| Re: Integrated Preamplifier [message #70560 is a reply to message #70550] |
Wed, 21 December 2011 19:56  |
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gofar99
Messages: 1903
Registered: May 2010
Location: Southern Arizona
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Illuminati (5th Degree) |
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Hi Wayne, An integrated stereo preamp-amp would weigh in at around 100 pounds. It would need wheels. I can envision a low power one with say EL84s or perhaps EL34s though. The prototype is using a remote control assembly other than yours initially as it makes the build a lot easier and there are fewer interface issues. That can can change as really once the design is in place any type of control can be used. I do have a working prototype of a passive remote with your chip set. Not quite perfect as I still have not found a display I like. Right now it is using a 3.5 digit 2volt digital panel meter. I feed it from one of the extra digipots that in turn is fed a 1.0 volt reference. That way I get readings for volume level in % from 0 to 100. Not real elegant but sufficient for testing purposes. The display is rather stable, but once in a while it will flip in the final digit if the actual level is in between the two.
Good Listening
Bruce
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