Question about Mackie SWA1801 Subwoofer
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Posted on Jan 02, 2017
It sounds like the thermostat didn't shut the speakers down before they were damaged. There is probably a very fine wire leading to the speaker coils which is burned/broken. Fixing this broken connection my solve the problem unless the coil itself is damaged.
Another possibility is that the crossover circuitry in the speaker cabinet is damaged from overheating.
Sounds like you need a service tech to look at the bad speaker, unless you want to tackle the job.
Posted on Apr 22, 2009
The Mackie SWA 1501 subwoofer is one on the best subwoofers but it's a heavy one. I have it since 2007 and have no problems with it, still working. I would recommend to buy the new SWA 2801z. If you're in germany check this site: Mackie Subwoofer in Cologne
Posted on Dec 20, 2009
make sure its plugged into a large circuit over 30AMP! Turn down the gain on the back. They can't take too much punishment so turn the bass down on the eq. Get a stronger sub
Posted on Aug 02, 2010
SOURCE: mackie swa 1801 power amp
You likely have other parts blown as well, but Q3 (MJE15033) AND/OR r8 (1 OHM/0.5 Watt) are blown. I suspect that Q3 has a base-collector short and you will find several of the output transistors are fried as well Q4, Q5, Q15, Q16. I suspect that the Zeners D14, D25 may be blown.
When restarting this, put a 100 Watt lampin series with teh 120 volt power to limit current and avoid destroying freshly repaired parts due to a few bad ones not found.
Posted on Aug 11, 2010
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