How do I calculate the output power when the input voltage is changed? Some kits state ie. 35+\- V to 55+\-V , amp rated at 80W into 8 Ohm. I guess 80w is output with 55V input, how do I calculate W at 35V? 80/55 *35 seems logical? What will happen if input voltage drops below 35V, say 15V ?
