Re: Repairing Alesis M1 Active mk2 Monitor Speakers

I have good news, I successfully repaired my Mk2s and they have been powered on for a month or so without any problem. Sounds very nice, especially the bass are very impressive for woofer of this size.

I basically followed my plan and things mostly went OK. I repaired the water damage by removing part of the panel with burrs, then filled it back to shape with wood flour and epoxy, with the help of 3D-printed mock back plate. Replaced the ferrofluid in tweeters with APG L11 low viscosity FF, put in new polyfill, and...

Re: Repairing Alesis M1 Active mk2 Monitor Speakers

Found this thread while searching for repair knowledge on the MKII, was surprised to know there are still so many people interested in these speakers(it has been more than a decade, obviously).

I recently acquired a pair of MKIIs, one in working order with some water damage to the cabinet, while the other one won't turn on. Took both apart and found the working one has a lot of bulging caps.

The bad one has exploded [B]F1 R11 R15[/B] and [B]Q3[/B], which seems to suggest a short in [B]Q1[/B]. This...

Re: New Members - please post your introductions here

Hello everyone! Greetings from China! I'm Ryan, a hardware engineer, music enthusiast and part-time live audio engineer.