I have just taken delivery of an SVS 25-31PC+, which I am very pleased with. I have yet to calibrate it fully and the quantity of bass makes me fearful that the room is resonating badly but it it still sounds great , much better than my old M&K V-125. My question to other SVS users is, "Does the auto-on switch work?" A friend of mine has a Monitor Audio sub with the same feature and he finds that the sub switches off during movies and when the LFE are required it starts up but a little too late. The reaction time means that the sub is not firing when it should, which is obviously no good at all. Do the SVS subs suffer from this problem or do you find that they remain on throughout a movie waiting for a chance to show their mettle?