Rob:
That’s the best explanation I’ve seen on this whole process. I get it, now. Many thanks for posting. I wish PG Music would offer more videos, illustrations, examples, etc. with vocal outboard gear for those of us who sing and record with BIAB. That would be very helpful. After all, PG Music is offering TC Helicon products for sale on its web site. That being the case, why couldn’t they produce/offer a detailed video showing some of the vocal harmony tricks using BIAB? It’s tough to figure all this out alone. Thank goodness for this forum.
I think it's cool that PGM includes the TC harmony feature in RealBand. But I don't think a lot of people take the time to figure it out, and the final product sounds a lot like the old TC harmony technology: mechanical and computer-ish. But, hey, it's free.
Probably because a lot of people are not doing the BIAB/TC thing, as was mentioned earlier in this thread, there hasn't been an obvious need for an instructional video on using TC products with BIAB. Maybe WE should do one, huh?

I was surprised how little VL3X recording info there was on Youtube and the TC site. I really had to dig around to find what I was looking for to make a recording setup work. This is probably because the VL3X is marketed as a live performance piece of gear. But it's certainly much more than that. I'm really blown away by the quality of the harmonies. TC has come a long way since the TC VoicePrism. Hard to imagine it getting any better than the VL3X though, unless they start doing something similar to BIAB's Real Tracks by incorporating some "Real Voice" tracks into the VL3X. Now that would be cool. Guess we'll see. In the meantime I'm going to make extensive use of the VL3X on my original songs and covers in our studio. Fun stuff, eh?
Here's an original song we did for our last album "Smoky Bars & Steel Guitars" titled "Summertown." The harmonies in the choruses were created with the TC Helicon VoicePrism. About as good as it got back in the early 2000s.
Summertown MP3 from "Smoky Bars & Steel Guitars" CD.
Enjoy,
Rob