it's been many years since I messed with this, so what I'm about to say goes off memory and I don't really have a way to verify the accuracy of this
what you need:
-obviously the CT1748 ASP chip
-Win9x or NT4 (it might work with NT 3.x also but I never used NT 3.x so I can't test this)
Assuming you have a FRESH install of Windows:
1) use/install whatever default drivers that comes with Windows
2) Download and install CSPU.EXE (or install directly from CSPU directory on my compilation CD) in real DOS (reboot and use the F8 menu to do this)
3) Reboot into Windows, then download and install SBW95UP.EXE revision 5 (or SBW95UO.EXE on my compilation CD)
4) Copy all extra .csp files from the SB16 directory (somewhere in there) to the Windows System directory (or unzip scodecs.zip from my compilation CD)
5) Run QSound Control Panel from Windows and enable "Automatic Pan" for "L <- R" for left speaker and "L -> R" for right speaker. Set the duration to something "ridiculously high"... I've been using 50 secs.
6) Move the "Position" sliders slightly off center by a couple of notches. I believe I had left slider set directly above the "P" and "a" in the word "Pan"
7) Minimize this app, DO NOT close it and then play some wave file that's a good stereo test of your liking to test this
hopefully that should work... I told people this "recipe" on an IRC channel more than 10 years ago and they reported it to work
I believe I tried the revision 6 drivers before and it didn't sound right... I believe creative removed the code to allow this to work... I think it's safe to assume it won't work with the last revision 16 drivers
this ONLY works in Windows and with wave audio output only... it worked fine for me in NT4 also using the latest drivers (earlier drivers causes random BSODs)
I never really noticed it working in DOS, so I declared it broken
if you want QSound MIDI, use either a WB2 or early AWE32 drivers/AWE Control Panel... I don't know which version got the QSound functionality removed... probably sometime in 1995 when Creative stopped licensing QSound... and as for the "Reverb/Chorus" only bullet option in AWE Control Panel many of you have only seen, this is why... because QSound used to be a selectable option.... the QSound MIDI option doesn't disappoint if you don't really need to pump up Reverb/Chorus for certain songs!
it's really broken also in Windows as Archer Communications (before they were called QSound Labs) had a hell of a time writing the QSound algorithms for Creative because those dickheads wouldn't give them all the hardware info... this is why you have to jack the settings way up to get any effects
don't expect crazy stereo spatialization like SRS or even the shitty Binaural 3D Sound bullshit... for one thing, this QSound is "broken" and is not quite up to par to their standards, but it works pretty good for the most part and the audio sounds pretty natural like a true working QSound instead of the overdone garbage you hear from SRS or Binaural... I barely been able to notice much difference between my AWE32's "broken" QSound and the QSound from my Via Envy24 sound card
regardless, the QSound implementation from these drivers are for speakers only... all this stuff was written before the headphones variation of QSound came out (I think it was 1996 or 1997 when it finally came out with the QSurround software remixer... was a CPU/memory hog)... I've included a scan of the Creative Labs QSound manual on my CD... the first few pages will show you correct speaker positioning for you to achieve desired effects... poor/incorrect speaker positioning will give you no effects
you can try the revision 6 drivers to see if it breaks the QSound, but I wouldn't go any newer than that as I am very certain QSound stops working from there... I just don't remember for sure if it was rev 5 or 6 that was the stopping point... all I know is I saved these older drivers for a good reason