I've put one of these in a machine with SB16, but I can't tell whether it's being used or not. The SB16 "speaker out" is connected to the Yamaha "line in", the speakers are connected to the Yamaha. Games seem to sound the same as with just the SB16. How can I tell if the Yamaha is working, and how …

I've got a few PCs set up for this kind of reason - my basic machine for old games is: Gigabyte GA5AX motherboard 768MN PC133 [runs at 100MHz but can be overclocked] K6/2 450 SB 16 + Yamaha SW60XG or SB AWE64 or EWS6WXL [depending on how I feel - I often rebuild here and there] Twin Voodoo 2s so I …