Hello, I soldered a 47K resistor between pins 3 and 9 of the NES expansion connector to enable the extra sound channel in my PAL NES and then tried the jp castlevania 3 using my everdrive N8, but the extra sound channel didn't sound. Is this mod possible on a PAL NES? The pins for the PAL model are 3 and 9? Also, my NES is RGB modded using etims board. I followed this guide: http://www.retrofixes.com/2014/05/open-hidden-sound-channels-in-nes.html Thanks!
Just mono, but I'm using an SNES AV out connector and the sound is wired to both left and right. So mono on both channels