Polk 7, DCM Time Window, RTR Series 3, Larg Advent

The Polk dates from the late 70s/early 80s, at a time when Polk was trying to position itself as the American Spendor. With that 8" passive radiator, it was about the smoothest bass you could buy for under $200 a side at the time.

I am familiar with the Polk and the Time Window. The Polk was a fairly well reviewed traditional box speaker. Typical Polk sound... full, warm.

The DCM Time WIndow was pretty popular in its day... a cylinder shaped floor stander that I briefly consider in the seventies (ended up getting Vandersteen 2). Really well-reviewed, imaged pretty well, looked beautiful. Competed generally with Vandies, Maggies, Merlins, and Dahlquists. I believe the Time WIndows went for around $800-1000 back then. I seem to recall they had two models, one called the 3a perhaps that was larger and more expensive?

DCM also made a second series of speakers called Time Frames. Don't know why... the Time Windows sounded better IMO. Seemed DCM later ran out of steam and went to traditional box speakers.