Great idea on the kits. Looking at the DL1 manual I am confused with the power calculations. Can someone explain why the power formula is not: P = ((V+0.15)/1.414)**2/50 (Vrms**2/R) I always thought that 20v peak (ignoring voltage drop on diode) was equivalent to 4 watts (not 16watts)? What am I missing? mike ko1m