ok. I was gone to another planet (or sumpthin') for few months there, nothing that would suprise the regular folks here.
Back to the subject at hand.
I seem to be hearing that that there is a Magus schematic floating about now?
That would be nice.
Instead of breaking down and fixing my Modded Magus B-ver C, I simply fixed a different one..and also bought a Broken Counterpoint 3.0 in the meantime.
Anyone got that schematic?
Back to the subject at hand.
I seem to be hearing that that there is a Magus schematic floating about now?
That would be nice.
Instead of breaking down and fixing my Modded Magus B-ver C, I simply fixed a different one..and also bought a Broken Counterpoint 3.0 in the meantime.
Anyone got that schematic?
Dear SKLau
Will you please send me the Magus schematic and if possible, its power supply schem. too?
rwellerson@hotmail.com
Many thanks!
Ricardo
Will you please send me the Magus schematic and if possible, its power supply schem. too?
rwellerson@hotmail.com
Many thanks!
Ricardo
Hello SKLau,
I very interested in the Magus file too, can you give me
sjh327@hotmail.com
Thank you very mach!
I very interested in the Magus file too, can you give me
sjh327@hotmail.com
Thank you very mach!
SKLau, Could you please send me a copy of the schematic as well to: altecman@aussiebroadband.com.au.
SCHEMATIC MFA MAGAUS
YOU STILL HAVE ONE
PAY YOU FOR IT
Live email address removed by moderation
gravity_at_macomb_dot_com
YOU STILL HAVE ONE
PAY YOU FOR IT
Live email address removed by moderation gravity_at_macomb_dot_com
Hi all,
Kind of tired from the (original) VERY high gain of my Magus B preamp and its lack of some finesse when compared to other more refined preamps I decided to mainly reduce the gain with a small dose of negative feedback to it.
And before this decision on adopting NFB I had already swaped the original tube (6DJ8) to a 6922, ECC88, 6N1P, 6FQ7 without much success: a small change here and there but the modest performance (and way HIGH gain...) was always present.
When I say modest I'm referring to the preamp behavior before I added negative feedback: I will never forget the first song I listened to when NFB was added!
MUCH better control of bass response, deeper than ever, great midrange and beautiful top extension besides now a great range for the volume control.
And a better resolution of detail...
After this point I tried again the tubes listed above and added a new one: the 6N6P which became the absolute champion of this upgrade followed by the 6FQ7.
But one can use any of the above tubes and taste his particular outcome.
Heaters supply: with 6N6P power trafo a little warmer now but no problems after a very long time...
NFB mods: very simple.
All you have to do is replace the original input resistor from 1k to 100k.
No need to remove the PCI: just cut out the 1k resistor and solder the new one (100k, each channel) to the solder pads from above.
After that a piece of the wire of your audiophile choice from output to input and a R (shrink-wrapped) resistor in series with that wire.
Feedback amount: experiment in the range suggested in the picture (R: 390k to 820k).
The smaller this resistor value the smaller the preamp gain.
If for any reason the results are not to anyone's taste everything is very simple to undo.
I guess these mods can be applied to others Magus versions, check this first, is not that difficult.
Did these mods 5 years ago, never looked back...
[ ]
Ricardo
some pictures:
Kind of tired from the (original) VERY high gain of my Magus B preamp and its lack of some finesse when compared to other more refined preamps I decided to mainly reduce the gain with a small dose of negative feedback to it.
And before this decision on adopting NFB I had already swaped the original tube (6DJ8) to a 6922, ECC88, 6N1P, 6FQ7 without much success: a small change here and there but the modest performance (and way HIGH gain...) was always present.
When I say modest I'm referring to the preamp behavior before I added negative feedback: I will never forget the first song I listened to when NFB was added!
MUCH better control of bass response, deeper than ever, great midrange and beautiful top extension besides now a great range for the volume control.
And a better resolution of detail...
After this point I tried again the tubes listed above and added a new one: the 6N6P which became the absolute champion of this upgrade followed by the 6FQ7.
But one can use any of the above tubes and taste his particular outcome.
Heaters supply: with 6N6P power trafo a little warmer now but no problems after a very long time...
NFB mods: very simple.
All you have to do is replace the original input resistor from 1k to 100k.
No need to remove the PCI: just cut out the 1k resistor and solder the new one (100k, each channel) to the solder pads from above.
After that a piece of the wire of your audiophile choice from output to input and a R (shrink-wrapped) resistor in series with that wire.
Feedback amount: experiment in the range suggested in the picture (R: 390k to 820k).
The smaller this resistor value the smaller the preamp gain.
If for any reason the results are not to anyone's taste everything is very simple to undo.
I guess these mods can be applied to others Magus versions, check this first, is not that difficult.
Did these mods 5 years ago, never looked back...
[ ]
Ricardo
some pictures:
