Maybe its the room and not the gear. I have 3 REL subs: 803d3 MC462 & C1100 + d1100 combo and no brightness. I previously had Sonus Faber Guarneri Homage hooked up to the same system and the 803's are superior in every way except for vocals and strings. I still enjoy SF's in another room. My room is 15x25: Its a short wall install 3' from the back wall & 31/2' from the side walls: The room is fully carpeted with paneled walls and a angled wood ceiling like a church: So the take away is that this is a dead room so if there is brightness it is offset by the rooms deadness.
So maybe some room treatments would be better than chasing the unknown and a lot cheaper than taking a financial bath selling your new equipment: You can consult your dealer about auditioning the Mac room correction MEN220. My friend has 601 monos 802d3 and c500t preamp and his room is a very bright and he told me that it made a night and day improvement and tamed all the brightness. He even offered to let me try it but in my room I felt it was unnecessary. Keep in mind that All the recommendations on this forum are people just guessing or making assumptions on a preconceived bias. There is no way to find out unless you make the expensive decision to change the gear only to find out that your new replacement has issues to. Good Luck: Keep the gear a little longer and treat the room or try to audition a MEN220.
So maybe some room treatments would be better than chasing the unknown and a lot cheaper than taking a financial bath selling your new equipment: You can consult your dealer about auditioning the Mac room correction MEN220. My friend has 601 monos 802d3 and c500t preamp and his room is a very bright and he told me that it made a night and day improvement and tamed all the brightness. He even offered to let me try it but in my room I felt it was unnecessary. Keep in mind that All the recommendations on this forum are people just guessing or making assumptions on a preconceived bias. There is no way to find out unless you make the expensive decision to change the gear only to find out that your new replacement has issues to. Good Luck: Keep the gear a little longer and treat the room or try to audition a MEN220.