Adcom GFA585 buzzing?

Toolfan66
Toolfan66 Posts: 17,366
edited July 2009 in 2 Channel Audio
I noticed when i shut down the amp after a few seconds a buzzing sound comes out of my speakers not loud but noticeable.

Is this ok? I don't have this problem with my emotiva.

Thanks,

Larry.
Post edited by Toolfan66 on
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Comments

  • zarrdoss
    zarrdoss Posts: 2,562
    edited July 2009
    does the buzzing continue or go away?
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  • Systems
    Systems Posts: 14,873
    edited July 2009
    It's not unusual for some amps to emit a noise at turn off or shortly after.The big filter capacitors can still hold a charge ( and will slowly discharge) after shut down.
    Testing
    Testing
    Testing
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  • heiney9
    heiney9 Posts: 25,221
    edited July 2009
    Completely normal for designs (like the Adcom's) that have no muting circuits or protection relay's in the signal path.

    If teh noise bothers you.........turn off the amp first wait until the caps drain (red light will go completely dim) and then turn off the pre.
    "Appreciation of audio is a completely subjective human experience. Measurements can provide a measure of insight, but are no substitute for human judgment. Why are we looking to reduce a subjective experience to objective criteria anyway? The subtleties of music and audio reproduction are for those who appreciate it. Differentiation by numbers is for those who do not".--Nelson Pass Pass Labs XA25 | EE Avant Pre | EE Mini Max Supreme DAC | MIT Shotgun S1 | Pangea AC14SE MKII | Legend L600 | BlueSound Node 3 - Tubes add soul!
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  • Toolfan66
    Toolfan66 Posts: 17,366
    edited July 2009
    Thanks Guys, Thats what i was hoping to hear.
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  • Toolfan66
    Toolfan66 Posts: 17,366
    edited July 2009
    heiney9 wrote: »
    Completely normal for designs (like the Adcom's) that have no muting circuits or protection relay's in the signal path.

    If teh noise bothers you.........turn off the amp first wait until the caps drain (red light will go completely dim) and then turn off the pre.

    Thanks H9,

    This works well.
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