Will sub help my Proac 1SCs fill new larger room?


I'm moving from a 10x11 room to a larger room, maybe 15x15 or 15x20, when I buy a house. My 1SCs without sub have plenty of bass in my small room. With a good sub, can they work in a larger room? How large?
Straight ahead jazz, fairly loud not blasting, Music Reference RM-9, CJ PV-5.
Thanks very much for your thoughts.
river251
Hello River251. I have echo busters on the walls and free standing Furutech screens between the SC speakers and at the first reflection points. I do high pass via the NHT sub amps. the subs themselves are in the front corners an are on spiked amp stands supported by steering wheel covers.
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Bob, I don't know much about REL so don't know what you mean by the REL philosophy.

I'm not clear what you are suggesting for my One SCs?

Thanks
Jim