Need help with Z1 stereo setup and speaker additions

[chpthril]

This is why stereo should be left to the pros (like chpthril). My bad on power from the Syn6 channel 5/6 bridge to the sub. Thanks for catching my error Chpthril.

Your 155W is correct for a single 4 ohm speaker per chnl on 5 or 6. If his XS-10fa is the 4 ohm DVC, then 300 is spot on for it. A little more would not make a difference and a lot more will drive it into thermal. your specs for the hi-pass chnls is also correct.