Salectric. Your post demonstrates what a small world it is. Like Tbg I have listened to the Zilplex and Synergistic Research Acoustic Arts system. I do not think Tbg auditioned the "full" Arts System. However he is using a full Ziplex system, and I am using and quite happy with a full Synergistic Acoustic Arts system.
My common bond with you is our use of horns, tube amps, Dulands and Northcreeks. I would suggest trying the new Synergistic Research HFT- FEQ system. A tremendous improvement in allowing the sound from the speakers to interact with the room acoustics. They have a 30 day trial, are easy to set up using the You Tube tutorial, and no damage to walls. The Zilplex and Acoustic Art systems are labor intensive to optimize the room sound. However the time is worth it.
My common bond with you is our use of horns, tube amps, Dulands and Northcreeks. I would suggest trying the new Synergistic Research HFT- FEQ system. A tremendous improvement in allowing the sound from the speakers to interact with the room acoustics. They have a 30 day trial, are easy to set up using the You Tube tutorial, and no damage to walls. The Zilplex and Acoustic Art systems are labor intensive to optimize the room sound. However the time is worth it.