On 2 Jan 2007 17:39:42 -0800, "max graff" wrote:

Hi guys,

I am a newbie turntable user and have a question for you.

Each time I start or stop my turn table mechanics with my amp still
powered on I see my woofers giving a low frequency boom. This is guess
is the sound picked up by the tone arm etc.

Just speculating, but I would check whether any interference
suppression components across the switch or the motor are damaged.
(This is assuming a mains-operated motor.)

The usual warnings and disclaimers about opening mains operated
equipment apply. If you are in any way unsure, leave well alone!

--
Chris Isbell
Southampton, UK