2. amps-preamps
  3. 1070406835

Speaker make "pop" noise when pre amp turn off

Hi,
Does anyone have any idea what cause the speakers to make a "poping" sound when the pre amp is turn off?
Any remedies to this? It sounds fine when all the componet are on. The system does not have a hum problem. This only happen when the pre amp is turn off, or the amp turn off with the pre amp off?
Anyone has any idea?
Thanks.
gengisq
gtan
18 posts
 
Strange. I own an ARC Ref2 MkII but I only hear the 'pop' on the left channel when I turn off the preamp while the amp is on. Not a sound when switching to mute on the preamp. To avoid any kind of pop, I either use the mute switch on my Rowland 8T amp or put the amp on standby mode before switching off the preamp.
jshaw1004
53 posts
 
Gtan: Thanks for your comments. Yes, I am currently using the standby switch of my power amp to avoid having the 'pop' from preamp. Maybe I should ask ARC's support/customer service about my case. BTW, I don't have the problem of turning off the preamp while power amp is on.
bluefin
111 posts
 
The pop could be from preamp or power amp. The cause could be the mismatched of aging tubes/transistors, leakage capacitor, or poor grounding. When I have ARC's LS5/VT100 MKII, I can switch anything off without a pop. Let a good technician check it.
gengisq OP
1 posts
 
Thanks for all for responding. Problem is not noticable any longer after performing the steps decsribed above.
Thanks.
More to discover