I currently have the AL connected to some Cerwin Vega series 26 speakers, not the greatest sound, but they get the job done. I will be upgrading speakers as well, but it will be after I get the system upgrade. It didn't come with the original AL speakers, but I would be interested in hearing what they sound like with the matched head unit.The speakers packaged with the 911A were OK 2-way bookshelves to help get them out the door as an all-in-one audio system, but the 887A's weren't that great of a match with the main unit. They were acoustic suspension and the bass power rolloff of the 911A produce the current required of the 887A's in the lower bass. I found that out when I hooked 'em up to a high current SAE power amp (Mk XXXIb) of the same era and got what seemed like an extra 1/2 octave of bass.
They did sound good with the Altec 874A Segovia 3-ways. These were 4-ohm acoustic suspension "large bookshelf" (14"x12"x25") which had a relaxed feel to them and good deep bass response. I also had great success connecting them to VOTT studio monitors. Generally I think the 911A matches better with a large high-sensitivity ported speaker, and with your Cerwin-Vegas you're probably on the right track. The current Cerwin-Vega CLS-215 floorstander has gotten enthusiastic reviews both from The Abso!ute Sound
and Soundstage. They are about 95dB efficient, have a Scandinavian-sourced 6-1/2" cone midrange, and two 15" woofers reaching down to about 26 Hz. Being CV's, economy of scale makes these full-range efficient speakers available for about $1K/pair.
I still think that you should take it off my hands Johnny.....Well thanks, but I already have too much old gear including an old Sherwood receiver, some EPI speakers from the early '80s, four VSP Labs TransMOS amps, the matching preamp, an Outlaw 950 pre/pro, an Amber Model 17 preamp, a Vector Research receiver, an old SAE amp, etc., etc. And that's what's in the garage. I have four active and working sound systems in the house besides. So nostalgia will have to take a back seat for me. I'm outta space!
I'll never forget the excitement when I brought that system home and unboxed it, but 38 years later I don't need a visual aid for the nostalgia. :-)