Thanks, Richard, I should have remembered that.
John
At 07:21 PM 3/7/2008, Richard Brewster wrote:
>There is no op amp in the 490. It is a Moog 904A emulator, all
>transistors, with a dual OTA output buffer. In the theory of operation,
>Paul Schreiber wrote, "A passive mixer is used to mimic the loading
>effects of the 904A filter...". Is the lower output level of the 490
>really a problem? It's still much higher, I believe, than the output of
>a real 904A. It works fine for me, as is.
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