TheRetromancer wrote:
So let me get this straight:
1 - You've cut the traces on Pins 45 and 46, and are connecting a wire with a 47kΩ resistor to the audio out circuit on the NESRGB. (I too have an Everdrive N8, so this is particularly of interest to me). I get this. What I don't get is that the Everdrive N8's OS allows you to set the expansion audio volume to High or Low at will. I'm currently playing my AV Famicom with the volume mix set to Low - are you saying that the NESRGB mod somehow negates or otherwise invalidates this? I remember adding a 33kΩ resistor to my toaster NES when I was using the N8 with a Fami/NES adapter from Gyromite, but this is a new wrinkle. I would greatly prefer a solution that did not involve actual damage to the AV Famicom, so I'm hoping there's an alternative to cutting traces.
2 - You've removed the 220µf caps (accidentally wrote 'resistors', my bad!) from the R-G-B video lines, as these are already in the Multi-AV SCART connectors. From a technical standpoint and my own curiousity, why does this cause a problem to have two sets of caps? From my understanding, capacitors merely store-and-release the signal, with the output being 'smoothed', as it were, and less prone to voltage spikes.
3 - You've cut the audio and composite video traces going to the Multi-AV connector to presumably prevent any sort of video interference while you're grabbing Sync. I'm not super thrilled at the idea of slizzity-slicing my AV Famicom, so I think I shall take your suggestion and use the Raw Sync version.
1 - Genuine Famicom carts with expansion audio are a lot louder than the high setting on the Everdrive. The AV Famicom does not mix audio properly - the CPU audio is too quiet relative to the expansion audio. This actually works out for the Everdrive with its lower volume output though. It sounds properly mixed on the AV Famicom. On older Famicoms genuine carts sound properly mixed, but the Everdrive's expansion audio sounds too quiet (even on the high setting). By doing the audio mixing on the NESRGB board, you can tailor the mixing volume with your choice of resistor.
2 - To be honest, I didn't even bother to check if leaving the capacitors in would work. I just popped them off cuz they were redundant.
3 - You can't really avoid trace cutting if you want to connect the NESRGB's audio and composite video to the multi out. If you don't want to mess with the traces, just use raw sync for RGB and don't use the NESRGB's audio mixing circuit. You're still getting the big prize anyway - crisp clear video from the RGB and s-video outputs. The cleaner audio output is just optional bonus.
