|DTQWT mkII, built by Albert
Copyright 2010 © Troels Gravesen
Attached please find a photo with my new set-up. You could find a pair of 2A3se on the last photo and as you said the small se amp would not be the amp to do the tricks. I therefore make another amp with bigger power for them, an OTL with 6C33C. With this 25 watts amp, running for only about a week after it was finished, it shows its authorities that I dont have to play loud to feel the big impact and big/wide sound stage.
Since I have an old version and before Im going to order parts for up-grade. I therefore did try a minor modification on tweeters crossover by changing the 2.2 ohm to 1 ohm and to my ear the highs are more vivid and alive. I can hear better precision and clarity after the mode. There is no hint of aggression, nothing sharp or edgy.
The very best just got even better, not perfect but just got closer. You will not be too surprised to hear that the treble itself has improved, but in some ways the upper frequency region is surprisingly neutral, the most neutral I have ever heard.The bass was clean, fast and bass extension was not lacking, but the sense of weight and of power was always there. The mid is lush and smooth, also open and airy, and the whole system snapped into focus at a listening range.
I leave 4 feet behind the speakers so to ensure the best bass/mid balance, and a clean, open and airy sound stage. Thanks again for sharing/guidance and hope your idea is endless so we could from time to time have chances to up-grade our system without breaking the bank.