tksteingraber: I biamp my speakers as well but haven't installed a slug in the bass amp (D-Sonic) as I've had it go into protection mode a few times without really being pushed so not sure what's going on but don't want to take a chance. What are you hearing with your subs with the silver slugs in place? And please let us know how the Swiss fusebox compares to the slugs direct.
And I'm having trouble getting the correct molybdenum rod. I accidentally order 3/8" rather than 3/16" and then the seller sent out a replacement after I shipped the 3/8" back. That arrived today and it's obviously smaller than 3/16" so.... we'll see.