Transmission line speakers!

Many Infinity designs of the 70s were transmission line.

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I'm not familiar with any transmission line speaker Infinity made. Hybrid line source all except the Beta Vs I think. They were a true, line source speakers. The QLS1 was a hybrid too. Maybe you got the nomenclature mixed up.. or I missed something back then. Still have a few Infinities. RS2bs, RS4B, 2 sets of the original Infinitesimals. I've sure worked and owned a lot of them through the years..

Transmission Line Speakers are pretty cool actually. Folded box designs are too.

Fibonacci speakers. :-)

Regards

I’ve had custom transmission lines for 32 years. Even if I ever try another pair of speakers at some point, they’ll most likely use a TL. They’re more difficult to build and to get right than many speakers, but when done well, the lack of resonance can be spectacular from the low bass all the up into the midrange....the midrange can be one of the strongest benefits of a TL (lots of variables, obviously).  Add good higher frequency drivers and a well executed crossover, and you have the makings for impressive fidelity that most speakers struggle to match.

ditusa- Yes and the L65 has the 6 in front of the 5 instead of behind it like in the L25. Good catch. Anyway thanks, I was wrong about Jubal don't know where that came from they were L25 Prima. The L26 was the wood cabinet version of the L25. Same speaker, different cabinets. Both had 10" woofers. The L25 is the ugly one you buy when your paper route earnings aren't enough to afford the nice wood one. Thanks for reminding me how much I was willing to sacrifice if it would get me a good stereo. 

People think Tekton are ugly. They have no idea. Bright yellow and orange, ugliest speaker ever.

http://www.lansingheritage.org/html/jbl/specs/home-speakers/1972-l25.htm

I'm not familiar with any transmission line speaker Infinity made.

Infinity Column and Column II, QLS-1, Quantum-2, 1001A, to name a few.

I owned TDL large monitors, bought the same model twice, and loved them. Great subterranean bass.