I just recently received the Event studio speakers 20/20P powered monitor from someone. I was told there might be an issue with them so I plugged them in to test them. After realizing there might be some issue, I took out the back panel to take a quick look at the speaker wiring. It seems that the previous owner had done some sort of hack job to the speaker cabling: they clipped the HF wire entirely (chanel B's circuit board) and rewired only the LF to both speakers.
I found a blown Cap and replaced it with the exact same rated cap and rewired the LF output to the larger speaker, and the HF to the smaller speaker. Ta-da, it worked.
Then I was shimmying the board back into the cabinet and tried it out again. This time the only sound you could here was some interference at 60Hz - I know this noise very well :0/.
I've gone through and wiggled every wire (with NO power of course) to make sure all solder conections were good. I then turned the speakers on and tested all of the power regulating chips, and they were all working perfect as rated.
The company Event's technical support sent me the wrong schematic when I inquired to them, and they are now ignoring any attempt I make to contact them (to no surprise).
From here, I'm not too sure where to go, for I'm 80% sure that this could be a small fix. I'd rather not just throw these away.
Thanks for any help, let me know If I can provide more info, I'll be close by here.
c5