Why do i hear a thud when i shut down the system?

HI, System--audio researh classic 60 and preamp sp15,triangle celius speaker and two vandersteen sub woofers. THANKS.

maxhammer412-21-2011 12:47am

rrog Details Discussions Posts This discussion Message User 1,958 posts 12-21-2011 at 06:34am Copy Comment URL Report Comment Edit Delete I have owned Vandersteen subwoofers with an Audio Research Classic 60 and never had a turn off thump. Amthanh, Vandersteen subwoofers do not connect to the preamp out. They connect to the outputs on the amplifier.