Took some REW measurements last night. My Sierra-2EX's with V2 upgrade, crossed at 80hz to my dual Rythmik F12's. I took Left speaker only W/subs, Right W/subs, and combined. There is no EQ from 80hz and up. The subs are running from a MiniDSP 2x4HD. I recently switched from a Schiit Bifrost 2 DAC to just using the DAC in the Parasound P6. I also recently added a Auralex SubDude II under one sub, and SVS Soundpath isolation footers under the other sub, so the original sub EQ/correction in the MiniDSP probably needs to be redone as is evident by the apparent drop off down low. However, the bass loads the room so well it still sounds fantastic. Those NFS optimized Sierra-2EX V2 crossovers sure look nice!
Ed
* Sierra-2EX's W/V2 crossover upgrade
* (2) Rythmik F12's
* Parasound Halo P6
* Audio by Van Alstine DVA-M225 Monoblock Amps
* MiniDSP 2x4HD For Sub calibration
*World's Best Cables Canare 4S11 speaker cables