DCM Time Frames and Time windows sound like high end audiophile speakers that would cost over a thousand today and you can often pick them up minty for about 150 dollars. They are smooth, refined, and efficient so they could be driven to decent volume by your equipment and cast a wide sound stage. They are tall and thin.
The original large and "smaller" Advents reproduce the timbre of music very accurately and have deep tight bass, these often show for about 100, but watch out for rotted foam surrounds on the woofers, these are actually easily redone for another 28.00 or so. These are big "bookshelf" speakers.
Dynaco A-25s are supposed to be great as well, as well as JBL century 100s, and Polk B-10s but I have never heard these speakers.