Originally Posted by Nickff
Right, I thought setting the fronts as large and then choosing LFE+Main would mean the sub still handles the LFE and then the sub and fronts get all that is below the fronts crossover...essentially giving a bit more bass from the fronts.
Currently, everything is set to small and crossed at 80. I thought switching the fronts to large and choosing LFE+Main would only add more bass from the fronts and sub.
I easily could be misunderstanding all of this...
No, you have it right. LARGE with LFE+MAIN would mean double bass.
Whether it's a "good idea" though is questionable. You will get more OUTPUT in the bass region because of the extra bass sources, but you are essentially guaranteed to have "lumpier" response in the overlapping region.
Remember that with XT32, the subwoofer(s) are EQ'd as a summed response to yield flat output through their passband, and then the speakers are similarly EQ'd to be flat with their passband. When you apply a crossover filter, the response is flat both above and below that point as each speaker is doing its thing independently. However, if you now overlap the two responses (rather than crossing over) you are combining the flat subs with the flat speakers... but the sum is NOT going to be flat anymore because of how the bass region interacts.
So it's a tradeoff, and you can use your ears to decide if it's acceptable to you. A far better solution would be to add a second subwoofer IMO.
Side note, and obvious question, but have you tried turning the sub up? Perhaps it's just that the "calibrated" flat bass is a bit too thin for you, and running the sub 3-5dB hot might just do the trick. Forgive me if you've already tried this.