kevinlei324
New member
Would faulty speakers cause a transistor to blow? I noticed some weird things going on with my Emotiva amp going into fault mode when hooked up to these speakers. The amp doesn't go into fault mode when I unplug the speakers.
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- Thread starter kevinlei324
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You could wire the binding posts together and play the amp at maximum level for a year and the amp wouldn't really care. One of the big differences between our amps and just about all others is that they are ridiculously stable.
When I have had this problem in my own gear, it will be either because something is loose or because a lead that I trimmed off a resistor or some other part has not fallen all the way out of the amplifier and has shorted something out. There are also some unfortunate builders (especially lately) who have used plumbers' or jewelers' flux on their kits, and that will definitely take its toll on the solid state parts.
When I have had this problem in my own gear, it will be either because something is loose or because a lead that I trimmed off a resistor or some other part has not fallen all the way out of the amplifier and has shorted something out. There are also some unfortunate builders (especially lately) who have used plumbers' or jewelers' flux on their kits, and that will definitely take its toll on the solid state parts.
kevinlei324
New member
This amp was built before I even played around with silver solder. I used the regular 40/60 solder for this amp.
Should I try to swap out the MJE5731A? I'm looking on Mouser and Digikey, and both sites are saying that the part is obsolete. There's the MJE5731AG. Would one of these work? Or should I swap out the whole C4s board?
Should I try to swap out the MJE5731A? I'm looking on Mouser and Digikey, and both sites are saying that the part is obsolete. There's the MJE5731AG. Would one of these work? Or should I swap out the whole C4s board?
The AG will work.
kevinlei324
New member
I forgot to post an update, but changing the transistor worked great. Speaker and headphone output work fine.
Some additional updates/information regarding my setup... I was using the SEX to power my desktop speakers, the Klipsch Promedia 2.1 system. I attached pictures below to show they're meant to be set up and how I wired them to make them work with a speaker amp.
When I hooked my Emotiva A-100 amp to the speakers, and they worked for a little while, but the fault eventually triggered. Eventually, the Emotiva amp would just go straight into fault mode after being turned on. I reached out to Emotiva, and they sent me a new amp and the SAME THING happened. The amp would work for a bit, then go into fault mode. Eventually, the amp would go straight to fault mode after being turned on.
I ended up buying a new pair of DIY speakers from parts express and have been using the SEX amp with it since and haven't had any issues. Was there something inherently wrong with the way I hooked up the speakers that could have broken 3 speaker amps? Or might there be something wrong with the speakers?
Some additional updates/information regarding my setup... I was using the SEX to power my desktop speakers, the Klipsch Promedia 2.1 system. I attached pictures below to show they're meant to be set up and how I wired them to make them work with a speaker amp.
When I hooked my Emotiva A-100 amp to the speakers, and they worked for a little while, but the fault eventually triggered. Eventually, the Emotiva amp would just go straight into fault mode after being turned on. I reached out to Emotiva, and they sent me a new amp and the SAME THING happened. The amp would work for a bit, then go into fault mode. Eventually, the amp would go straight to fault mode after being turned on.
I ended up buying a new pair of DIY speakers from parts express and have been using the SEX amp with it since and haven't had any issues. Was there something inherently wrong with the way I hooked up the speakers that could have broken 3 speaker amps? Or might there be something wrong with the speakers?
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You can hook pretty much anything you want up to the binding posts of the SEX and not run into problems. The only things I wouldn't recommend hooking up would be something like a car battery, a power cord from the wall, etc.
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