Posted by Damir [ 213.202.68.154 ] on January 30, 2005 at 12:02:22:

In Reply to: Re: and now to include "air resistance" posted by manualblock on January 30, 2005 at 11:32:35:

My toroidal PP OPTs have Lp=490H, and my "C"-core SE OPTs have Lp=22H, both are 3k primary devices:-). Later can stand 80 mA of DC current, but former maybe few mA before degradation of sound, and few more mA - DC saturation buzz. DC cancelation/adjusting between the PP pair is critical, depends of the OPT - toroids are more sensitive.
High primary inductance is one of the most important factors in getting "clean" bass/overall sound, low Lp OPTs sounds "warmer" (more distorted, if you like)...
There`s entire chapter about that in the book "Modern High-End Valve Amplifiers" by Menno Van der Veen - higly recommendable.

Replies:

• Re: and now to include "air resistance" - manualblock 13:48:18 01/30/05 (8)
  • Re: and now to include "air resistance" - Tnuctipun 14:15:10 01/30/05 (7)
    • Re: and now to include "air resistance" - manualblock 16:32:19 01/30/05 (6)
      • opinions - Tnuctipun 17:01:21 01/30/05 (5)
        • Re: opinions - manualblock 19:24:13 01/30/05 (4)
          • ooops.... - Tnuctipun 19:40:24 01/30/05 (3)
            • Re: ooops.... - manualblock 20:05:27 01/30/05 (2)
              • Re: ooops.... - Tnuctipun 20:16:06 01/30/05 (1)
                • Re: ooops.... - manualblock 22:03:44 01/30/05 (0)