Weird intermittent interference sound

howzz1854 · 2040

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Offline howzz1854

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on: November 17, 2014, 08:48:39 AM
hey guys, so i finally got my crack back, after PB awesomely took a crack at it. long story short, now it's finally up and running, although not without some hiccup (the headphone socket was a bit bigger than normal, as a result, my plug wasn't getting both channels out correctly, but i fixed it by bending one of the three headphone socket prongs).

i've noticed, sometimes, i would get interference sound coming out of the left channel. and it doesn't seem like it's cable related. because it doesn't matter if i turn the volume knob up or down, the interference sound does not change or go away. it comes and goes. when it's not there, the amp is totally silent, but when it's there, it sounds like an out of tune AM radio that doesn't have its channel spot on, the snowy effect sound (if that makes sense). and the weird thing is, the AM like interference sound only comes out of the left channel, the right channel is completely fine.

is this something with my amp? or is this something to do with outside RF interference?
« Last Edit: November 17, 2014, 08:50:45 AM by howzz1854 »

Xonar Essence STX >> Schiit Bifrost >> Bottlehead Crack (TS 7236/RCA 5963) >> HD800s


Offline fullheadofnothing

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Reply #1 on: November 17, 2014, 09:00:39 AM
This is most likely interference from either a cell phone or a wifi router. The intermittent-ness suggests cell phone.

Joshua Harris

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Offline howzz1854

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Reply #2 on: November 17, 2014, 10:32:45 AM
This is most likely interference from either a cell phone or a wifi router. The intermittent-ness suggests cell phone.

thanks for the response Fullheadofnothing.

but do you think it's weird that it only does it on the left side? the right side doesn't seem to be affected.  :o

Xonar Essence STX >> Schiit Bifrost >> Bottlehead Crack (TS 7236/RCA 5963) >> HD800s


Offline Paul Joppa

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Reply #3 on: November 17, 2014, 02:54:58 PM
I'd call it unusual but not implausible.

Paul Joppa


Offline howzz1854

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Reply #4 on: November 18, 2014, 09:51:05 AM
you're probably right. last night it was doing it, and up until 12am i put on the headphone again and it was gone completely. the amp was on pretty much last night from when i got home until when i went to bed at 1am.

it's just so strange that it's only the left channel. oh well....

Xonar Essence STX >> Schiit Bifrost >> Bottlehead Crack (TS 7236/RCA 5963) >> HD800s


Offline Grainger49

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Reply #5 on: November 18, 2014, 11:16:35 AM
If you had a cell phone and computer near when you had the interference you should reintroduce the cell, then the computer.  Find which one is causing it.  Once armed with this knowledge you know what to do.