Skerdi, again there is no receiver sub crossover setting on the 804 when the "full range" setting is used. My suggestion is to disregard that REL suggestion and use the setup that nearly all sub makers consider to be the preferred method. Use the sub out from your 804 into the low level input of the Q150(use position 2 of Q150 mode switch). This bypasses its internal crossover network and uses the 804 crossovers, which can be set to appropriate values, and rolls off the REL output with precision, while relieving the M60s of having to carry the "full range".
