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09.08.2009 02:22  Stefan Lindberg
Will the ST timer effects work if the AY8930 is on a cartridge?
07.08.2009 12:15  Lars Baumstark
gwEm - as soon as some people experiment with the new abilities of the �30 I could make a ROMPort epxansion (this would be especially nice for those Falcon owners or people who don�t want to mod their STs). On the other hand I wouldn�t like to see too many different ways that have to be supported by new software. We�ll see what the remaining active Sceners want to have...
BTW: A quality sound output could be easily added to the PCB that will contain the compatibility switch logic. How about a stereo (L: A+1/2B, R: 1/2B+C) line-out as i.e. 3.5mm or Cinch?
06.08.2009 18:43  gwEm
stefan - those are really good recordings.

it seems clear that the AY is too much de-muffled compared to the YM by completely removing this capacitor. i think its pretty important to get as close as to the same as the stock sound for composing reasons.

lars - what do you think about my idea to make the AY on a separate expansion cartridge?
05.08.2009 21:58  Stefan Lindberg
Also i have not modified the volume in those recordings, this is exactly how differnt they sound to each other.
05.08.2009 21:56  Stefan Lindberg
Two recordings by me. One origianl YM setup and the other AY8930 without the cap. (40 mb, FLAC)
04.08.2009 18:53  Lars
Another hint for the AY/YM comparison:
Set the YM MP3 recording to +100% (i.e. in iTunes) - then the experience of the recordings (AY unmuffled, YM original) is quite the same!
04.08.2009 18:48  Lars
First of all - thanks for your action and taking part!

@gwem: It�s C10 in the schematics you linked below.
This cap just represents a low-pass filter (higher freq�s are suppressed). You won�t get more bass with/without it - just in the total mix of all output setting 100% amplitude is different with/without the cap. So in relation it might _seem_ that there�s less bass without the cap - in reality it�s the same absolute amount of bass frequencies, but more absolute contents of higher freuqncies (that�s what "unmuffling" is about here ;-)

My hint is: Go hear it on an original system without any recording stage in between and (important!) on YOUR amplifier and loudspeakers. That�s the real thing for all comparisons...

@Stefan: Of course it�s possible to find the right individual cap for everyone�s taste. Just experiment with any value between -say- 10nF to 100nF. I�m fine with no cap at the moment. As said before - try the real hardware without any additional (recording) stages in the audio path.
04.08.2009 05:27  Stefan Lindberg
About the volume of the recordings... i think Lars has amplified them until they reach their clipping point and as the (unmuffled) AY recording has less bass than the YM then it was possible to amplify it a lot more.
I agree that the modded AY sound a bit too bright as it is now, what about putting a lower value cap there instead of removing it?
03.08.2009 21:39  gwem
i mean of course modded AY sounds a bit brighter than default YM
03.08.2009 21:38  gwem
if anything the capacitor removed version is a bit brighter. the difference between the muffled and unmuffled versions in massive.

is it c10 or c8 on these schematics?

i guess c10? maybe a bit of experimentation might be nice to find a better match

what is the real difference in volume between YM and AY, in these clips the AY one is alot louder, making comparison harder.
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