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Hi Henry, Ultra 5.1 repair customer from Oct 2010. I have a hum that gets louder when increasing volume. I want to use the Ultra with an Onkyo receiver as a home theater. I bought 100uf / 105 deg C caps, but you repaired this system in 2010, so not sure if they're bad. It was unused for 10...

I just installed and tested my amp after Henry returned it. I threw up "Hellion" by Judas Priest, in homage to the killer Honda Odyssey minivan commercial. The loud buzz is gone. The loud pop from power up is gone. The quiet buzz is gone. <thud, thud> "Hello? Is this thing on?" Rest...

I wanted to take a moment to share my recent exchanges with Elliott. I have been wringing my hands over whether or not my sub (an Ultra) had failed. Numerous times over the last couple years, I would get some very loud buzzing feedback, typically after a power failure at our house (unreliable...