Favorite Threads and Posts in "Solid State"

I'm following this thread (link below). There's very good info on whether or not replace "old" (but still good) transistors on vintage Japanese amplifiers...

http://www.diyaudio.com/forums/solid-state/269466-to92-transistor-replacement.html

Many start all this by replacing the electrolytics first and, at a certain point, someone comes saying: "don't forget to replace that "x" transistor as well!!".
A few times I followed the advise, then painfully regret it. The stock transistor in that 1977-78 amplifier was working very well actually.

I like these threads because a lot of myths simply are smashed!

P.S.: Of course, if the tranny is noisy and making problems, we replace it...
 
Last edited:
I'm having a blast with this one:

http://www.diyaudio.com/forums/solid-state/275171-improve-rotel-amp-thd-20db-15.html

And not just because I happen to have a Rotel RA-820AX gathering dust that won't know what hit it right after I finish other projects: it's a masterclass in modding and a wonderful learning tool, the perfect "now let's get our hands dirty" companion to Self's amp book. Miss it at your peril.

Cheers,

Cabirio
 
Member
Joined 2011
Paid Member
Learning and using LTSpice to develop your amplifier.

This thread contains 3 different projects:

  • A high performance 200W/8R / 400W4R amplifier
  • A high performance 70W/8R / 140W4R MOSFET amplifier
  • A high performance discrete opamp "MyDOA" in 2520 layout.
http://www.diyaudio.com/forums/soli...ormance-class-ab-power-amp-200w8r-400w4r.html

The index in the first post will be updated from time to time for a quick access to milestones.

Have fun, Toni
 
Multiple personalities

I had the chance to play a friend's solid state guitar multi amp a while back, and was fairly impressed at its ability to mimic various tube amps and configurations.
Has anyone seen an implementation for this in playback stereo amps? And no, I don't mean a tube buffer, which I've tried without them turning solid state amps' sound into tube sound.
My thinking is, with modern DSP, it may not be that difficult to profile a given tube's distortion profile, and impose it on a solid state amp's output.
Links or thoughts on implementing this?
 
Last edited: