Is a mini T-line effective?

[kneadle]

I like the visual design advantages of Transmission Line speakers, round and/or slender and whatnot. However, I know that TLs are generally a design for smooth, extended bass response, which I currently enjoy.

Nevertheless, I'm designing some speakers for my wife's living room, and they have to be small and attractive. I ran the TANG BAND W3-879S 3" SHIELDED DRIVER through MJKs mathcad for a closed-end TL (no taper in the initial modelling). The results are wacky, with nearly 45° of F's beginning at 5K, meaning, TL with 3" is no-go.

Am I seeing this correctly?

Thanks,

Dave

[Timn8ter]

If you want to use a 3" driver go with the W3-871S. Much better highs. A TL for the 871 is;

L=16
So = 18.5 sq in
SL = 18.5 Sqin
Zdriver = 8
Rport = .5"
Lport = 1"
Zport = 15"
Stuffing ~.3

I have a design for a floor standing FE103E bipole TL if you're interested. It's about 32" high so that might be more than you're looking for.

[Rudolf]

Hi Dave,
I did a mini-TML for the Fostex FF85K (with some help by GM). Measurements showed it to be pretty near the MJK simulations for an untapered ML-TQWT. F3 is somewhere ~ 80 Hz. For size look at picture (dims in cm).

[Taco]

In this months issue of HobbyHifi, they have also a TL for a Tangband unit. http://www.lautsprechershop.de/hifi/lancetta.htm

They also made the Picolino with a small Vifa unit.
http://www.lautsprechershop.de/hifi/picolino.htm

[kneadle]

Originally posted by Rudolf
Hi Dave,
I did a mini-TML for the Fostex FF85K (with some help by GM). Measurements showed it to be pretty near the MJK simulations for an untapered ML-TQWT. F3 is somewhere ~ 80 Hz. For size look at picture (dims in cm).

Willikers. No sub necessary for casual listening, eh?

Dave

[Timn8ter]

They also made the Picolino with a small Vifa unit.

Funny, it looks just like this one that Al Wooley built for our DIY Meet in April 2004.

[kneadle]

Originally posted by Taco
In this months issue of HobbyHifi, they have also a TL for a Tangband unit. http://www.lautsprechershop.de/hifi/lancetta.htm

This one is similar to one I was imagining as I fell asleep last evening.

Dave

[kneadle]

Originally posted by Timn8ter


I have a design for a floor standing FE103E bipole TL if you're interested. It's about 32" high so that might be more than you're looking for.

Thanks for the advice. I am interested in looking at the design. For the wife, it all depends on the "invisibility" of the things, not necessarily the size.

She wants to have music, but would like to tuck the speakers away on the floor behind couches and in corners. I have objected to that, and I think that something elegant will be a nice compromise.

Dave

[Rudolf]

Originally posted by kneadle
Willikers. No sub necessary for casual listening, eh?

Dave,
since most women don´t seem to look for much bass (or SPL) in their music it might be ok with no sub. Having the speaker near/at wall/corner certainly will help too.

BTW: What does "Willikers" mean? Couldn´t find it in the dic.

[Timn8ter]

Originally posted by kneadle


Thanks for the advice. I am interested in looking at the design. For the wife, it all depends on the "invisibility" of the things, not necessarily the size.

She wants to have music, but would like to tuck the speakers away on the floor behind couches and in corners. I have objected to that, and I think that something elegant will be a nice compromise.

Dave