JB872

thx for the link but $50 a fader seems a bit steep. I need 25 faders for my setup which would work out to $1100 if I went through Mouser.

I'm having the same problem up here in Canada with both the Alps and Panasonic faders. Is there another alternative?

Hi Pilo Hopefully you still stop by this thread once in a while because after doing an extensive search you seem to be the only one that's attempted to incorporate the PGA chip into a midi box....and I could use your help. On paper this chip seems perfect for controlling analog volume, but how did it really hold up? Did it add any noise or artifacts to the audio signal? Was there any degradation. How does it compare to a true analog fader, VCA's, VCR's, and other IC volume controlling chips? Maybe you could also tell me what MB modules are needed to make the PGA chip work. So far I've gathered that you need the core and Aout modules. I'm still not sure why the Aout module is necessary. Any help would greatly be appreciated. thx Jason

I did some more searching on the site and found a similar project to what I'm trying to accomplish. Here's the link http://www.midibox.org/forum/index.php?topic=6061.0 The difference between this idea and my own is that I will need 24 inputs and outputs rather than just 8 inputs. And there's no need for me to sum up the tracks into a stereo L and R output because I'll have a Folcrom following the Midibox. My main goal is to preserve the quality of the audio while being able to control the volume from Sonar via Midi through a simple midibox design. What IC's would be best suited for this application?

Just read this thread and its pretty similar to the idea I have in mind. Have you made any progress on the mirmixer? Jason

thx for the warm welcome and taking the time to help out. My input signal chain is something along these lines: instrument/mic > TG-2/True System P8 > compressor > motu 24io AD Yes, I'm looking for midi controlled audio faders to control audio levels themselves. I would also like to record the automation movements of these faders on dummy tracks in Sonar for easy recall. This kinda leads me back to the first idea I had which doesn't pass any audio across a fader. I've attached a diagram to help explain what I'm trying to do. I'll probably end up buying a Mackie Control to save myself some time and focus on building a midibox that will work will the controller to attenuate the physical audio levels post DAW and compression Very much. thx again. I'm gonna look into the MBFX and THAT 2180IC to see if that will work for my setup. Jason MidiBox.JPG

This is my first post and for starters I gotta say I can't believe a forum like this exists. For weeks I've been searching for some info on diy midi controllers and it looks like I found the right place. First off, I have to admit that I've only quickly read over the ucapps.de site and will have to go over everything there a couple more times before I even begin to comprehend how these MIDI boxes work. I was hoping that by stating my goals, the experts at this site could steer me in the right direction as to what MB Hardware Platform's I should concern myself with inorder to make my idea work. Current Setup Output Signal Chain when mixing Sonar 5 > motu 24io >outboard gear > 2 Folcrom summing boxes Sonar is basically being used as a recording medium and the make up gains on my compressors are being used for volume control before the folcroms. Ideal Setup Sonar 5 > motu 24io > outboard gear > 24 motorized faders > 2 Folcrom summing boxes It would be nice to have analog faders to control the levels before the summing box rather than setting the levels in Sonar before compression and effects. I plan on setting up dummy tracks in Sonar for fader automation and recall purposes. Any help would be appreciated especailly from those who have tackled similar projects. I apologize for the long first post. Jason