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Old 6th February 2018, 11:50 PM   #721
Zen Mod is offline Zen Mod  Serbia
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two different sorts of fun
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Old 7th February 2018, 07:31 AM   #722
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PPS, et. al. Mags, loads of mags. #! /bin/sh # Wed Feb 7 01:28:08 MST 2018 # grab the current PDFs of the R - Pastebin.com
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Old 7th February 2018, 08:03 AM   #723
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Is there any alternative solution to avoid the usage (or to minimize) of the C2 electrolytic capacitor. As Nelson Pass said "No capacitors anywhere in the circuit...". Especially the electrolytics which killing the music.
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Old 7th February 2018, 08:38 AM   #724
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be aware that same guy put electrolytics in SIT amps
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Old 7th February 2018, 08:59 AM   #725
miklos is offline miklos  Hungary
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Quote:
Originally Posted by argqsys View Post
Is there any alternative solution to avoid the usage (or to minimize) of the C2 electrolytic capacitor. As Nelson Pass said "No capacitors anywhere in the circuit...". Especially the electrolytics which killing the music.
The simplest way would be to use a single ended output transformer instead of the choke, but the cap sounds just fine to me.
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Old 7th February 2018, 09:29 PM   #726
DougL is offline DougL  United States
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Originally Posted by argqsys View Post
Is there any alternative solution to avoid the usage (or to minimize) of the C2 electrolytic capacitor. As Nelson Pass said "No capacitors anywhere in the circuit...". Especially the electrolytics which killing the music.
3 options come to mind.
1. Use a 1:1 transformer instead of L1 and C2. It would require the same primary inductance.
2. Have a transformer wound with superconductor wire. Its the resistance of L1 that places the DC on the output.
3. Find a different circuit that does not require a capacitor.

While there may be a way to make it DC coupled, it violates my simplicity esthetic.

Sorry for the silliness.
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Old 9th February 2018, 08:07 PM   #727
flocchini is offline flocchini  United States
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Default Big MoFo with M2 buffer

I believe ZM suggested that to get additional gain for the MoFo use the FE of the M2.

I inserted a M2 FE between the my XP10 and the Big MoFo. Gives me the gain I need and initial listening makes me want to continue listening (and experimenting)

Thanks all

Best

Bob

ZM - more from my heat sink collection - I like these and will use in my next ( and final ) amp
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Old 9th February 2018, 08:40 PM   #728
PSz. is offline PSz.  United States
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Very nice Bob!

I am on the same path. Currently using Altec 15095As as autoformers in M2 style in front of my 12 volt MoFo. It is a very nice pairing.

Also, the B1 transformer that NP displayed at BAF is basically the same as the M2 front end.
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Old 9th February 2018, 08:49 PM   #729
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and I see you're using motor-run caps for signal .......

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Old 9th February 2018, 11:57 PM   #730
argqsys is offline argqsys  Greece
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Quote:
Originally Posted by flocchini View Post
I believe ZM suggested that to get additional gain for the MoFo use the FE of the M2.

I inserted a M2 FE between the my XP10 and the Big MoFo. Gives me the gain I need and initial listening makes me want to continue listening (and experimenting)

Thanks all

Best

Bob

ZM - more from my heat sink collection - I like these and will use in my next ( and final ) amp
Can you analyze a little bit this for the beginners like us. What is FE of M2 & XP10 ?
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