rwwear: this is what I actually have 'sitting on the shelf', reserved for my 'resurrection project Infinity Quantum 2'. Goal is to tri amp (feed the 2 coils of the Watkins woofer with class D, low/mid class A/B, high/EMIT with tube or class A) using active crossover, for which I bought (never unpacked!) the MiniDSP 2x4HD. No idea how it works, or how to use it as a low path for the Velodyne.