I wasn't speculating. A speaker needs to be driven by a voltage source, not a current source, which is why I referred to it as a voltage operated device. Of course it also takes current (and thus power) but so do virtually all electrical or electronic devices.So does a speaker, if there was any need to specualte, it's actually power driven, not voltage or current, but both
You've now gone from the realm of speakers, resistors, motors etc. to active semiconductor devices, there's really no basis for comparing them.
I was trying to give a somewhat generic explanation of the difference between a voltage operated and a current operated device with the speaker being one and the LED (which was the first example I though of) being the other. I wasn't comparing them other than to show an example of each type of device.