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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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RCF/Mackie ART speaker series question
Hi all,
I'm much involved with pro audio repairs like active speakers and such. I've had quite a few of those classic RCF (today Mackie) active speakers, model ART300A with blown speaker elements. Some collegues of mine also have this experience. It seems like the built-in amplifier module has the power of blowing the speaker! It also includes a limiter which will avoid heavy clipping, so I don't think clipping is the problem either, (as long as it limits). Recently, I had an ART300A with a blown low-freq. element, the amp was still intact, hook up a dummy speaker across the output and amplifier performs as expected. No DC or any high frequency oscillation. Replaced the original speaker element and the thing was completely ok again. Does anyone have any valueable information regarding this matter? What's going on inside those ART active speakers, really?? Best regards Stefan |
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