What does 400 RMS mean?

What does 400 RMS mean?

The “Nominal” or “RMS” (root-mean-square) rating is the amount of power that can be applied to the speaker under normal circumstances. For example: if your speakers are rated to handle 50 watts RMS each, then select an amplifier that will deliver approximately 50 watts RMS to each speaker.

How many watts is 700 RMS?

700 watts RMS is probably more like 450 watts steady.

What does a capacitor do for an amp?

Capacitors store electricity as instant power available for your amplifier. If the amplifier draws more current than is available from the electrical system directly, the capacitor covers the difference up to its stored capacity. The battery is not overloaded and the car voltage remains steady.