Comments on: DIY KT88 + 6SN7 push-pull Amp / Part 1 http://www.larsen-b.com/Article/255.html Titanium Exposé Thu, 20 Nov 2008 13:10:59 +0000 http://wordpress.org/?v=2.6 By: JohnK http://www.larsen-b.com/Article/255.html#comment-1659 JohnK Wed, 23 Apr 2008 00:45:08 +0000 #comment-1659 Hello et Bonjour! Perhaps you should look for a simpler bias system to safe cash and simplify things. Cathode bias = No bias adjustment when you swap tubes! I recommend a fender deluxe 5Y3 circuit with cathode bias, there is no fixed voltage supply to the grids, the cathodes are grounded. Substitute rectifier tube with silicon diodes, or switchable recto. Tube rectifier in double-end amp = power supply sag = sustain. Very loud for a hobby amp. I've built a few SE amps from scratch, but would recommend using an old chassis from a 50's radio as a good starter project as well. I am planning an amp in an old mono radio phono unit, SE with all transformers in place, $25 at the auction. It will be the amp/record playing computer desk! anyways, good luck and merci pour l'anglais. Hello et Bonjour!
Perhaps you should look for a simpler bias system to safe cash and simplify things. Cathode bias = No bias adjustment when you swap tubes! I recommend a fender deluxe 5Y3 circuit with cathode bias, there is no fixed voltage supply to the grids, the cathodes are grounded. Substitute rectifier tube with silicon diodes, or switchable recto. Tube rectifier in double-end amp = power supply sag = sustain. Very loud for a hobby amp.
I’ve built a few SE amps from scratch, but would recommend using an old chassis from a 50’s radio as a good starter project as well. I am planning an amp in an old mono radio phono unit, SE with all transformers in place, $25 at the auction. It will be the amp/record playing computer desk! anyways, good luck and merci pour l’anglais.

]]> By: Paul http://www.larsen-b.com/Article/255.html#comment-411 Paul Tue, 30 Nov 1999 00:00:00 +0000 #comment-411 <p>Hello,</p> <p>Nice electronics page. I'm also looking into building my first tube amp and have been looking for a good schematics. Could you kindly provide a link to the webpage that have this schematic? This is by far the best-looking schematics I've seen. Thanks!!</p> <p>ps. if you could, please reply to my email @ <a class="reference" href="mailto:paul.p.pan@gmail.com">paul.p.pan@gmail.com</a>. Thanks again.</p> <p>regards, Paul</p> Hello,

Nice electronics page. I’m also looking into building my first tube amp and have been looking for a good schematics. Could you kindly provide a link to the webpage that have this schematic? This is by far the best-looking schematics I’ve seen. Thanks!!

ps. if you could, please reply to my email @ paul.p.pan@gmail.com. Thanks again.

regards,
Paul

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