Transmission line speakers!

I think PWK’s folded horn was an extension of the principal.

I think it is the opposite, the transmission line is using a quasi folded horn principal with a port. Whereas a true folded horn will exit the air in the woofer chamber out the mouth of the horn (no port). I could be wrong...

Mike

...I used to have a pair of those WTLC's...long ago, far away...

Ask me about the time we hooked up four Infinity Column IIs, and connected to a Phase Linear 700, in Pacific Stereo's big room. Even with the doors closed and way in the back of the store. They asked us to turn it down because they couldn't hear customers at the front of the store. I bought a quad for myself.   

@roxy54

bkeske,

I’m not sure of how a transmission line port differs from any other port, but that is only part of what a transmission line is

And logically, it would be hard to have a transmission line port without a transmission line behind it.

I grant you, I’ve never seen a good clear cut-thru image of the ‘transmission line’ to show what your rightly question, but Richard does use that verbiage when describing the bass design of the 1’s. And that lower cabinet does exist below the 8” driver. Is Richard misusing the term? Possible, but he is a pretty smart guy, so there must be a reason he has and is still using the term. Perhaps you could contact Richard directly, I’m sure he would respond.

Or, perhaps @tomic601 could clarify as he has had wide ranging discussions with Richard over the years, and this may have been one.

My DCM Time Windows were TL

uncleang

Those are beautiful speakers... impressive

Thank you.  I think they're fantastic speakers.   They do require quite a bit of power, so they wouldn't work well with small tube / class A amps, but they sound great and are easy to work within a room.  Another advantage of transmission line vs ported is that room placement is less critical, and mine are working in a functional living room (a less than perfect space) vs a listening room.