Super Mario Jump Sound

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

Comments

  • ClipdatClipdat Posts: 5,213
    Sounds like typical Adcom power down transients.
    • "Electronic music is human sound adapting to indulge technology, and for some, it feels like the signature sound of energy. New and abstract sounds over hypnotic rhythms can conjure vast soundscapes for escape, pleasure, and transcendence."
  • codycatalistcodycatalist Posts: 1,836
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  • boston1450boston1450 Posts: 5,977
    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 in Maine
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  • Tony MTony M Posts: 6,806
    Here's his I guess;
    Most people just listen to music and watch movies. I EXPERIENCE them.
  • AdamSDCAAdamSDCA Posts: 16
    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!
  • boston1450boston1450 Posts: 5,977
    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 in Maine
    CRS+ TL'd 198 tweets-RTA15 TL'd 198 tweets
    --All TL upgrades by WMG--
    Cs1000p-Yamaha-Parasound
    MIT speaker cables-Pangea powercords
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