August 4, 2008 Of all the equipment we use in our hi-fi and home theater systems, the thing that’s changed the least over the past 20 years is the speaker. After all, there’s only so many ways you can move air to produce sound. With that in mind, matching speakers to an amplifier should be easy, right? Well...it’s not rocket science, but there are a few key specifications that affect their overall performance. Our AV expert Tim LeFevre explains.