Active Boom Box BX-125 BX-125 2.1 Speaker Box with Amplifier 8" Bass Tube Covered by PVC Woofer: 8"  Magnet: 20oz Voice Coil: 1.5" Foam Edge, Paper Cone 5" 2-Way Car Speaker Magnet: 8oz Voice Coil: 1" Rubber Edge, PP cone Max Power: 300W Frequency Response: 30-18kHz Impedance: 4ohm Size: 210x210x370mm(8" tube), 210x210x110mm(5" box) BX-115 12" Carpeted Speaker Box With LED light & Amplifier with USB and SD Jack Magnet: 30oz Voice Coil: 2" Foam Edge, Paper Cone Tweeter: 2x3" Piezo Max Power: 400W Frequency Response: 40-20kHz Impedance: 4ohm Sensitivity: 90dB Size: 485x355x160mm BX-114 6.5" Carpeted Speaker Box With LED light & Amplifier with USB and SD Jack Magnet: 10oz Voice Coil: 1" Rubber Edge, PP Cone Tweeter: 2x3" Piezo Max Power: 300W Frequency Response: 30-20kHz Impedance: 4ohm Sensitivity: 90dB Size: 500x250x135mm