Hey guys,
While trying to figure a new take on the whole iMod/diyMod idea, I was trying to think outside the box and figured that there are so many ways to spend money on iMod/diyMod docks with expensive caps, etc. Now, that kind of daunted on me and I started thinking in a different direction. It's a DAC, plain and simple - so why are we thinking passive output stage with VERY expensive caps, what's stopping us from making an active output stage with a DC servo or even JUST a DC servo?. There's some food for though.
After the initial idea though, I'm a little stuck. I personally see absolutely no reason that the iMod/diyMod should be treated as anything other than a DAC.
A few considerations and directions this can go in (don't think any are limitations, and all can be pursued):
1) Portability comes to mind in that I haven't found many battery-powered output stages, but that doesn't mean there aren't any or that it's a limitation by principle.
2) Moving away from "portable", what about a simple DC blocking buffer (preferably one that does not use coupling caps as that's the only reason for this anyway). If not faced with portability in mind, I don't see why any of the available output stage designs can't be fed by the iMod/diyMod.
3) What about a simple DC servo with nothing else? Just block out DC with an opamp operating in high-frequencies way above hearing (say 100kHz) that does nothing other than block DC.
Ideas, recommendations, corrections, comments are welcome. Just wanted to toss an idea out there and hope it develops into something fun.
While trying to figure a new take on the whole iMod/diyMod idea, I was trying to think outside the box and figured that there are so many ways to spend money on iMod/diyMod docks with expensive caps, etc. Now, that kind of daunted on me and I started thinking in a different direction. It's a DAC, plain and simple - so why are we thinking passive output stage with VERY expensive caps, what's stopping us from making an active output stage with a DC servo or even JUST a DC servo?. There's some food for though.
After the initial idea though, I'm a little stuck. I personally see absolutely no reason that the iMod/diyMod should be treated as anything other than a DAC.
A few considerations and directions this can go in (don't think any are limitations, and all can be pursued):
1) Portability comes to mind in that I haven't found many battery-powered output stages, but that doesn't mean there aren't any or that it's a limitation by principle.
2) Moving away from "portable", what about a simple DC blocking buffer (preferably one that does not use coupling caps as that's the only reason for this anyway). If not faced with portability in mind, I don't see why any of the available output stage designs can't be fed by the iMod/diyMod.
3) What about a simple DC servo with nothing else? Just block out DC with an opamp operating in high-frequencies way above hearing (say 100kHz) that does nothing other than block DC.
Ideas, recommendations, corrections, comments are welcome. Just wanted to toss an idea out there and hope it develops into something fun.
