Top 20 Mackie SWA1501 Subwoofer Questions & Answers

Hello, I can not say what the direct cause is, perhaps some soldering points on the printed circuit bords are loosen due to thermic stress. test: give mechanical ticks on the woofer while he is playing to check this. Hope you will have succes.

100 kohm

Cotact the manufacturers for local distributors.

There are many possibilities, the switch, motherboard, electronics etc. If you are a DIY kind of person and you want to try trouble shooting yourself, you need tools. Better still, take it to a service person/ outlet to proper checks.

Service manual is available for free from https://www.manualslib.com it contains disassembly instructions. If you change the fuse and it blows again, then your amp will need service.

One major question, about what does aftervtwo minutes the state of your system is( without using music) and is it connected still tight, does yourvamp start working?, thx richard

check to see if your fuse is good usually on the back panelwhatever it takes you have to find out if there fuses good or not

Well , have you checked that it's screwed on tightly , and no other gear is burned, especially your transformer and rectifier or a simple diode. With these things it's not u a huge search way , since it often comes out that your main power supply is broken, even it gives the right output voltages without a load. THE SAME COUNTS FOR OLD CAPACITORS WHEN YOU MEASURE THE WITH A NORMAL LCR METRE, until the load comes on it andvthe speed and capacitance drops like a two sizes two large, frozen underwear.... jHavebyou ever opend one? , you need often to cut a tight wrap, so have a sharp cutter at hand and to avoid damage to the outside of your unit, tape it with papertape, and not the gray strong tape . Unwrap the cables , since theyre often wrapped, to your speakerunit and see what's happening and feel what's getting that hot. But first a look at the unit, since it also can be one capacitor is blown.... take a good look.I searched and searched and after days i say two burned black tiny caps.......

So it's heavy? .... i wanna know exactly what happens . You turn it on and turn on the volume, pls tell mecwhat exactly happens and when with which freq thx rich

Try Parts Express; they have a speaker repair service. http://www.parts-express.com/speakerrepaircenter

AC125V-T6.3A

Yes, with the appropriate replacement driver in size and similar specs regardless of the brand. P-audio drivers worked fine in this unit.

los transistores de salida estan en corto 2sa1943 y 2sc5200 reviisa los drivers tip 122 y los irf

the wires get shaken loose from the constant vibration and you'll need to get a saudering gun and check each connection. especially on the panels.

Start with the woofer speaker, and check with a multimeter.If it is Ok, check/replace the amp module.

Isolate and look for possible shorted components.Isolate the main power transformer from the board, and see if the fuse still blow.If it doesnt , then the rectifier and capacitors to the regulators.But don't forget to check for possible shorted transistor

• Hola, me pueden ayudar
• Aqui esta el manual de servicio de reparacion http://www.mackie.com/pdf/repair/SWA1501%20repair%20guide.pdf
• aqui esta el manual del usuario http://www.mackie.com/pdf/swa1501_om.pdf

• Espero que esto ayude y gracias por usar FixYa

Saludos, Tony

Why it always blew, then you have a short circuit. It is not your fuse is the real problem because it is a guard to your unit. Once there was a short circuit it will blew to avoid further damaged to some parts.
It is commonly due to a shorted parts on the power supply section. You must isolate the shorted parts to back your unit to normal.
If you are not a technician then you must look for a qualified one to trace the shorted parts. This will fix your problem.
Thanks for using fixya.

The cheapest option is to replace the transistors (a quick check on google will tell you how much they are). If they are common transistors you will be able to find them and get them quicker then searching for a board that could be no longer being made.