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In the Forum: Audio Discussions
In the Thread: Initial thoughts about new/old Lamm ML2s
Post Subject: Feedback and voltage regulationPosted by Paul S on: 10/3/2007
I like the way Steve Bench writes. His understanding is so clear it almost shines through my ignorance.
Obviously I am still a long way from understanding these things in either abstract or amp-specific terms, but one part of the voltage regulation article just raised more questions about feedback for me.
I certainly do not know, but if I had to guess then I would guess that the ML2 uses some sort of error amplifier with the 6AK5 involved in that feedback arrangement. I don't know how to explain this idea other than to say that it seems like the 6AK5 somehow affects "organization" as opposed to making its own sound, like the 12AX7 does. I'll try to think some more on it.
To understand any of this I will need to be able to relate it back to what I hear and move back and forth from technical to aural terms so I can thereby "identify" the technical stuff in terms of my own experience. Recent "bad electricity" revelations have shown me that it can be hard to source/explain things I can hear. It sometimes takes making a wrong assumption/choice (or several...) and acting on it before I can trace an audible electro/mechanical effect. In the best cases I might come up with an expanded sense of an audible effect that allows me to better differentiate what I hear. Typically my ability to explain any of this lags still farther back.
Best regards,
Paul SRerurn to Romy the Cat's Site