Super Mario Jump Sound

AdamSDCA
AdamSDCA Posts: 18
in Vintage Speakers
I have SDA 2B studios powered by an Adcom GFA 555. When I power down the amp, about ten seconds later there’s a little squeal from the right channel that sounds just like Mario jumping. This wasn’t there when the speakers were wired directly to my Yamaha RX-V1800. Any ideas? The DC offset is 7 and 38mV
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Comments

  • Clipdat
    Clipdat Posts: 13,084
    Sounds like typical Adcom power down transients.
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  • codycatalist
    codycatalist Posts: 2,662
    Check out this thread.

    http://forum.polkaudio.com/discussion/182263/my-ge-triton-ones-make-a-few-popping-bass-thuds-after-turning-the-adcom-555ii-off#latest

    It's more of a popping but most likely the same cause.
    Just a dude doing dude-ly things

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  • msg
    msg Posts: 10,450
    And you're not playing Super Mario when this happens, correct?
    I disabled signatures.
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  • boston1450
    boston1450 Posts: 7,758
    Are you turning units On/Off in the correct sequence?.... (Turn On) Preamp/receiver before amplifier.... (Turn Off) amplifier first wait 20-30 seconds for it to completely power down n then turn off the pre/receiver. Just a thought
    Randy-Maine
    2ch-RTA15tl crossover upgrade
    by David WMG
    Yamaha cr1000 cr2040
    HT-Yamaha Parasound Acurus
    MIT BJC Cs1000p Polk Rotation
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  • Tony M
    Tony M Posts: 11,567
    Here's his I guess;
    https://youtu.be/c9Prmp-PB-E
    Most people just listen to music and watch movies. I EXPERIENCE them.

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    --Mark Twain.

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  • AdamSDCA
    AdamSDCA Posts: 18
    Sounds like it’s normal. I’ll try the different power-down orders to minimize but as long as it’s not a symptom of some ominous issue then I won’t worry about it. Thanks!
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  • boston1450
    boston1450 Posts: 7,758
    Ive heard Adcoms do this. My 555 never did & it matched well with sda2bs well. Im no tech. It never hurts to check all connections & clean all cables/wires (we sometimes over look tiny things). I would test amplifier on another & see if it FOLLOWS & then you will know. Sometimes it can be fun to play with audio :) Good luck n report back. Lot of Adcom fans here
    Randy-Maine
    2ch-RTA15tl crossover upgrade
    by David WMG
    Yamaha cr1000 cr2040
    HT-Yamaha Parasound Acurus
    MIT BJC Cs1000p Polk Rotation
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