Looking at some options and opinions. I have a 17.5x13.5x10.2' room. I currently have a pair of 12" Rel 1205 subs I had in my living room setup, now with a new dedicated room build I want to upgrade. I am also trying to take advantage of the Trinnov waveforming tech well (cylindrical as I cannot raise the subs on the walls). My idea was to get a pair of Perlisten R12, R15, or if the D series would be necessary, although im not too into the gloss finish as these will sit right under my screen. I would be placing the 12" Rel's in the back as the absorption bit of it until I can upgrade those as time and finances allow.
Goal is to get deeper and more accurate bass, my rep's now show there limitations, especially on action movies like "no time to die" car scene with the machine gun spray, as well as others like blade runner 2049. and with waveforming to get more consistent bass in all seats.
Currently have a 7.4.2 setup with KEF 5160's all-around bed layer, KEF 250RRM for atmos, Trinnov Alt16, Amp16.
Thanks!