Question about Mission 700 Main / Stereo Speaker

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Blown fuse in mission 700as subwoofer

I keep blowing the fuse when a signal is sent to my mission 700as subwoofer. Any ideas what to look for or to do?

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  • terry994 Jul 26, 2009

    The subwoofer has worked for several years. It is now blowing fuses everytime a signal is sent to it. The last solution from sob_3 seems to think that I am talking about two speakers. The impedence could be the problem but the impedence was fine for several years. Now it has changed? Is there anything else inside the subwoofer that I can check/fix before taking it to a repair shop?

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  • 10 Answers

If you have access to a multimeter, you should test you impedance (ohms) Ω, check to make sure the speakers reads higher than the amplifier needs; this will result in less strain on your amp and diminishement of sound...For example: if you connect two 4Ω
speakers in series it results an 8Ω circuit (least strain). and if you'd take the same two speakers and connect them in parralelle it would result in a 2Ω circuit (most strain).

Posted on Jul 24, 2009

  • sob_3 Jul 31, 2009

    from my research, (most common probleme with this model) this could be a faulty relay (instead of kicking in the next power phase, the relay probably has no contacts left to it or somehow became sticky [wrong type of lube or none] and blows the fuse....)



    I can't be sure on that... I'll keep researching...

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