references:
http://www.quarter-wave.com/

Cheers. I'll fire up my spreadsheet in anticipation. :-)


--
Wally
www.art-gallery.myby.co.uk
Moving soon to: www.artbywally.com

Ross Matheson wrote:

These look suitably horrible ...
http://www.cornu.de/en/tml.html

They certainly do.


I'm sure I've seen similiar constructions elsewhere too.
I do suspect that just bunging anything other than a limited
bandwidth sub into a drainpipe is going to lead to all sorts of
complex resonances.

Not for a sub, but upper bass to mid.


Heavy math references:
http://www.quarter-wave.com/

Cheers. I'll fire up my spreadsheet in anticipation. :-)


--
Wally
www.art-gallery.myby.co.uk
Moving soon to: www.artbywally.com

Ross Matheson wrote:

eyes gap behind sofa...

Owning two B139's myself, I've always liked this idea.
It's have to wait until I move, I think - I doubt that I'd get it
down the stairs of my second-floor apartment - but see what you think!

http://www.hogheaven.com/diyaudio/su...PATL/patl.html

Yup, I've looked at that and gave it some consideration. I also thought of
applying the principle in an 'installation enclosure' where the TLs were
separate and running up the walls, either side of a door (concrete walls).
Dropped the idea when I rearranged the room and counted the B139s (4 = two
isobarics). There's always the loft space...


--
Wally
www.art-gallery.myby.co.uk
Moving soon to: www.artbywally.com