Just a question for sub users without app control and using low level input. Once the crossover, slope, phase, eq etc are set, can a passive preamp with remote be used to adjust the volume? Of course you set the volume a bit higher than what you want on the sub so you can have room on the passive preamp for adding or lowering volume on the sub when needed. This would be placed between the sub and one of the preouts, two for stereo of the int amp or main preamp.
