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Official M2 schematic
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Old 10th July 2018, 04:41 PM   #2801
Zen Mod is offline Zen Mod  Serbia
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Official M2 schematic
sorry, link to ?
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Old 10th July 2018, 05:11 PM   #2802
Attila I is online now Attila I  Germany
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see post #2152

your measured values are better than what i had.
later i have changed R3/R4 to 20R pot
got 0V at point C
no audible performance difference.

A.

Last edited by Attila I; 10th July 2018 at 05:38 PM.
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Old 10th July 2018, 05:16 PM   #2803
scranton is offline scranton  United States
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Official M2 schematic
Quote:
Originally Posted by Attila I View Post
my M2 is playing really nice for some weeks now buttttt...
i don't get it to work within the proclaimed specs on the attached scheme.
point A is 72mV,
point B is -64mV,
point C is 5mV,
voltage across R13/14 is 600mV,
voltage at optocoupler is 1-2: 1.047V
4-5: 10.4V
offset is fine
same on both channels.
all parts from Teabags BOM except Q1,2 = FQA
and Q3,4 = 8.84mA selected Toshibas from NicMac.

am i splitting hair or is there a real bug?
any input welcome
i was referring to the schematic Atilla I attached to his post #2454
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Old 10th July 2018, 06:03 PM   #2804
scranton is offline scranton  United States
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Official M2 schematic
Quote:
Originally Posted by Attila I View Post
see post #2152

your measured values are better than what i had.
later i have changed R3/R4 to 20R pot
got 0V at point C
no audible performance difference.

A.
thanks. wasn't sure about the -2mV at Pin 1 of the Edcor on one of the channels.The Toshiba 1530/201 sound great.
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Old 10th July 2018, 07:23 PM   #2805
Zen Mod is offline Zen Mod  Serbia
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no further comment needed

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Old 11th July 2018, 08:35 AM   #2806
Attila I is online now Attila I  Germany
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Oh, pleeease!
I'm only posting here to get some ironic comment from ZM
A.
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Old 11th July 2018, 09:29 AM   #2807
Zen Mod is offline Zen Mod  Serbia
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M2 is for Sissies !

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Old 11th July 2018, 10:24 AM   #2808
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Quote:
Originally Posted by Zen Mod View Post
M2 is for Sissies !

Thatís why you love it so much
A sensitive amp for sensitive speakers
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