I think I'd go with option 1 -- put the ICBM between teh SACD player and the receiver to provide you bass management on the 5.1 signal, then put the X-30 between the receiver and sub for control of your Servo15. That way, the X-30' settings will apply to all modes using the sub (including Dolby Digital or DTS soundtracks processed by the receiver).

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gonk -- Saloon Links | Pre/Pro Comparison Chart | 950 Review