Alpine Amplifier Repair

[@Amplified208]

Nice simple repair. It was nice to see that the problem didn't go back further into the driver stages for the FETS . Great video.

[@Moegneto]

Glad you enjoyed it

[@yarisygatos]

Hi Moe, have a question about a Alpine Mrp-m350 i recently purchased. The lpf knob turns 360 endlessly and has zero effect on the signal frequency. It powers up fine but i have no bass above 50hz. If the lpf pot is damaged, would the amp default to 50hz? Both Gain and Bass eq controls work fine.

[@Moegneto]

The lpf is just a potentiometer. If you open the amp up, it should have a part number that you can look up. You should be able to find the exact part number or match the specifications (just a resistor) and size on mouser, digikey, Newark.

[@c12letmefly]

Friend of mine tell me that if MOSFETs go short,they kill class D driving ic so basicaly it's for the trash.I have one Alpine with shorted feds on output and input.Also melted inductor wires

[@Moegneto]

As you can see in my videos, some damage can be replaced but not all. Have your friend watch my videos.

[@c12letmefly]

I replace the irf3205's and irfb4321 but i get blue light blinking.What can i check next?I have blown output inductor so i solder wire instead

[@anthonybrown6143]

Hey my brother. I have two Alpine 500 watt mono block amps I need fixed. I wanted to know how much you charge to repair amps?

[@Moegneto]

Email me at [e-mail]

[@Luminous.Dynamics]

Are these amplifiers reliable?

[@Moegneto]

Very. Alpine is an excellent and reliable brand

[@kuff-channel3551]

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