For my project I put in a 20 amp circuit just for the subs and 20 amp for the rest of the equipment. The electrical outlets in the room are on a 20 amp circuit shared with the outlets of a couple other rooms. Then the lights are on their own 15 amp circuit. IIRC I think I put in 7 new circuits for the entire basement remodel.

As for the subs getting their own circuit, I figured one circuit is ~2200 Watts (20a*110v). I may eventually use at least half of that in amplified power.

-Ben
HT v2.0
HT v1.0