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Post subject: electric noise in devile 410 amp,
Posted: Thu Feb 24, 2011 1:53 am
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Joined: Thu Feb 24, 2011 1:49 am
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I have a fender devile 410 amp, connected to the guitar, lately I hear the sound of constant frequency electric pulse of approximately every 0.85 sec
Tests I have made and nothing helped:
1. I changed - a new amplifier, cable, guitar
2. I hooked up the neighbor's electricity
3. I ordered an electrician and inspected the ground and found no problem
4. I added a voltage stabilizer
5. I hooked it to a neighbor and still there was noise
6. I took the amp 20 meters from the house with an extension cord and it did not help
7. when the cable is not connected to the amp - there no noise
• I turned on the amp with the guitar somewhere else and there is no problem (in another place of residence)
I made all attempts I concluded that this noise is received from outside, from something a transmitter, when I stand with the guitar and I turn around there is only two quiet spots 180 degrees away from each other) But I have no idea what that means, I do not know which direction to look for - mobile, a magnetic field ... I do not know who to turn to, if anyone has any idea I would love very much, I can not play please help me ...


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Post subject: Re: electric noise in devile 410 amp,
Posted: Thu Feb 24, 2011 10:55 am
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Joined: Mon Apr 05, 2010 2:37 pm
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Location: Natural Bridge, Virginia
What guitar do you have? If it has regular single coils vice noiseless or humbucking pickups, you are probably hearing the noise generated when a single coil pickup is within the vicinity of an amp. the fact that the noise goes away with the guitar in another room or when you change the direction you are facing would confirm this.

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Post subject: Re: electric noise in devile 410 amp,
Posted: Thu Feb 24, 2011 12:17 pm
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Professional Musician
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Joined: Sun Dec 19, 2010 12:00 pm
Posts: 1389
0,85 sec means a frequency of 1.8Hz. I don't see any equipment at this frequency (exepted two closed frequencies (delta of 1.8Hz) that creates this frequency by superheterodyne frequency down shift ! ).

Another way is a fluctuation of voltage at this frequency, can you mesure the AC voltage on your amp socket ? :)

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Post subject: Re: electric noise in devile 410 amp,
Posted: Sun Mar 06, 2011 6:24 am
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Joined: Thu Feb 24, 2011 1:49 am
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The phenomenon has been resolved, the cause: tv saterlite cable -noise entering the electricity infrastructure
Solution is cable noise reduce device
thank you all


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