MA Audio Car Audio & Video - Recent Questions, Troubleshooting & Support

Afraid you may have blown an amplifier. If you have a AC voltmeter, audio generator and schematic, you can feed audio signal into unit and track the signal on both channels during amplification stages.and locate the spot where the amplification stops or one channel deviates from the other. And there is your culprit.

There is little chance that you can do anything about it. The exact voice coil would have to be identified, the old ones taken out, and replacing them is technically difficult/impossible without the proper tools and experience.

If what you're telling me is correct you're trying to drive a stereo sub -woofer with a mono amplifier. If so, that could be a bad situation for the amp, if the voice coils are not wired together correctly. Before we go too far, I have some questions I need answered.
1. Is the MA unit an M1889i?
2. Do you have the 4 terminals of sub-woofer tied together. For example the 2 positive terminals are tied together & the 2 negative terminals are tied together?
3.How do you supply 12VDC to the amp?

While I'm waiting to hear back from you, I'll try to draw a schematic (wiring diagram) of the way it should be wired for your particular setup that I'll send to you.

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