I have a friend who has three and four panel Acoustats with the servo amps.
The four panels are an even easier load for the amps, and give you more bottom end impact.
Try lifting them off the floor a bit,but standard set up is still better than most of the stuff being sold today.
I kick myself for passing these speakers up on numerous occassions, maybe someday, I have friends with several of the speakers and spare amps in disarray.
If Ed is who I think he is of Foundation Research ,rest assured he is a master at improving the already great Strickland circuit.
My friend had his done by Ed Wolkow of Foundation Research, and never had any problems.
His line of power cord/conditioners- LC10, 1000, and the old LC 2 still amaze me.