How do I open DUET - 2.0 COMPUTER SPEAKERS BLACK

Hi, carefull remove the black plastic cover , above keyboard, where the speakers are. Go from there.
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mcdevito75 here, Try to increase the volume from your keyboard, Then adjust the volume at the speakers, there should be only 1 volume control on 1 speaker to control them both, also check your connections at both speakers.

Make sure the power supply is plugged in and getting current. The speaker plug on most computers is usually green.

1. cut , strip and insert. use red / black same on terminals on stereo.

most of the logitech device are plug and play, all you have to do it just plug it to the computer CPU and it will turn on automatically

yes..the only solution is to pop the front panel with screwdriver...to do this more efficiently (without breaking the front panel) ...first insert the thin screwdriver in the gap in front lanel on side wall...and rotate the screw driver 90 degree..this will pop that side....repeat it on other sides too...i did it last night only.....
my problem was that when i dropped the speaker....its magnet fell down...and its no longer working...i am trying to find another broken bose speaker to replace mine...from e bay,,but no luck till now :(

I really don't know, because some of the newer gadgets come with fixed volume control due to law suits, ect. Try to see if you can bring you TV menu up and see what the sound setting is.

If you have another computer or a friend, test them on his/her computer. Try this, as its fixed such a problem for me in the past. Start>All Programs>Accessories>Entertainment>Volume Control Then check the ticked/unticked boxes

since u hav removed the mesh and the 4 screws that hold the case of the speaker .As you said that the speaker has no opening points , most companies manufacture the speaker by sandwiching two parts together. In order to open the case of the speaker , you will have to see for a joint line on the edges . it indicates the attachment between the two parts of the speaker . If you find an opening at the back of the speaker as you have mentioned , try to remove the two joints of the speaker by pulling gently at the opposite ends .