For all you electrical experts out there, help me clarify a question I have regard Ohms and speaker loads.

I read this statement when reading about speakers recently.

"When the electricity passes into the speaker, some of it is 'resisted.' The ohms rating of the speaker is how much is resisted, and an indication of how much energy it takes to drive it - the higher the ohms rating, the more difficult it is to drive."

For some reason I was thinking the LOWER the Ohm rating the more difficult a speaker is to drive (i.e a 4 Ohm speaker is more difficult to drive than an 8 Ohm speaker.....2 Ohms more difficult than 4 etc..) I thought this was the reason so many amps are rated for a load 4 ohms and above. I've never seen a warning for driving a speaker rated for greater than 8 Ohms. So I assumed the higher the number, the less resistance. Sort of an inverse relationship. I also recognize that the rating on a speaker is more like an average....it can be higher or lower depending on the frequency. Thanks for your input.