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Subwoofer not making any sound and a red light is showing up on the amp labelled prot. its a jucie amp JA490. Whats the problem???

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Hi nexanutter,

On almost any amp, they go into protected mode when they have detected a short somewhere. When a speaker is involved, it usually means that the "+" wire and the "-" wire are touching somewhere between where they are connected at the amp and where they are connected at the speaker. This can also mean that the wire might be cut or pinched somewhere along the way, like by a piece of furniture or when the wire is pushed under a piece of moulding to be hidden. Often, it can be a single strand of one wire touching the connector of the other wire at the "lug" or connecting point.

The easiest way to test for shorts is to disconnect all your current speaker wire, then run a new set of "test wires" (you can move the speaker close to the amp or do whatever you need to do to make it easy for you to get to both sets of connectors. Since this isn't permanent, it doesn't need to be pretty, but make sure that no part of the "+" wire touches the "-" wire, especially where the wires connect.

Good luck, and I hope this is helpful. Please let me know how this works, and if you feel it is appropriate, I would appreciate you posting a rating for me.

Bob

Posted on Oct 16, 2008

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