Is anyone thinking about building Walsh drivers?

Eldartford is 100% correct. In the "A", the cone was two tiered and had two angles. The different angles reflected the propagation velocity of Titanium (upper), and Aluminum (lower). I think the "F' was the first in a series of compromises, in that all three cone materials were all at the same angle.
The theory behind the transmission line was detailed in a White Paper that Ohm would mail you for the asking back in the "70's. I have never been able to find it on the web, nor have I been able to get it from Ohm.
We did some experiments with two way "Walsh" speakers back then using off the shelf 10" CTS woofers and the foil tweeter that Infinity later bought.
It didn't sound too bad, and in fact a couple of musicians and wealthy audiophiles were impressed enough to consider backing a commercial venture.
Unfortunately, a profitable business model and art for the sake of art collided immediately and the project was doomed.
A lot of effort was put into dampening/stiffening the cone with things like roofing tar, and terminating the outer surround to coax transmission line behavior at the same time keeping a "back wave" from going back up the cone.
One big problem was that the roofing tar worked for a week or so, but then it started to really harden the the character of the sound began to degrade. After the business deal fell through, we never followed up.
We never did any serious tests, because we were a couple of broke kids playing with Hi-Fi and couldn't afford the gear to test with. They sounded good for a while, though

Hello Mapman, Unsound, Bondmanp,...everyone.

I think about building Walsh style drivers and speakers on a daily basis. I live and breathe it along side laser designs and builds.

Hope you folks don't mind if I chime in, but I have some new products that may interest you.

Why build Walsh drivers when you can now own a pair for DIY Projects? Under $1K.

Besides our highly redesigned TLS-1 (modeled after the old F),and the TLS-2, (modeled after the old A), we have now added to our line up, for DIY people the TLS-4,which is a Walsh style "Tweeter/Midrange" unit in a very compact package. There almost full range. See our virtual system..My Walsh Dream.

In addition we offer the new TLS-5 Hybrid, a fully Walsh style Tower for those with less space than the larger floorstanders require.

You know, we are often talked about here on Agon, but so far, none of you have come to see us, or test our products.

I began this sleigh ride years ago to share the music with fellow audiophiles, and to offer products for your pleasure, because you asked me too.

Our continued effort is on your behalf and we thank the dozens of clients that have blessed us with their patronage.

We would love to advertise or open a virtual store here on Agon, but unfortunately, they are priced well out of our range, for now. So, like Ohm Acoustics and others we rely on our clients to spread the word.

Eldartford,
To comment on your earlier post, Lincold Walsh did develope the first Model A's with Marty Gersten, whom went on to open and operate Ohm Acoustics. Marty eventually developed the Ohm F based on the A and the special voice coils to drive them.

While Marty left Ohm in 1978, if memory serves, I did maintain contact with him until his untimely death, just about 2 years ago. This is unfortunate, as we were collaberating on other designs utilizing this pricipal.

I am here and I am happy to help anyone whom asks.

Great listening to all

Hi Dale.

I'd much rather spend my time listening to Walsh speakers than building them.

Your speakers are on my short list of designs I have not heard that I would most like to.

Right now I am happy with what I have but always looking to explore new or future options.

I would make extra effort to go to Capital Audiofest this July if I knew you would be demoing your stuff!

I still have not heard anything that I can afford that would make me abandon Walsh style speakers for my tougher applications.

I do fear though that the expertise to make the technology work well in a marketable manner is so limited that it could fall totally by the wayside someday. That would be very sad!

Okay Dale,

I may have failed some kind of IQ test here, but I just followed my own link (above, in a previous post I made to this thread) and don't see any reference to a TLS 5 hybrid on your site. You have definitely peaked my curiosity here, but I need a little help.

Thanks,

Marty

Is anyone thinking about building Walsh drivers?

Hi Mapman,

I do agree with you, I love to listen to them too. However, as a designer and builder trying very hard to carry on the legacy of Lincoln Walsh, there is nothing quite like hearing one of our new designs roar to life and blow you away. It is a costly technology, but worth it in every way.

Wish we could go to the shows too,... but you know, spending more than $20K to attend and set up is just not cost effective for us. Rather spend that on a new design. The economy being what it is these days places a big burden on us and many others like us.

Still, you are welcome anytime.

BTW, do you remember the Ohm G? Our new TLS-4(IV) "DIY" driver and the new TLS-5(V), really go way beyond these old beauties. Drop me an email and I will send you some pics.

Hello Martykl,

No, you didn't miss any IQ test.

The TLS-4 and TLS-5 are new offerings for this year (2012) and our "IT Team" has not caught up with us yet. We are working on getting these items on our site but it does take time.

The TLS-4 is a DIY Walsh style driver that is very compact and covers the Tweeter/Midrange in a single driver. This is designed for those that want to build their own systems.

The TLS-5 is just completing the prototype phase, (with a few on order) and is a Full Range Tower System consisting of Two Walsh style drivers and a ("gag") crossover. (You guys know how much I hate crossovers, even if they are high quality.) This system has a much smaller footprint than our big floor standers. Range is 37 to 22 kHz, 3db down points.

You can see the TLS-4 on our virtual system thread under "My Walsh Dream" Ever Evolving category. For now, until our website is fully updated, you can contact me by email and ask for pics and info.