Quote Originally Posted by alancohen View Post
So, I got one 30923 HF compensation circuit built. I'm working on the second. So far so good with the sound. It's hard to tell with both speakers going and not knowing what is supposed to be in each channel. But I'm hearing a nice rat-ta-tat-tat off a high hat in the right speaker and not so much in the left. I want to measure both, but I need to wait till my new mic shows up. Maybe I'll try the Samson for yucks.


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Looking good.Making some progress.. Here's a photo of one of a pair that I have of an original 30923 that I got with a pair of 1285-8B's.

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The 1285-8B's are adjustable from (500-800-1200) Hz which is nice for trying different setups.

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Here's a photo of the original 30923/30904's that ArtJ did for the Altec board.. I think Earl posted the schematic of it already but the photos were missing.

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