Nes Stereo Audio Mod | Audio-Digital.net

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NES Stereo Sound Mod. : 5 Steps - Instructables

https://www.instructables.com/NES-stereo-sound-mod/

NES Stereo Sound Mod.: Tools needed:Safety glassessoldering ironknifepliersphilips screwdriverdrill and bitsMaterials needed:(2x) uf 1 50 volt capacitors(1) 47k ohm resistorrca audio jacks (red/white)around 2 feet of wire (I used speaker wire)

NES Stereo Modifications with Easy Schematics | RetroFixes

http://www.retrofixes.com/2013/09/nes-stereo-modifications-with-easy.html

NES Stereo Modifications with Easy Schematics. The NES came with a standard mono output. This was perfectly acceptable in 1986 but with the advancement in home theater systems and Chiptune musicians stereo separation is needed. This modification will bypass the hum inducing RF box, greatly improving the sound quality.

NES Mods | RetroRGB

https://www.retrorgb.com/nesmods.html

Here’s a list of Famicom games that supported expansion audio: http://wiki.nesdev.com/w/index.php/List_of_games_with_expansion_audio . A “stereo sound” mod. The NES actually produced sound two different ways and combined them into one output. You can tap into the pre-mixed audio and modify it so they each go to their own speaker.

Open Hidden Sound Channels in the NES | RetroFixes

http://www.retrofixes.com/2014/05/open-hidden-sound-channels-in-nes.html

Yes this mod only works with the original Mono output. If doing stereo mods and this mod changes need to be made. Someday I will update this article. Basically you need to find the source for the expansion audio and solder that to one of the RCA jacks. The CPU pins do not output expansion sound. Delete

NES Expanded Audio: 100k Pot Mod | The Curriculum Crasher

https://curriculumcrasher.com/2017/01/24/nes-expanded-audio-100k-pot-mod/

By kevinrburke on January 24, 2017. Like many others, I modified my original NES with a 47k resistor to support expanded audio playback. While connecting expansion pins 3 and 9 does access the additional channels, the balance is very inconsistent. This is due to variability in the chips added to Famicom cartridges and to the Famicom Disk System and how they were …

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