Bose SUB1, Portable Powered Bass Module - Black wireless-transmitters It also has ventilation holes

It also has ventilation holes to prevent the subwoofer from overheating

Power Draw Total (All LEDs @ Full On): 45W

Input/Output Connections: Active balanced XLR and 1/4″ TRS {XLR pin 2/ 1/4″ tip = Hot (+)} Unbalanced RCA

Shipping Dimensions: 26" x

Bose SUB1, Portable Powered Bass Module - Black wireless-transmitters It also has ventilation holesThe Bose SUB1 is a Powered Bass Module in Black. A powered, portable bass module, the Sub1 subwoofer combines with virtually any portable PA and delivers low end performance down to 40 Hz. Its unique 7 13 high excursion RaceTrack driver allows for an ultra slim enclosure, delivering a performance that rivals traditional round drivers without the cumbersome size, freeing up room in your vehicle and on the stage. Compared to the Sub2 subwoofer, Sub1 is