I always like the sound of the REC 3's I had heard. I am not familiar with the II models, but I would bet they are similar, with slighly less low end. The Adcom will easily drive the speakers. If the Rectilinear's need new woofer foams you can by replacement foam kits from Newfoam. It is easy to do, just take your time. By the full kit with the new dustcaps and the mylar voicecoil spacers.

Carefully try and take the grills out and inspect the drivers. If the woofer and possibly midrange have foam surrounds they usually rot and will fall apart with the slightest touch. The repair is not that diffucult, but you could ask a friend if they have ever refoamed a speaker they have had. The local hifi shop may have a sales guy there who has done it and may do the labor for you, if needed, for a small charge. Find out if you need them repaired first. Once you start to play them at low volume they may sound find, but once you start to crank it up you might hear a rasping sound as the speaker voice coil starts dragging from the foam not keeping the speaker centered on the voice coil. This is an audio hobby. Trust your ears. If they still sound find played at increased volume then all might be well with the foam.

I had my vintage Infinity speakers refoamed by Watkins (Watkins Woofer). Shipped them to him and had them back in just a few days. Check his website, watkinsstereo.com. It was fast and affordable and less headache than doing it myself. They sound fantastic!

Hi, Bill. I owned the Rectilinear III's from about 1972 'til 1976. Mine were the original shape (tallish, for those days, and about 15 or so inches wide). Later, they came out with a "Lo-boy" shape, with a wood-lattice grille and the same drivers. I didn't like them as well as mine. I have owned dozens of systems over the years, and these speakers, with Dyna tubes, stick in my memory as superbly spacious, articulate, and neutral. The highs had an electrostatic-like speed and clarity that was unusual for cones in those days. And bass was deep and tight. Since it has been so many years, I am curious about how they stack up against today's gear. I saw some on Audiogon a few months ago -- is this where you got yours? You know, I can't remember ever having the grille-covers off, since they weren't the easily removable "snap-on" types so common nowadays. Thus, I can't remember if they had foam surrounds or not. Please get back to us and report on how they sound. Ah, nostalgia.