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[quote=St. Anger;678766How i do i tune my amp ?[/QUOTE]

All EQ at flat.

Start with HPF and LPF between 60 and 80Hz. keep gain between 50 and 70% (between 12 oclock and 2 o clock on the knob - I assume this is linear pot with a 270 deg wiper).

Now listen. then tune to taste.