I had a great visit with AN member bmr3hc today. He has a new set of Quad 2805s, Music Reference RM9, AMR DAC, Wadia transport, REL 8" sub, GIK treatments, JPS cables, and a huge CD collection.
We fiddled and messed with the sub in a bunch of different locations, changed the settings. Finally ended up exactly the same as he had it set up, but just turned way down, from 12 oclock all the way down to a couple clicks above zero. The room is small and it didn't take much to flesh out the very bottom. Quads go pretty low, so crossover knob was all the way down at 30. Henry was amazed how it changed just by turning down the sub. He had already done a good job setting crossover and phase, and positioning it acoustically.
The Quads never cease to amaze me. With a great tube amp they are very special. It's always a privilege to hear them setup well, with good electronics. Thanks for the invite Henry!