Choosing an amplifier for a speaker can feel like a numbers game. One amp says 150 watts, another says 200, and a third claims 300 watts. Then you look at the speaker and see another set of numbers. For the Deaf Bonce AP-M61AC, the important figure is its 180-watt RMS rating per speaker. The pair uses 4-ohm impedance, while the manufacturer lists 360 watts as maximum power. So, how much amplifier power should you actually use? ...