Use it to set the treble level
6) Bass
Use it to set the bass level
7a) Signal output
Use this jack to connect other amplifier or even another powered speaker cabinet in cascade,
using a 6,3mm connector
7b) Signal output
Use this jack to connect other amplifier or even another powered speaker cabinet in cascade,
using a Cannon connector
8) AC 110/220 Voltage Selectable
9) AC power
Use it to connect the AC power cord
10) On/ Off power switch
Press to power on /off the speaker box
11a) Button
Use it to On/Off MP3 player controller
11b) USB connector
Use it to plug a USB device with MP3 file.
11c) MP3 control
Use this control to set the volume level of the MP3.
12) MP3 player controller
13) Ipod Dock
14)1/4” jack self-lock
15) speakon jack
