james633
"...Do you think he subwoofer settings will need to be adjusted for each amplifier?..."Wattage has nothing to do with it. What matters is the amplifiers' gain. If the two are different, you'll need to reduce the level on the one with higher gain if you want to maintain proper balance. That's one of the common functions of an active crossover.
If they are truly the same wattage they will not really need adjusted.