i have a logitech z-340 set, one of the sats is dead, was givin to me free. The speaker in the sat is 2" shielded 4ohm 5w. I cannot locate exactly what i need here. Also have contacted logitech and they wont sell me a replacement speaker. Could anyone point me in the right direction please? thanks for the help(if anyone has a dead logitech set, but the sat speaker is working, would you want to sell the speaker only?)