Hi all,

I currently have a pair of Event TR-6 bi-amped monitors and I am having a problem with one of them. As soon as I power the unit on, I hear a loud fuzz/static sound coming from both speakers. It does appear that the fuzz is louder from the tweeter, but that could be due to the nature of the fuzz (i.e. not much low freq. stuff).

When I run an audio signal to the unit at a normal level, if I listen closely (head next to speaker), I can barely hear the audio underneath the fuzz. It seems like it would be something in the signal path before the speakers and possibly before the amps.

I have tried swapping power and signal cables with the working unit, but it did not change anything. I also swapped out the tweeters and woofers to verify that they still work, and they do. So that is good! So that leaves the amps, active crossovers, subsonic filter, input amp or power supply.

I have it all torn apart right now and I have given it a good visual inspection and do not see any obvious problems with the components.

One possible thing that may have caused this is electrostatic discharge. I noticed this problem for the first time after I felt a shock when I pushed on the power button.

Unfortunately, this problem started right after my warranty had expired. I know I could send the unit in for repair, but I fear that the cost of shipping plus the actual repair combined would be close to that of a new unit. Plus, I want to learn! That is why I would like to know if there is anything that I can do to repair the unit myself?

I have contacted Event and they gave me the schematic (I can email it to you if you think you could help me out), but had no ideas for what could be wrong.

Any ideas of what could be going on or some direction on how to troubleshoot other sections would be greatly appreciated.

Thanks in advance for the help, I would love to get back to making music!

Please let me know if you have any questions for me.

Thanks again

I just repaired my Alesis M1 Active MK2 speaker.
Trouble shooting was the easy part, replacing parts on a tightly loaded printed circuit with hairline tracings was the real challenge.

By the way if it's coming from "Both Speakers" it could be the input cable or point of connection at either end. Spray with Deoxit and clean at both ends.

Hopefully it'll go away. Make sure cables are good also, a cable going to ground will be noisy.

Good Luck