It takes the subwoofers in a Model 5 or 5A about 4 hours to rise to the midpoint of their excursion. They will play prior to that, but you want to keep the levels relatively low until they are ready.
You must have a verified phone number and physical address in order to post in the Audiogon Forums. Please return to Audiogon.com and complete this step. If you have any questions please contact Support.