2. amps-preamps
  3. 169770-151983

Power Down Sequence for Amp / TT to Avoid Speaker Pop

Hello!  I have Rogue Audio Sphinx v3 and Rega P3 TT and Zu Audio Omen's. When I go to flip record side or change to another record, I turn off the TT (while the amp is ON) and I hear an audible pop from the speakers. 

I've heard you should avoid this pop (to protect the speakers), but this would mean I would have turn the amp OFF and then back ON whenever I change the record which would be a pain. Turning the TT OFF is the only way to stop the platter. And, Rogue advises not rapidly turning the amp OFF and ON to avoid "transient noises". 

What do others do here? Is the pop something to really be worried about and worth this power off / on sequence? I might be missing something as well.
nickamland
nickamland OP
11 posts
 
@arcticdeth - Rogue's user manual says the opposite for Power On. 1) Turn on all sources, 2) power up Sphinx, 3) select listening source and play.  Then, they state the reverse for Power Down. Your sequence for me led to the pop when turning off the TT.

@holmz - I still hear the pop when I turn the volume knob all the way down - though I didn't hit use the MUTE button on the remote control.
yogiboy's avatar
yogiboy
5,850 posts
 
@ millercarbon has told you what to do. Just switch to another source. No reason to shut anything off! I had the same problem and it was a bad capacitor on the on and off switch on my turntable!
fiesta75
1,378 posts
 
Yes, check or replace capacitor across TT on/off switch. And you are right; Amps on last and off first. 
holmz's avatar
holmz
2,328 posts
 
Yes, check or replace capacitor across TT on/off switch. And you are right; Amps on last and off first.
Ah or maybe a flyback diode if it is back EMF?
We have always done:

 AMPS: on first, off last.
t startup I do:
  1. Preamp on first, with its mute button in from when I urned it off.
  2. Then amplifier on.
  3. he preamp mute disabled.

At shut down:
  1. Preamp mute
  2. Amplifier off
  3. Preamp off
kennyc
1,883 posts
 
as far as what to touch for grounding, something organic is best. i touch a wood shelf on my rack.
Shouldn’t one touch something metal that’s connected to the ground to dissipate static electricity, but wood is a poor conductor- am I missing something?
More to discover