Help ! My Cornwall’s puked out it’s Crossovers 
I finally took the time to separate out the Crossover’s in my CW IV’s. Last year with two jobs on the go, Florida Audio Expo (FLAX) plus other stuff going on, there wasn’t enough time quite honestly. I just swapped put the parts and tacked everything together on the original Xover PCB. My intent was to not touch the original PCB and break everything out externally and Biamp the Tweeter & Midrange with the Black Ice Audio F100’s and run just the Woofer with an Orchard Audio Ultra Amp module.
Well I had some time last week and built up some Fugly looking but functional Xover filter boxes. I’m shocked at how directly soldering all the L, C, & R components together instead of relying on PCB traces to carry the signal (in addition to all the ArgentPur Speaker Cables) made these Speakers jump to life once again. Now I know you can “tune” PCB traces via PSpice models and such (I have no experience in it, but I’ve had Engineers explain and show me in great detail how it’s done in the Microwave World).
The Black Ice Audio F100 Amps have this neat little feature that Jim Fosgate added that allows you to safely Bridge amplifier pairs, triplets, quadruplets, quintuplets, and as many Amps as you can afford together without moving the Speaker Cables. You just go “Bridge” XLR Out to “Bridge” "XLR In " in of the next F100 Amp in the line and you’ve effectively doubled the output power on that channel.
Well, I didn’t quite do that but having the Amp schematic (under NDA of course), i looked at how he’d done this bridging circuit. Turns, out it’s all done at the line level so you can simply XLR “into” another Amplifier BUT if it’s not an identical F100, don’t expect this doubling of power at your Speakers terminals. It does however act like a buffered Pre-Out so I won’t need XLR splitters or a a Tube Preamp with multiple variable XLR Out’s like my ex BAT VK50SE had.
Wife’s not Happy and so far the “Bad Dog” hasn’t gone near them ! Cause if he does, he won’t be a “Bad Dog” no more. not 
I’m done !!! Audiophile Nirvanna achieved (for me anyways).
HPF
LPF, BPF, & HPF (covered up)
Left Channel - Using the solid Silver Wired ArgentPur Amplifiers with Orchard Audio Ultra Modules for the Woofers/Black Ice Amps with KT170’s for the Mids & High’s
Right Channel - Again, I’m using the solid Silver Wired ArgentPur Amplifiers with Orchard Audio Ultra Modules for the Woofers/Black Ice Amps with KT170’s for the Mids & High’s
Four Peaks Kilt Lifter Scottish Ale is brand of choice since moving to Phoenix. In Canada, my go to was Rykard’s Red Scottish Ale.
Oh…and a “shout out” to “Uncle Pauly’s” The Audiophile’s Guide: The Stereo SACD. Stupid me had the Woofer on the right channel connected backwards on the actual Woofer terminals and after some cursing & swearing at myself. All is now good in the World !