Thanks so much to Stanwal and Bdgregory for favoring HighLevel as I have heard that REL recommends it over Low Level input. Thanks especially to Almarg for your detailed analysis of impedance matching. I'm a Cornell EE and get it.
REL subwofer High Level vs Low Level connection
My preamp has two sets of outputs giving me the option of running interconnect to the sub's low level inputs or running the Neutrik-cable from the speaker connectors to the high level inputs. I would think that these are very different solutions electronically and with potentially very different sonic results. Thoughts anyone?