Question about Pyramid PB448 Car Audio Amplifier

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Nobs and switches

There are no labels on the nobs and switches on the amp so i dont know what im messing with to set the amp. what do each of the nobs and switches do?

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I couldn't find any online information. I checked with pyramid. This was their response:

The owners manual is free of charge please send us a request along with a self addressed stamped envelope to the address below:
Pyramid Service Center
1600 63rd Street
Brooklyn, NY 11204

Posted on Nov 05, 2007

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Hi Lexex

Well it sound like the know what is the problem, very common on yamaha , second class unit's, mind there better then other brand that I've seen and I do prefer yamaha, I feel they take more pride in there consumer products then others big brand.
There not easy to change, you can call yamaha and order the control first to see what it looks like then know how to attack it. Some of the model they will ship the complet board you won't know until you get it.
Keep in mind there very hard to reach, you will have to take the top off, buttom off and then the intired front off just to reach the control and then replace it, I have tried to clean them but they dont' last or they cause the contract to fall apport depending on the material they used and what type of contact cleaner you have used, some or plastic frendly.... this is the one you need, you can also use brake cleaner, I find better, but they don't lubricate like contact cleaner witch has silicon lubrication in them.

I hope this help

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