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Post subject: Supersonic 60 whistling on burn channel
Posted: Fri Jun 10, 2011 5:49 am
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Joined: Fri Jun 10, 2011 5:39 am
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Hello everyone,
I was so happy with this supersonic, but now I've got this sound after few minutes on burn channel. You can, please, check that here :
http://www.youtube.com/watch?v=MazQQ4iYWv8
I tried other instruments, jacks...still the same.
If you have already heard that, tell me the end of the story ! :wink:
Thanks,


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Post subject: Re: Supersonic 60 whistling on burn channel
Posted: Fri Jun 10, 2011 7:05 am
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after a little test :
The bad sound disappear if I reduce a bit the second gain on burn channel. Moreover, if I hit the amp with a finger everywhere, this note appears, it seems to be tubs but I don't know.
Thanks,


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Post subject: Re: Supersonic 60 whistling on burn channel
Posted: Fri Jun 10, 2011 7:13 am
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Joined: Tue Jun 29, 2010 1:20 pm
Posts: 9640
Location: Indiana
Hi jeday,

I suspect a bad preamp tube. If it only occurs on the burn channel, try replacing V3 or V1. It could be any of the preamp tubes, but these two would be the first to try. Check your warranty, maybe return to where purchased for repair. :idea:

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---> "The amp should be SWITCHED OFF AND UNPLUGGED before you do this!" <---

Por favor, disculpe mi español, no se llega a la práctica con mucha frecuencia.


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Post subject: Re: Supersonic 60 whistling on burn channel
Posted: Fri Jun 10, 2011 7:43 am
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Thanks shimmilou,
Tubes are not covered by my warranty...
I will go to a shop, but I wanted some opinion first.
thanks,


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