A few things:

1. The LFR-1100 has been in production for over 8 years. The purchase of Bryston has nothing to do with an explanation of the DSP.

2. Your amps need to have the identical gain in order to get the proper sound quality and holographic image.

3. The rear of the speakers have no bass, and the DSP recognizes this. Swapping to the front the DSP as intended to the rear will result in no bass.

4. What are your room dimensions?