fragletrollet said:
Hey Gustaf, been drooling over various stuff on your site for a while... a purchase is coming sometime in some form 8)
Maybe you could shed some light on the difference between this:
http://www.ka-electronics.com/kaelectronics/MS_Matrix/MS_Matrix.htm
and your MS matrix?
When I started it and wanted to learn about MS processing, I googled "Mid Side Schematic" and found the MS portion from Waynes circuit.
http://www.ka-electronics.com/images/jpg/M-S_Simple.jpg
I added the in- and output stage on it, pretty generic stuff using an in- and output balancing board I already did based on THAT chips, then I spent some time figuring out the level controls and the solo/bypass functions.
I would probably not have thought of (or even known of) the 1240 chips, if I hadn't found Waynes drawing in the link, so that is exactly as he did it. I thought about changing it after understanding it, but found it to be standard enough not to matter, and a shame to do so, since the chip is perfect for the task.
I made a point of not digging into his project for the addition of features not be a copy-cat, so I am not sure, but I would venture a guess that, being a lot more knowledgeable than me, he did a higher precision design with the ability to add a lot of features, while I did a board that works with the features I wanted which is pretty take-it-or-leave it/paint-by-numbers.
Gustav