It is ETF time again and this year the promoters took into consideration 'Birthday Month' so Jackson and Slagle are going with mercury and nickel. This year the competition is for a preamp power supply and 16 different designs will have at it. Of course a little pandering to the judges always helps!
Off-beat Enclosures Prove To Be On-beat For Hi-Fi - Love this article on enclosures from 1956. Good stuff. http://www.itishifi.com