home cinema speakers

Hey guys, I bought from a store a surround system with 3 front speakers, 2 surround speaker, 1 subwoofer, 1 receiver and 2 ambient speaker for the adjacent room. What I paid for were 3 focal dome as the tweeter and front L R speakers but the store just told me they discontinued this speaker and...

I am planning to replace current audio amp to enable my main stereo speakers (Heybrook Quartets) to take the surround front L & R from Denon 3800 av amp, and replace the centre speaker - currently old Kef 'egg' with a better speaker that will complement the Quartets. Perhaps one with a fabric...