#01 Can the FR-1 be mounted on the wall/ceiling and tilted down towards my favorite chair?
You can mount FR-1 speakers on any standard 100×100 mounting bracket. If they are off the wall, you will be missing energy in the lowest frequencies, which will not be a problem if you support them with a subwoofer.
#02 Can FR-1 be used as a center speaker, lying down?
This is not recommended. The FR-1 is a two-way speaker with a passive radiator. It is not a center speaker design, and dispersion is not optimal when the FR-1 is lying down.
#03 Which model is better, FR-1or MH with BW?
That depends entirely on the room, room size, styling, and practical placement. The FR-1 are passive full-range speakers, while the passive MH speakers additionally require one or two BW to be placed, wired to the amp, and connected to mains power. The FR-1 sounds good as it is, while the combination of MH with BW allows more fine-tuning in the bass to meet individual sound preferences by adjusting the BW settings, either on the BW itself or conveniently in the menu of the TDAI amplifier.