Question about Mackie Thump Series TH-12A 12" Two-Way Compact Powered SR Speaker -
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Posted on Jan 02, 2017
SOURCE: SRM 450 Mackie
1)Clean the heat sinks on the amp on the back of the speaker,
2) carefully remove the amp from the rear of the cabinet and look for 'crispy critters' on the circuit board. If you see 'um, either take the amp to a service center, or go to your dealer and get him to order you a new one.
3) if you're goin' thermal, either get higher powered speakers, or tune it back a bit with these. I have a set that has run years in a dance room with no problems. If you are stretching the system to cover a bigger audience, think about another pair.
Posted on Dec 05, 2008
SOURCE: mackie 450 , crackling even
I think the fault is in the power amp section, since it's not affected by the volume control. If this is a stereo amp and it's accross both channels then it must be a part that is connected to both. Such as a Power Amp IC. However if mono probably a transistor on the heat sink.
Posted on Jul 04, 2011
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