Pro Audio Design Forum

JR - Here's something you might look at WRT pan law: http://www.thatcorp.com/datashts/dn120.pdf I do think one might need an insert pre master fader dunno. Would anyone really need linear-action faders? Many of the OTB I see are rotary which would allow linear pots and linear dB control law. It woul...

I smell a road trip in my future....

Doug, stop by Texas on your way through and pick me up.

John - Thanks John. If you want to draw something up I can build and test it on a small scale proof-of-concept basis. Just the basic summing core is all we'd probably need. Doug - You could help greatly by providing a feature set. Be thinking about that. Once we prove the summing concept we'd need t...

John - I found the article I was thinking about: "Digital vs. Analog Summing" ProAudio Review July, 2007. I can't find it on their website, the search function there seems very, very slow. Google can't find it either. I can send you a scan of it. I agree that the kit business isn't going t...

Thanks Roger.

I still need to prototype the AD797 version to check stability. It will quite likely have a 619 ohm and a 1K5 Rfb network.

Ohhhhhhhhhh... you were talking about records...

Ha! No, what I meant to say was black leather. Sorry, my bad.

I'll dig for it.

There was a PAR article about DSP vs. Analog summation about a year ago. The guy that wrote it - and I'm paraphrasing a 4 page article - basically said that DSP-based mixes had a very narrow "fader" sweet spot. His opinion was, after doing the same mixdown both ways, was that analog soluti...

Thanks John for the post and info.

But as you know I have a better plan for high performance summing.

Yes I do. I'm looking forward to that. We all are.

Another compensation question for you John: Some time ago I saw a schematic for a distibution amp and in it they had used a 5534 as a polarity inverter with a signal gain of -1. It was an internal stage without external loading (cable). IIRC the Rin and Rfb were 10K. What was different about it was ...