Aguilar Tone Hammer Internal Trim Pot?

Is the amp working as it should? If so leave it alone and don’t try to fix what ain’t bust!

Be very careful with compressed air. If used carelessly you can blow stuff right off the board.

 

You know what curiosity did don’t you?

 

I wouldn't open any amp unless it's needed. Those amps are the best. I know, I have one. If it doesn't shut off, don't open it.....

 

I'd contact Aguilar and ask. You'd hope it's something interesting, like a mid frequency Q adjustment, but more likely it's something boring like making sure the input gain is consistent for each unit that goes out the door. I'm curious too.

 

I don't have the schematic. Maybe the pot is for setting a bias.

 

'til the experts comes along with the difinitive answer, my WAG is that it's some kind of a bias pot.
Or it may be used to set the amp's overload protection trip point.
In any case, it's not there to dink with.
"No user serviceable parts inside." Ya know?
If they wanted you to turn it they would have put a knob on it and stuck it through the front panel.
But nice that you gently clean the innards regularly.

 

It got me into some "places" drool I probably would not have gotten into without the curiosity. drool

That pot is on the preamp board. Probably not power amp bias related (how are Class D amps biased, anyway?).

 

I do clean the cooling paths of my amplifiers but do it with a vacuum and wearing a face mask. The fans in the amps can suck up all sorts of crud some of which will not be good for you. Blowing it out puts all that stuff back into the air to be taken in by your lungs.

 

So what did the cat want to know????

 

I couldn't see that the pot was in the preamp.

"Biasing" in class D is different, more related to balancing and efficiency.

Even the basics are complicated:
http://www.infineon.com/dgdl/an-1071.pdf?fileId=5546d462533600a40153559538eb0ff1

 

Yeah, without having seen one opened up (or, own one) given how tight that photo, above, this should help.

 

Yes, curiosity pretty much gave birth to all great inventions and discoveries, including music in all it's forms.

 

1) Have a few beers.
2) Turn on amp and start playing.
3) Hand the screwdriver to a buddy....preferably one who has also had a few.
4) Tell him to turn that sucker back and forth so we can all find out what it does.
5) Ignore 1-4..... and that trim pot.

 

Perspective helps but, without a schematic, the function is about as clear as mud.