Hey Robin, good ideas for the bass. I may just do the spikes if I do some refinishing on the old boys. The vinyl is peeling off some the corners so I may do a carpet or pleather covering for them and use pro speaker metal or plastic corner reinforcements to hide any sins at the edges.
The old boys are still fun to listen to. My wife and I had a great day of listening using my cd player's variable output feeding my classdaudio amp going to the Sansuis using appropriately crappy zip cord. I think ScottF has it right; when you hear those old speakers the flaws are so obvious that your audiophile mind turns off and your "crocodile" brain takes over. Just listen and enjoy the music, not the sound. Lisa and I went through Deep Purple, Ravel Piano Concerto, hell, I even played Seals and Croft on them. Then I hooked them up as the bass bins of the Blackmores.

Today I will bring in another big boy to try out as the bass bins of the Blackmores. The X8000 were pretty good and today's speaker should be a whole lot better. Let you know more later.