The old traynor columns, the Vocal Masters, the Kustom Tuck and Rolls..man those were some dopey things to haul around. The acoustical center of the box was at about the center of the cabinet and it only had a horizontal dispersion of around 35-40 degrees with a horizontal of about 110-120 degrees. As you would think, the bandwidth capability was very limited in them, maybe effective from 200-8,000K. So for vocal or speech reproduction they were fine, but you had to get the center of the columns at about 6-7 feet off the ground to get your vocals to the back of the room in the direct field. So for the little piano trio or acoustic guitar group playing small rooms, they'd actually still work OK. When Peavey put in piezos and I want to say Altec came out with a set that actually had a CD horn in a model or two, they actually had some more clarity. But I'd try putting them with a slightly more modern PA head.