Pro Audio Design Forum

"Removing the Constraints of C-MOS Bilateral Switches," W. Chomik, A.J. Cousin, Electronics, December 7, 1978. This is an old Idea for Design which I've used in modified form. This circuit is a good first start with both a series and shunt switch but with the switch outside the feedback l...

The Sanken SI-series of hybrid audio power amps have been discontinued for a very long time but I often see online requests for datasheets. Sanken SI-1010Y Power Amp Datasheet Sanken SI-1025E and SI-1050E Power Amp Datasheet Sanken SI-1000G-series: SI-1010G, SI-1020G, SI-1030G and SI-1050G Power Am...

The Signetics NE545 Dolby B Processor datasheet is a little hard-to-find.

Signetics NE545 Dolby B Decoder Datasheet

When We Invented the Personal Computer...," Steve Jobs, Vice Chairman, Apple Computer, Inc., Computers and People, July-August, 1981. We originally underestimated the enormous creativity people would use in applying our general purpose tool. Steve Jobs original 1981 essay: http://www.waynekirk...

This is an overall block diagram of the MS Matrix with added functions: Insert Bypass Mute for both Mid and Side Variable Mid SIde Level wit Bypass Pre/Post Mid/Side Solo https://www.ka-electronics.com/images/jpg/MS_Added_Functions_Block_Diagram.JPG Cleaner gif file: https://www.ka-electronics.com/...

I think you did Roger. And you can certainly use only a side pot here. I'll look for those drawings. It's funny, those pads that you put there including the extra grounds makes wiring the pot a snap. One thing I've found is that being able to rotate the control to full side allows one to hear all ki...

I was contacted today by someone wanting to build the MS matrix. They had the simple question: "How do I add a width control?" The obvious answer of course is to vary the ratio of mid to side between the encoder and decoder. If there's already a processor in that insert just use it's gain...

I was contacted today by someone wanting to build the MS matrix. They had the simple question: "How do I add a width control?" The obvious answer of course is to vary the ratio of mid to side between the encoder and decoder. If there's already a processor in that insert just use it's gain...

There is a preview of Chapter 3 from Elsevier here: http://www.eetimes.com/electrical-engin ... -Chapter-3

OK. Had a chance to play with the SE Dobrev circuit with imbalanced source impedances and the common mode rejection is poor. With that inverting input summing node hanging out there in the wild world there's a lot to not like about it. I think there's merit to the current pump at the input and the ...