porifera

Responses from porifera

Heil AMT's - anybody have any experience ?
The old Heils were great for tube amps and vinyl records. Using the tweeter nowadays in a DIY approach is great for the hobbyist. The new woofers by ESS are lethargic at best. Use a Peerless or Vifa woofer combo to get better results. 
ESS and Heil air-motion tranformer - any thoughts?
Armyscout41 that sounds like a travesty of a design. Mounting another active bass driver in a location designed for a radiator is subjecting bass response to severe wave cancellation at all levels of the audible band. There is a significant reason... 
ESS AMT 1D: sell for parts or attempt to restore?
Best of luck enjoying those. The original truncated cabinet styles are very nice in the decor of modern homes and are well suited to solid state amplifiers also. Brand new components available for these all come from China so you're good to stay w...