Question about Mackie SWA1801 Subwoofer

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No sound there is no sound coming out of my mackie 1801 sub. everything seems to be fine, the signal light blinks when i send sound through it. i have a mackie 1530 3-way connected to the sub and i get sound coming out of the 3-way but no sound out of the sub. could the problem be a bad fuse?

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Hi my name is MIchael and I repair the following amps JBL PB10, PB12, TSS-1100, TSS-1200,PS12, PS12, E250P, SUB12 Venue. If it has the screw near the on/off switch. If your amp is blowing the fuse, has bad sound, no sound, doesn't power up or if the output is low or muffled. We can fix it - please check ebay and search WE REPAIR PB10 PB12 - you will find us ... Edwards Electronics ....

Posted on May 24, 2012

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Willing to bet you've blown the amp, or fused the coil. I've had it happen twice, apparently when running off a power source that apparently couldn't handle the load. Hope it's under warranty - if so Loud Technologies (deals with all Mackies warranty stuff) should be able to replace the unit. Otherwise, you'll need to take it in to a service department and have it checked out.

Good luck, you'll have to arm wrestle with them to get them to replace it.

Posted on Jul 29, 2008


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These subs are renowned for problems. The PSU and the output stages as well as the main driver are all weak and there are a number of companies that will upgrade them and sort out other issues such as vibrations. Assuming it is out of warranty and you really want to use this you would be best going to a specialist repairer to get it sorted not Mackie.

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Speaker is receiving a signal but no sound is coming out.If you press the back it comes back for a minute but it is not continuous.The speaker sounds fine when it does come back on.

Zombie post, I know... But, I have a solution for this. Remove the power amp unit from the rear of the sub cabinet. Remove the sheetmetal shield, noting the 4 allen screws on the side. Th daughterboard that the 4 screws thread into is a filter for the power amp's output, and is the last circuit that the powered signal goes through before hitting the speaker. If you inspect the solder joints, you will likely find that there are several which are bad. they will look cracked, potentially discolored in the crack. Resolder the joints, making sure to use good solder, and fill the joint. The most likely culprits are the 4 joints belonging to the 2 blade connectors which attach the daughter board to the larger board (which is the actual amplifier component).
Again, sorry for digging this problem up from the grave, but when I searched for a solution earlier, this was one of the only posts that resembled my issues, and it never got a good solution.

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Likely the amp blew and the power supply is being overloaded and keeps trying to power on but finds an overload and continues as the power goes away. This is NOT a DIY unless your are electronically adept.

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The amp is likely blown. This is not DIY unless you are competent at electronics.

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Swa 1801 mackie blown capacitor

Took alot of finding but you can get them from Digi-key

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