I couldn't find a US message board geared specifically for REL sub owners so I'm posting my question here. I currently use the equivalent US model of UK's Quake, the Q108 (only avaialble in silver and black). They are certain differences in the controls. It could be just the labeling but the control functions are the same. I would just like to confirm them. Below are the controls for the Quake: 1. UK DEPTH/SLAM CONTOUR switch is ~ to the US 0/180 PHASE switch 2. UK ROLLOFF is ~ to the US CROSS OVER control 3. UK MODE is ~ to the US IN/OUT XOVER????? 4. HI LEVEL (same for both UK & US) 5. LO LEVEL (same for both UK & US) The third item is where I'm confused because UK's MODE control has 4 selections whereas US's IN/OUT XOVER control only has two (IN or OUT). Can someone enlighten me on this? Thanks. Anyone has a similar setup as mine? REL with B&W and and Marantz SR-19THX Select receiver.