If your Shadow doesn’t sound the same as what is in my video above, then you’ve got a problem with either the board or more likely the flash drive.
You mention a delay on the sound of the phurba. See if you hear it in the video. The button press makes a sound fire as well as the opto firing a different sound going up the ramp and then finally a sample when it hits a switch after. If I recall, my sample is a slightly longer duration effect than the stock as it shares the same sound sample as the phurbas in the video mode.
Personally, I think Pinsound adds more to these games than a color Dmd ever could. The sound is always noticed whereas the Dmd only matters when you look at it. I can’t imagine IJPA without Endprodukts mix or SWDE without my mix. I’ve got boards in TZ, STTNG, Shadow, SWDE, and IJPA and love all of them.
There was a lot of pain getting to the bottom of why the audio delays were happening until I finally found fast enough drives to handle the speed needs these games require. CD quality wav files being called up on the fly demands a lot of random read speeds. I finally found drives for each of these mixes that eliminates 99.9% of the issues. Occasionally I’ll find some rare sequence where a combo of files will trip up; but, my best guess is that is the nature of the hardware/firmware interaction.
I love Jerry Goldsmith’s Shadow soundtrack as it was pretty much the only thing I remembered from seeing the movie in theaters when it was released. Playing the Shadow with that soundtrack makes it worthwhile. Coming up with the rest of the high fidelity sound effects was the challenge. I used a lot of Tibetan gongs, chimes, and chants under some stock sound files online. Many of the non-game specific callouts come from the lossless Blu-ray’s center channel track.
The lightening strike in the multiball buildup is one I was never 100% happy with. If I recall, I have like 3-5 different cues that are all from real sound samples of thunder and lightening. I could never find a “crack” sample I was completely happy with; but, they all have a very healthy subwoofer rumble. Maybe I’ll go look again for one.
Bottom line with any of these things beauty is in the eye/ear of the beholder. With Pinsound, I personally couldn’t imagine buying one if there either wasn’t a orchestration I found examples of online I liked or if I didn’t find one - want to build for myself (like I did for Shadow, SWDE, and modified for STTNG).
If I was having the audio delays the OP mentions, I wouldn’t want to keep it either.
Good luck with whatever you decide to do with it.