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Magnepan 1.7 crossover capacitor improvement?

In my never ending quest to eliminate "glare" from all components I've recently realized that my MG 1.7's are a contributor. The crossover caps in them are nothing to write home about, a mixture of non descript caps including an Axon totaling 116.8uf in the mid range and an additional 10uf Axon for the tweeter. Since Axon is basically Solens which does have glare issues, I'm ready to move on. After snooping aroud it sounds like a mixture of Clarity ESA series/ 250V + Mundorf supreme replacements in the mid range and Mundorf Supreme for the tweeter would be a good choice. But i'm curious if someone here has already trod this path and found a different path thats reasonably affordable ( not Duelends and Vcaps...grin)
At this point I have glare about 95% tamed but there are still certain CD passages that cause that chalk board scraping sensation.
128x128davide256
brownsfan
1,508 posts
 
I had the kind of glare issues you are describing with my 1.6's. Treating the corners from floor to ceiling tamed most of it. When I replaced the 1.6's with 3.7's, I was shocked to see the glare completely eliminated. I have wondered if the difference is due to the tweeters on the inside vs. outside. If you have the tweeters, out, it might be worth trying them inside before you start modifying the speakers.
schubert
7,386 posts
 
Seen several guys with same complaint cure it with Analysis Plus Oval 9 or 12 speaker cable. I thought Oval 12 OUTSTANDING with Maggys.
jordi's avatar
jordi
110 posts
 
the above directions on how to remove the side supports are correct but the cap value is wrong ...its 115.8 not 116.8 and the best combo you can use is 3 33uf Sonicaps gen1.... one 10uf sonicap.... and one 6.8sonicap......Use a 10uf Dynamicap in the tweet position and use Alpha Core 1.4 inductors....and you will die 100 thousand deaths over the improvement. If you want pics and help just drop me an e-mail at prettypugsley@rcn dotcom
jordi's avatar
jordi
110 posts
 
The upgrade requires 115.8mf not 116.8 as stated above and a 10mf and 1.4uf inductor. Best is to use alpha core inductor and 3 sonicap 33mf a 10mf and 6.8mf to create your 115.8. You will not fit this in the panel base and must do it external and this will cost about 5-600.00 and will make your 2k speakers soUnd like 20k speakers. The difference is massive if you use the combo mentioned above. Use dynamicaps in the tweeter position the caps and inductor stock in the 1.7 are the worst possible quality on earth and were done to meet a price point because no one in their right mind would use the junk caps and inductors they used for any other reason...it wil take some time and patience but is well worth it
jordi's avatar
jordi
110 posts
 
After a 2 week period I can tell you all that if magnepan company could hear my crossover improvement they would throw up........... The 1.7's with my external crossover blow away their stock 3.6's by a mile...these things are way more smooth, way more revealing, way more bass that is tighter and faster and the highs more extended and no edge whatsoever. Its unbelievable what a mess they are stock. Just have to realize you might as well leave the stock crossover in place and make it external because there is no way to fit the mod inside the little space that the 1.7's allow for crossover. Very very poor design and overall just a price point setup. The 1.7's deserve better then what they have stock .............they deserve my setup 1000% period!!!!!!!!!!!
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