Dante,
That makes perfect sense. The speakers only have one voice, so they will sound the same. You're just getting more of that voice from another direction which makes it sound bigger, but that was the goal of this experiment, wasn't it?
How is this working out for your drummer now?
I think I'm going to look into some of these WGS speakers for some of my Fender amps. I'm not sure which ones I need, and one amp in particular is going to be a bit tricky to shop for speakers for, my Vibrolux. Finding 10" speakers that will give that amp a bit more range is difficult because there isn't much out there to choose from. That's one of my favorite amps to use in a single amp application, but like you experienced, drummers complain they can't hear it. I do have another option, but I'm hesitant about going for it. I have an old Twin Reverb shell that has been sitting around in my basement for a few decades. It's stripped of all the tolex, and I had a friend of mine paint some native American art on it, I suppose I could shellac over that and modify it to fit my Vibrolux in it and add a couple of 12" speakers and that would probably give me more of what I need in a live setting. I just hate to mess with something that already has a great tone.