Transmission line speakers!

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. 

Khorn. A transmission line with a fold or two. Just my interpretation, as I am no speaker designer. PWK could have ported it, but would not get the efficiency of a true horn, nor the quality of output. Transmission loaded, ime, always had folds within the cabinets, otherwise, it was simply ported. We can agree to disagree. All good.🙂

👍

A number of years ago I had a pair of PMC's FB1I, used in a small bedroom driven by a Bryston B-100. I remember them as being well built and very good sounding speaker. 

mrdecibel,

I don't think we can agree to disagree in this case. The transmission line is the opposite; it amplifies the rear output of the bass driver, and the folded horn of the Khorn amplifies the forward output of the bass driver.