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I just biased my BA115. It's super easy. No input signal and disconnect the speaker wire. Measure across the big white ceramic resistor just to the right of the trim pot (R61 if you can see the number under the glue glob) using a multimeter set to "mv". It should read about 5 mv, although anywhere from 4.8 to 5.5 is good. That's it, job done.
Hola, estoy reparando uno igual se escucha como ronco y se calienta la R28 de 3 ohms y las otras 2 resistencias de 330 ohms también. Será que deba ajustar el preset AP1?
Thanks for watching. Drop a comment below if this video was helpful. Please ⭐️ SUBSCRIBE ⭐️ as we are trying to hit 100 subscribers by the end of the month. ✌️ ✌️
Spent hours trying to figure out what was causing this problem. Came across this video, barely turned the bias pot and BAM its fixed. Thank you sir!
I just biased my BA115. It's super easy. No input signal and disconnect the speaker wire. Measure across the big white ceramic resistor just to the right of the trim pot (R61 if you can see the number under the glue glob) using a multimeter set to "mv". It should read about 5 mv, although anywhere from 4.8 to 5.5 is good. That's it, job done.
MILLIONS THANKS!!!! DUDE!! YOU SAVE MY LIFE TO BUY A NEW ONE!!!
No Problem. 🤠
I have one of these Ampeg amps and the buzzing is coming from the tweeter. Was yours buzzing from the speaker?
Thanks a lot friend! That was the reason why my combo played like $h!t. Now it works perfectly again, thanks to your advice!
Hola, estoy reparando uno igual se escucha como ronco y se calienta la R28 de 3 ohms y las otras 2 resistencias de 330 ohms también. Será que deba ajustar el preset AP1?
¿Lo reparaste?
Friend where is her fuse?