I have been working on a replica of the AMT Tower, The drivers I am using is the "great Heil" and an Audax HT240z. The Audax is a 93 db 4ohm woofer listed as a 10 inch, in all actuality it is more like a 9 inch. This woofer is very fast and is an excellent match with the Heil, althought still had to use a autotransformer to pad the Heil 10+db. The crossover is also DIY using all poly and foil caps T2A Autoformer and copper foil inductors, configuration is Linkowitz-Riley 2nd order @ 2500Hz. The outcome is one of the most amazing speakers I have ever heard. The Heil produces details that are mind blowing , the woofer transline configuration produces low bass, there is really no need for a sub, the midrange is very smooth never overdone, I really cant say enough about this fine speaker.
Another great combination for the Heil AMT is the Audio Nirvana10 or 12 inch, I installed the super 10 in an O/E pair of AMT Towers crossed at 5k. In comparison the Nirvana has bolder mid range but suffers in the Bass arena, where to Audax shines.
I have noticed alot of complaints about the Heil Shout, initially I thought the Heil was a little harsh on some songs and flawless on others. What I found is the Heil is as/or nearly as revealing as Horns and really love being driven by tubes. I dont have my Tube amps yet, but I picked up and amazing low buck DIY tube pre-amp on ebay Called the Mini Spice. This fun to build kit pre-amp comes in many configurations, bare boards, stuffed boards and sometimes plug and play. I reccomend the stuffed boards to keep it simple, then add you own favorite parts. I used the Goldpoint Mini-v attenuator and a Greyhill switch. The great thing about this pre is that it uses 3 12ax7's 1/2 tube is used per side this makes it possible to roll any 12a family tubes throughout the preamp to change sound and gain.
Another great combination for the Heil AMT is the Audio Nirvana10 or 12 inch, I installed the super 10 in an O/E pair of AMT Towers crossed at 5k. In comparison the Nirvana has bolder mid range but suffers in the Bass arena, where to Audax shines.
I have noticed alot of complaints about the Heil Shout, initially I thought the Heil was a little harsh on some songs and flawless on others. What I found is the Heil is as/or nearly as revealing as Horns and really love being driven by tubes. I dont have my Tube amps yet, but I picked up and amazing low buck DIY tube pre-amp on ebay Called the Mini Spice. This fun to build kit pre-amp comes in many configurations, bare boards, stuffed boards and sometimes plug and play. I reccomend the stuffed boards to keep it simple, then add you own favorite parts. I used the Goldpoint Mini-v attenuator and a Greyhill switch. The great thing about this pre is that it uses 3 12ax7's 1/2 tube is used per side this makes it possible to roll any 12a family tubes throughout the preamp to change sound and gain.