Posted by 2wo [ 71.242.34.247 ] on May 22, 2006 at 23:35:03:
I have an implementation of the D3a running now. I used a honking big anode choke in place of the CCS and am currently running the cathodes unbypassed .
While I was under the hood. I retaped the B+ to give me 380v on the plate of the 300b at 70ma. I had been meaning to try a lower current, at the suggestion of several who thought it might help get the sound I am looking for. In any case it was the easy way to get the D3a plate to a good starting point 160v on the plate at 8ma.
I ran a few rough test, I will post them a little later.
As to the sound. They are more dynamic, which I thought was the chief failing of the past reiterations of these amps. Although maybe a bit forward. Need to let things run a bit.
I had started a post, more of a story really, on these amps. How they started what they’ve been and what I have been looking for from them. If anyone is interested I will finish it. I am a two finger typist so these things take time…John
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