Planar Speaker Asylum

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Planar Speaker Asylum

RE: MMG Tweeter cuts in and out

69.65.66.188

In Reply to: RE: MMG Tweeter cuts in and out posted by pavment on September 08, 2012 at 14:40:29

Welcome to the Asylum, Pav!

There are already a couple of good ideas to check on. If these don't seem to be enough to diagnose, we'll think of something else. Just let us know.

Fixing it yourself would probably not be hard. The problem, like Tyu implied, is voiding the warranty if you open them.

So, we can help you to find out as much as you can so you to tell Magnepan on Monday. Perhaps they'll allow you to go in and fix it yourself.

Follow Ups:

RE: MMG Tweeter cuts in and out - pavment 09:46:02 09/11/12 (4)
I called them up yesterday. After explaining the symptom, she told me to go ahead and open up the plate/panel. Apparently they think something may have been disconnected during delivery. I looked inside, wiggled the connectors and checked the connectivity with Mulitmeter between the terminals and the wires, nothing was open.
Put back up, I got back the treble but I am still cautious until I verify this over the week.

By the way is there a schematic available for the xovers of the MMG? Would love to see it.
- RE: MMG Tweeter cuts in and out - tyu 09:54:42 09/11/12 (3)
  This is all i have seen.....Yours dose not have the 25mf cap across the base...this is on the older mmgs....but can be add,ed.......goodluck
  - RE: MMG Tweeter cuts in and out - pavment 12:10:14 09/11/12 (2)
    Thanks! So the LF only has the inductor on the newer MMGs. Does the 25uF cap help any, I assume it filters out low frequency values so the cutoff is higher on the older MMGs?
    - RE: MMG Tweeter cuts in and out - josh358 14:24:35 09/11/12 (0)
      Here's the newer crossover schematic:
      MMG crossover (second version) (Open in New Window)
    - RE: MMG Tweeter cuts in and out - tyu 13:32:05 09/11/12 (0)
      I do not have the mmgs....minny others do....i have older Mg3a..2.5r..an Mg2c....the 2c are like the mmgs in some ways...just not Qr foil for tweeters...wire for tweeters...i have put a 20mf cap in the 2cs across the base driver....an i like what it dose... it not coming out..it makes the sound fuller..sweeter...with out the cap thay can sound a littel hot ..an in your face ...it seems to make the base drive match better with the top driver ...but this is just one mans o-pin others that have the mmg can say more.......goodluck

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