|
|
Post by cedarchoper58 on Jun 30, 2023 16:37:40 GMT -5
My wall voltage ranges from 126 VAC down to 118 VAC. this seems extreme and my amp sounds totaly different day to day because of it. Any one else fluctuat this much
|
|
|
|
Post by LTB on Jun 30, 2023 18:03:17 GMT -5
Does the wall outlet hold the plug from the amp tightly. If not then replace it before you do anything else (kill circuit breaker first). If the outlet is tight then kill breaker and check to insure the wiring is tight on the outlet. If this is ok then You need to measure it at the service entrance (wires that feed the breakers from the outside). If it looks normal then measure it on the output of the circuit breaker for that circuit for voltage drops. If you have voltage drop the replace the circuit breaker. Another thought, do you have copper or aluminum wiring? Hopefully copper. Aluminum has been outlawed since the mid 70’s and contribute to fires.
|
|
|
|
Post by cedarchoper58 on Jun 30, 2023 18:25:15 GMT -5
its a farley new home and all is good with wires and conections. bad connection would explain low but not 126VAC
|
|
|
|
Post by LTB on Jun 30, 2023 18:28:26 GMT -5
its a farley new home and all is good with wires and conections. bad connection would explain low but not 126VAC You need to check circuit breaker box when the voltage is low. It may be issue outside your home. |
|
|
|
Post by LTB on Jun 30, 2023 18:48:40 GMT -5
I suggest when you do check the voltage coming into the circuit breaker box take a photo of your meter reading to give to the electric company as proof.
|
|
DrKev
Wholenote
It's just a guitar, it's not rocket science.
Posts: 418
|
Post by DrKev on Jul 1, 2023 13:22:34 GMT -5
I suggest when you do check the voltage coming into the circuit breaker box take a photo of your meter reading to give to the electric company as proof. I don't think they'll do anything. The national standard is 120V +/- 5%, i.e. 114V to 126V, he's within spec. |
|
|
|
Post by LTB on Jul 1, 2023 23:27:01 GMT -5
|
|
|
|
Post by Leftee on Jul 2, 2023 5:37:44 GMT -5
It really depends where you live - how stable you wall voltage is. Around here we stay at 120vac.
|
|
pdf64
Wholenote
Posts: 557
|
Post by pdf64 on Jul 2, 2023 13:27:00 GMT -5
… True if you raise voltage above what is coming out of the wall the Current will go down … I recall the OP has a vintage Fender amp, intended for a 117V AC mains feed. With the simple linear power supplies and loads that are a valve guitar amp, Ohm’s law applies, I=V/R, so as voltage goes up, current goes up. It’s a different story for switched mode stuff. |
|
|
|
Post by LTB on Jul 2, 2023 15:17:46 GMT -5
… True if you raise voltage above what is coming out of the wall the Current will go down … I recall the OP has a vintage Fender amp, intended for a 117V AC mains feed. With the simple linear power supplies and loads that are a valve guitar amp, Ohm’s law applies, I=V/R, so as voltage goes up, current goes up. It’s a different story for switched mode stuff. I was speaking of the autotransformer for adjusting voltage to feed the amp that I posted a link too. If say he had 118volts coming out of the wall outlet and you raise the autotransformer to 126 volts that in itself will not be able to deliver the 20amps it is rated for. I was stating if an amp pulled 2 amps it should be able to handle that at least allowing for 126 volts A/C. Sorry I was not clear about this. |
|
pdf64
Wholenote
Posts: 557
|
Post by pdf64 on Jul 2, 2023 15:43:15 GMT -5
Ahh, I get what you mean now, thanks for the clarification  |
|
|
|
Post by pcalu on Jul 2, 2023 18:51:13 GMT -5
My wall voltage ranges from 126 VAC down to 118 VAC. this seems extreme and my amp sounds totaly different day to day because of it. Any one else fluctuat this much Yes sir been experience just that in the Midwest... for a couple of months now. Is it attributed to all the Green New Deal BS  IDK I broke out the variac because of it I |
|
|
|
Post by Mike the marksman on Jul 3, 2023 11:10:50 GMT -5
Is it every outlet or just the one? Is there a refrigerator on the same circuit?
That's the problem I was having. I'd be playing, and the volume from the amp would get quieter, then louder. Turns out the outlet my amp was plugged into is on the same circuit as my garage refrigerator, and every time the compressor kicked on the amp would suddenly sound bad.
|
|
IDK 