Hi I have the f500/2 and two hifonics zeus woofer 600W 4 ohm how should I now connect the 1 woofer pro channel or both woofer an +von ch1 and – from ch2 or any other ??? On 1 ohn I don’t come or? Variant 1 Sufe plays sabiel at load so around 12,1 volt Variant 2 Sufe breaks in and current at 10 volts How is it right now?