Dana and Mike welcome to the forum,
I am guessing Dana that you are going to use this bedroom for an HT setup and not sleep there with all the associated furniture.
What are your medium bedroom’s dimensions?
I have a 7.1 system powered with an Onkyo TX-SR 805 130 WPC AVR and it supplies more than enough power/volume to a 4500 cu/ft area and I like to sometimes really crank the volume. A few times I have run full volume with my 10 Aperions just to check the SPL of my setup and I reached 116 db with ear-muffs on and that was LOUD.
I agree with Mike in that the current model 4308 would certainly be overkill for a small room like that or maybe your idea of a medium bedroom is different than mine.
My Aperion Speakers:
2) 632 L/R, 2) 532 L/R, 1) 532 C, 2) 534-SS, 2) 422 rear surrounds and an S-10 Sub.
8 driven by Onkyo TX-SR805: Great high power AVR
2 driven by Sony STR-DE997: Mediocre AVR that cannot supply the stated power to all channels.
I did not plan to have a 10 speaker setup but I bought these speakers over a 3-month period and after quite a bit of re-arranging and setting up my 7.1 I decided to keep them all.
Jack