Thanks gryphongryph. What DHT tubes are you running? I've settled for 45s. I have 7N7s in the 6SN7 circuit. Are you outputing both circuits? In my system, the 6SN7 circuit is driving the subs and the 45s are driving the open baffles.
Thanks @pdspiegel The Bastanis were sold back in the day as kits. Buy the drivers, caps, and resistors. Build the baffles and subwoofer enclosures. That model has changed. In 2021, I knocked over a baffle and broke a 12 driver. Contacted Robert for a replacement. The new 12" full ranger sounded much better than the model I had purchased 15 years earlier. Then I purchased two 15" subwoofer drivers and found a carpenter in Baltimore to build them. Later, I bought another pair of 12". My Baltimore arrpenter built new baffles. Now the only original pieces are the two 12" subwoofers, the tweeters, and the tweeters horns. They are 100 db efficient and I'm supremely happy. Yes, it's taken months to dial in the four subs.
Thanks much. The plexiglass preamp cover has a ventilation hole above each tube. I had it custom made by the same company that sells the cover for the turntable.
