(1) Powered sub woofer, 12" large butyl roll (down firing) surround, sweep tested 30Hz OK, RCA input & (line level), speaker level in's (banana), crossover control phase switch 0-180, auto off / on switch, (black oak) + gloss dark grey top, 14'' wide 18" deep 17" tall, level control on front side, good deep bass, low use tested, cleaned switches & controls, slight scuff on top surface, Condition #9-