A new ERR RS Commander was on the bench, convenient to test. I connect my bench meter in AC current across a sine wave output Z-4000, connected a speaker, and turned it up to full volume. The prime mover alone pulled around 80-110ma, it danced around a bit as the voltage (and pitch) changed. When I blew the horn, I went around 230-240ma max for the current. It's hard for me to believe the Williams board would draw more, I've seen this ERR board drive two 16 ohm FatBoy speakers to some great volume!
|