I kinda forgot about this thread, but here is some more info. The tall pairs are RSL Elan’s, The outside pair are walnut veneer, and the inside pair are solid oak. Very well made and solid with minimal cabinet resonance and very good wife appeal. I have these running off a pair of bridged Soundcraftsmen PCR 800's at 600 WPC. While the imaging is not what it should be with the quad pair, the low level bass is equal to a live performance and when I push the amps, I can see the windows and the TV screen in my listening room flex. Few individual speakers can handle that much power, the pairs are nice that way.
As a “pair of pairs”, the whole system sounds fantastic for concert DVD’s. The Cream reunion concert, Robin Ford Live and Pat Methany are favorites with this setup because of their very clean audio, not often found on concert DVD’s. For more accurate reproduction, I just run the outer pair, using the inners for whatever vintage unit I’m testing. So far the wife is being a good sport about the pair of “Twin Towers” that dominate the living room.
The RSL Elan’s where often demo’d and compared against the JBL L-100 T’s. I have a set of JBL 4311’s and I’m more impressed with the RSL Elan’s extended bottom end. These spec out with a 12" rear firing P/R, 12" woofer with 6.5 lb magnet and 2 or 3" VC, 5" closed back mid, and front and rear firing high output 1" soft dome tweeters. High quality L pads for every speaker but the woofer, Monster cable internally wired, high quality X overs, and a claimed response of 25 Hz to 25kHz with a spl of 98 db and a max power rating of 300 watts. They are also fuse protected and came with 5 year warranty! I think the pair was around $1000 in 1988 and weigh in at 65 lbs each.
I have had open dialog with the creator of these speakers, Howard Rodgers, and he told me they had a difficult time finding tweeters that could balance the bass driver output and ended up having them made custom in Europe. I would agree even delicate passages at low volume sound amazingly realistic. I have many other RSL’s and can highly recommend the pre-takeover speakers. After the sale of the business, the quality went downhill pretty fast along with the entire company!