I have got a connect amp, pair of Rega RS1 speakers & a velodyne impact micro subwoofer. Speakers are wired into the sub, from the sub to the connect amp. Sub is wired directly to the connect amp. When playing music at a low-medium volume the sub does not sense a signal and work. If I turn the volume right up for a split second and then down again the sub senses a sign and begins to work. I want the the sub to be working no matter what the volume level is. Any ideas?

Thanks,

Rob