Verified answer

The higher number doesn't mean anything, really. The lower number is what must be payed attention to. For instance, if a speaker is 150 watts peak and 50 watt RMS, take the lower number as that is it's power handling. So, if you had two speakers that were both 50 watts RMS, you'd need an amplifier that would provide around 100 watts of power. But, speakers come in different impedances and voice coil configurations. For example, two speakers that have a dual voice coil configuration and an impedance 4 ohms, you would be able to wire both of them to a 1 ohm load on the amplifier. You can google more about what impedances and voice-coil configurations work with what amps. A good website for example is crutchfield.com.