just not produce enough power for them to work correctly

(may work at low volumes)

also, the adapter may over-heat ...

Then I guess that explains why hardly no sound is coming from them. My cousin hooked them up for my grandmother. Apparently that little punk can't do anything right. He was too lazy to use the power adapter that came with the new speakers. Instead he just used the adapter that goes with the old speakers. He screwed up the monitor when he hooked that up too. Moron.

Thanks for the help.