Originally Posted by jhbrandt
My recommendation would be; Absorptive ceiling (50%).
The rest could be checker-boarded with PRDs - like the RPG skylines.
Hmmm... I would also recommend changing those dimensions a bit. - All three dimensions have 10 in common - this could be very bad
in terms of modal activity and make the room 'hum the tune'. If you cannot change dims - go with a fully absorptive ceiling - and/or maybe make a shorter wall double slanted (Geddes approach) to throw the waves into the oblique.
What do you recommend to be the distribution of absorbent and RPG diffusors? Would alternating them be a good idea?