Just did sound check and my amp is really noisy

[Inder_Cine_Mann]

Re: Just did sound check and my amp is really noisy

+1

That was definitely not the case. Straight into the wall.

Could be a power influx, but I only know about electricity from doing film lighting.

I honestly don't have knowledge on how unregular voltage can **** with an amp.

 

[Top-L]

Re: Just did sound check and my amp is really noisy

Thanks for sharing this recommendation. Need one to handle a full band for outdoor concert and we're set. Thanks again!

1000Watts might be enough if you arent running the PA.

 

[zzmoore]

Re: Just did sound check and my amp is really noisy

How many watts is your Avatar...maybe 100.?
It probably says on the back panel.

 

[Inder_Cine_Mann]

Re: Just did sound check and my amp is really noisy

How many watts is your Avatar...maybe 100.?
It probably says on the back panel.

It's the 18w model

 

[zzmoore]

Re: Just did sound check and my amp is really noisy

Sorry.....my mistake.....I was referring to power consumption.

 

[Inder_Cine_Mann]

Re: Just did sound check and my amp is really noisy

Sorry.....my mistake.....I was referring to power consumption.

Ah yes. I don't remember. When I head back home I will check.

 

[Inder_Cine_Mann]

Re: Just did sound check and my amp is really noisy

Is that 'high gain amp noise' a whistle or feedback of some sort? That combined with the 'dusty' sound you describe could indicate a microphonic preamp tube. Take the back panel off of the amp and tap on your preamp tubes with a pencil or similar. You may hear a faint click if the tubes are working properly, whereas a microphonic tube will produce much louder noise.

Do I do this just when my guitar is plugged in? In On mode?

 

[dystrust]

Re: Just did sound check and my amp is really noisy

Do I do this just when my guitar is plugged in? In On mode?

You don't need to have your guitar plugged in, but the amp needs to be operating. You may want to let it warm up for several minutes to be sure the tubes are sufficiently warm before taking it off standby.

 

[Inder_Cine_Mann]

Re: Just did sound check and my amp is really noisy

You don't need to have your guitar plugged in, but the amp needs to be operating. You may want to let it warm up for several minutes to be sure the tubes are sufficiently warm before taking it off standby.

Thank you

 

[zzmoore]

Re: Just did sound check and my amp is really noisy

In the end...tapping on tubes (which is not good for them anyway) does not tell you much. It might identify a tube that is Very Microphonic.
But do not let tapping be your acid test.
The only way to know if a tube is bad in an amp you are playing, is to pull said tube, and install a replacement.
You can even switch a tube that is "bad" in V1, and have success with it in another slot.
I always thought that was inviting future problems.....but whatever.
good luck

 

[Inder_Cine_Mann]

Re: Just did sound check and my amp is really noisy

In the end...tapping on tubes (which is not good for them anyway) does not tell you much. It might identify a tube that is Very Microphonic.
But do not let tapping be your acid test.
The only way to know if a tube is bad in an amp you are playing, is to pull said tube, and install a replacement.
You can even switch a tube that is "bad" in V1, and have success with it in another slot.
I always thought that was inviting future problems.....but whatever.
good luck

So that being said, it could be more of an amp problem than tube problem ya?

 

[zzmoore]

Re: Just did sound check and my amp is really noisy

.
What I am saying is...tapping is NOT definitive.
The only way to know if you have a tube problem is to change the tube, and install a tube that you KNOW is good...or install enough new tubes to make a bad tube among them unlikely.
Tapping only reveals a tube that is bad while being tapped. It can pass that "test", and still be causing you problems while you play.
best

 

[Inder_Cine_Mann]

Re: Just did sound check and my amp is really noisy

.
What I am saying is...tapping is NOT definitive.
The only way to know if you have a tube problem is to change the tube, and install a tube that you KNOW is good...or install enough new tubes to make a bad tube among them unlikely.
Tapping only reveals a tube that is bad while being tapped. It can pass that "test", and still be causing you problems while you play.
best

Makes sense. Thanks man