Power Supply Specs for 2-Speaker, 3-Speaker and SoundCube

What are the power requirements for the 2 Speaker, 3 Speaker, and Sound Cube? 

Sound Cube:

 

18V, 1666mA, 30W

 

 

 

2 Speaker Boombox:

 

18V, 1666mA, 30W

 

 

 

3 Speaker Boombox:

 

24V, 1680mA, 40W

 

 

 

DC Power Connector dimensions:

 

Outside Diameter (O.D) 5.5mm
 Inside Diameter (I.D) 2.0mm
 Barrel Length 9.5mm
 The plug is center-positive type