This is Stefano Bertoncello's Blog (ステファノ・ベルトンチェッロ - トゥーグッドイアーズ − ブロガー、オーディオ＆ミュージック・コンサルタント) devoted to pacific topics like Music - live and reproduced - i.e. discs, audio, guitars - both vintage and new, concerts, workshops, and related stuffs.
Furthermore: travelling - as a mind-game and real globetrotting, and books, movies, photography... sharing all the above et al. and related links... and to anything makes Life better and Earth a better place to stay, enjoying Life, in Peace.
Wednesday, November 12, 2025
QUADding 💫
Some old papers and manuals from my archives.
The Quad ESL manual has some clever sweet-spot and positioning calculations made by late Prof. Dragoun, the former owner of my first ESL pair, more than 50 (fifty) 😳🤭😳🫣 years ago.
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