Everdrive + expanded audio questions
So I got myself an NES everdrive.
I'd really like to get the expanded audio to work on my US systems.
I've got a stock Toaster model and an RGB modded Toploader.
what kinds of modifications would I need to do?
I'd really like to get the expanded audio to work on my US systems.
I've got a stock Toaster model and an RGB modded Toploader.
what kinds of modifications would I need to do?
Comments
If you upgrade your toaster to the Hi Def Kit, it should automatically have the audio expansion with it and you get a great picture, too.
Yes. It's great!
So I got myself an NES everdrive.
I'd really like to get the expanded audio to work on my US systems.
I've got a stock Toaster model and an RGB modded Toploader.
what kinds of modifications would I need to do?
On the toaster you just need the simple resistor mod on pin 3 to pin 9 of the expansion connector.
For the toploader, it depends on whether you are using the audio circuit from the console or the audio circuit from the nesrgb. If you are using the nesrgb then you have 2 options, a resistor from pin 51 of the toploader to the audio mixing circuit on the nesrgb, pretty sure 47k ohm is the recommended value, or you build the circuit that Tim recommends so that you can disable the expansion audio when it's not in use. Otherwise you will have noise.
Regardless, you will also need to modify the Famicom to nes adapter as well. You need to connect pin 46 on the Famicom side to pin 51 on the NES side. Depending on your adapter and what carts you are going to use, you may also need to connect pin 54 to pin 51 in the adapter.
However if you use the hi-def nes kit, then none of this is necessary. That won't help with your toploader though unless you remove the nesrgb.
On the toaster you just need the simple resistor mod on pin 3 to pin 9 of the expansion connector. For the toploader, it depends on whether you are using the audio circuit from the console or the audio circuit from the nesrgb. If you are using the nesrgb then you have 2 options, a resistor from pin 51 of the toploader to the audio mixing circuit on the nesrgb, pretty sure 47k ohm is the recommended value, or you build the circuit that Tim recommends so that you can disable the expansion audio when it's not in use. Otherwise you will have noise. Regardless, you will also need to modify the Famicom to nes adapter as well. You need to connect pin 46 on the Famicom side to pin 51 on the NES side. Depending on your adapter and what carts you are going to use, you may also need to connect pin 54 to pin 51 in the adapter. However if you use the hi-def nes kit, then none of this is necessary. That won't help with your toploader though unless you remove the nesrgb.
Thanks man.
Regarding mods, I'll have to double check my toploader.
at this point, the Toaster is just a backup unit for the spare room, I'm not really looking into modding it with any video upgrades.
What value resistor should I use for the toaster?
For the toploader, have you done either of these?
Finally, the everdrive I'm using is the NES form factor one, seen here
https://krikzz.com/store/home/31-everdrive-n8-nes.html
On the toploader without nesrgb I normally use 1k-1k2 ohm. On the front loader people seem to have varying opinions. Basically from 24k to as high as 100k ohms I have seen/heard of. If it's not specified by the console owner, I normally just go with something in the 90k ohm range.
On the nesrgb honestly building the circuit Tim recommends provides the best results but the 47k ohm will work. On your Everdrive, you may need to connect pin 54 to pin 51. I don't think krikzz ever changed the design to output expansion audio on pin 51 for toploaders.