Just curious people, how do i personal measure my speaker system's RMS wattage?

Normally you could read the specs on your speakers, or check their website for technical specifications or consumer help.

Electronic techs use expensive test equipment, like a True RMS AC Power Line Analyzer, for accurate measurements.
You could try hooking a voltmeter to your speaker leads when you play your amplifier.
Using the formula, (V^2)/R voltage times voltage divided by impedance. Be careful you don't explode each satellite & blow a hole in the floor!

Wattage, the power a system draws, can be measured three ways:
* RMS (Root-Mean Squared)
* RMS Maximum - The maximum power a system can reliably handle in bursts.
* PMPO - the maximum output, Peak Maximum Power Output

How about an ammeter to measure the current?

Impedance = V/I