I will be using an Adcom GFA-555 for my DIY sub with a 15" Dayton Mark III, and 3 12" Polk PR's. A GFA-555 put out 850 watts clean bridged. While this may be a bit much, I also have a GFA-585 to drive 2 subs at 400 watts. We'll see what happens in the real world. First passive project besides SDA-SRS's.
Anyone do anything like this?
Any input from users of both type would be appreciated.