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Should MLs make a "noise" when switching off?

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Stereonerd

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As a first-time owner of a pair of MLs that have bass amps (my previous MLs have been entry-level) I've noticed that when they "switch off" after five minutes of inactivity there's a crunchy noise as they turn off. Are they supposed to do this, or is the operation usually silent?
 

twich54

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crunchy eh, like potato chips ? :eek:

only kidding, yes a slight 'crunch' is completely normal !
 

BDH55

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Hmmmm, guess I'm glad to know this! I've never heard it, but guess that's cuz when I shut things down I leave the room... :unsure:
 

twich54

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I remember my Spires sounding like a slight thump / crackle, same thing happens with my Velodyne DD15 sub
 

roberto

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As a first-time owner of a pair of MLs that have bass amps (my previous MLs have been entry-level) I've noticed that when they "switch off" after five minutes of inactivity there's a crunchy noise as they turn off. Are they supposed to do this, or is the operation usually silent?
It is a normal behaviour of a power amp when the caps of the power supply are discharged. This odd noise does not affect any component of the system or speakers.
Happy listening!
 
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