Alpine MRD-M300 Car Audio Amplifier
Problem for Alpine MRD-M300 Car Audio Amplifier

Powers up no sound out




By jreinhard623 on Nov 08, 2009

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powers up no sound out

Solution #1

posted on Nov 10, 2009
Not Rated)

etirbynnor

Rank: Guru  Alpine Car Audio & Electronics  Expert
Rating: 94%, 272 votes
Hello jreinhard623,

Check the speakers and wiring by substituting a known good speaker and check the amp inputs and RCA cables. Also make sure that the input gain and other controls are set properly. If there's still no sound, the amp itself is probably defective.
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