Question about Alpine MRV-F345 Car Audio Amplifier

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Alpine Amplifier Cuts in and out on Passenger side while driving

Hello, I have an older Alpine MRV F353 V12 amplifier in my car and when I am driving the passender side (both the front and rear speakers) cuts in and out occasionally. I verified all the connections but vibrations do cause the problem. What would be the problem and is the amp even worth fixing? Thanks

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This isnt a complex problem but both units may need service

Posted on Aug 09, 2007

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Posted on Jan 02, 2017

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The "CUR" display means that the amp is drawing excessive current and the protection circuit is activating. Too low impedance or shorted speakers will cause the amp to draw excessive current.

The Alpine V12 is a Class D mono amp with only one set of speaker outputs. All versions, M301, M501, and M1001 are only stable to 2ohms. Assuming that all 6 of your connected subwoofers and speakers are 4ohm and they're all connected in parallel, the amp sees a .67 ohm load, far below it's rated impedance.

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I'd get a 4-channel amp and drive the 4" speakers off the front channels and the 6X9's off the rear channels. And just power the subs off the V12 making sure that they are connected to show a minimum load of 2ohms.

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