Hi, I received the a set of JBL Creature 2 Speakers for my PowerMac G5 yesterday and they work great except for one thing. On the right speaker, there are two buttons to adjust the volume, however when I try and use them it has no effect, the volume doesn't change at all. Is the speaker control being overridden by something else? Is the speaker volume control simply broken? Any suggesting would be helpful. Thanks.
Power Mac G5, Dual 2.0 GHZ, Rev.B Mac OS X (10.4.3)