PowerPak Expansion Audio Volume

Discuss NSF files, FamiTracker, MML tools, or anything else related to NES music.

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loopy
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Post by loopy »

bucky o'hare wrote:Regarding the powerpak and audio expansion-
I was trying out some FDS games last night. The wavetable audio seems to be slightly out of tune, noticeably different than using Nestopia or listening to an NSF in notsofatso / nsfplug. I could provide samples later on if anyone is interested.
Yes, I suppose you're right.
I made some comparisons myself.
YouTube
bucky o'hare
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Post by bucky o'hare »

Ah, cool. Nice work!

Yeah it may be less obvious when heard as sfx, but when it's used melodically with the rest of the normal channels it stands out much more.
philexile
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Post by philexile »

Sorry to dig up an old post. I'm a new PowerPak owner and I did the resistor mod. I too noticed that the VRC6 channel is too loud in Akumajō Densetsu. You can barely hear the whip noise overtop of it. Anyone else notice that?
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RushJet1
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Post by RushJet1 »

philexile wrote:Sorry to dig up an old post. I'm a new PowerPak owner and I did the resistor mod. I too noticed that the VRC6 channel is too loud in Akumajō Densetsu. You can barely hear the whip noise overtop of it. Anyone else notice that?
I got a 100k potentiometer and used that in place of the 47k resistor. That way you can change the volume to whatever level you want (i matched mine to an emulator's vrc6 levels using a wave editor).
philexile
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Post by philexile »

Ha, that's pretty brilliant! Do you have any picts or video?
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RushJet1
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Post by RushJet1 »

Image
Loopy's included pic of the mod. That just uses a 47k resistor.. replace it with something like this:

Image
key: black thing toward bottom is the potentiometer with a knob in the middle, brown things are wires, yellow dots are soldered pins.


I will get a real picture sometime later today. I might not want to take apart my system completely because it was a tight fit / i didn't have really small wires to work with, so I don't want to screw it up :P

edit: mine actually connects to the leftmost and middle prongs of the potentiometer... the far prong was too much resistance.
philexile
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Post by philexile »

Oh, no need for more pictures. I get it! So it was a 100k pot? I just wanted to double check because the resistor is supposed to be 47 ohm.

I actually used two 100 ohm resistors in parallel to create 50 ohm, which seems to work fine. (I didn't have any 47 ohm resistors handy)
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TmEE
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Post by TmEE »

you would connect the wires to the potentiometer so that outer and middle pins get used. connection to outer pins = non adjustable resistance (potentiometer's value)
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RushJet1
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Post by RushJet1 »

Yes.. you'd want more than 50k in case you need more than 50k :P If you can find a 75k potentiometer then go ahead.. I couldn't though.
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