Chad,
From what I see in the manual, it says 1-6 watts input for 70-100 watts output.
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My experience with various TPL amps is that a little less drive is better than over driving them.
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It looks like the label on yours doesn't quite match this copy of the manual. That is not all that uncommon.
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I would start at 3 watts and work your way up. If you get to full output, that's where I would stop at with drive level.
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As was mentioned in a earlier post if you delete the pre-driver board your amplifier becomes a PA6-1BE and requires 10-15 watts drive for the 70-100 watts output.
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Joe - WA7JAW
