Question about Marantz Audio & Video Receivers

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One speaker channel is crackly.

Audio on front left speaker is very crackly with reduced sound output. Have fault found speakers and cables, fault is definitely the SR7300 Amp. A couple of techo taps on top of unit fixes the fault temporarily.

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  • cnkdaw Jan 01, 2009

    Using banana plugs/wire direct to the speakers.

    If I use the B speakers, same thing; left channel is crackly.

  • cnkdaw Jan 01, 2009

    All the terminals are clean and in tact. No dry joints visual. What I need is a circuit diagram to see where the signal for the two 'Front Left' channels come from.

  • Travis Humphries
    Travis Humphries May 11, 2010

    Are you using RCA Cables or Direct Wire to the Speakers?

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There is Definately a Short in the Amp if tapping Fixes it. Could try opening the amp and Inspecting the Back side of the Terminals. You can use a Voltometer and check the Wiring inside. Turn off Power Before doing this!

Posted on Jan 01, 2009

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