P- = tx2?? first Yellow to TXI-, First black to TXI+, 2nd yellow to TXO+, 2nd black to TXO- ??
P+ = tx1
S- = tx4
S+ =. tx3
P- = tx2?? first Yellow to TXI-, First black to TXI+, 2nd yellow to TXO+, 2nd black to TXO- ??
Hi Adam! Wow! That's fantastic! the MPA-81 is a ridiculous value for the money and the Arienne Flat K47 is like strapping a booster rocket onto it to the next level.Wordsushi, your Youtube videos where you replaced the capsule with Arienne flat K47 in BFL V47 and MPA-81 convinced me to get MPA-81 myself.
MPA-81S replacement sounded so good. I am waiting for the capsule to arrive. I am thinking of putting the ORS 87 circuit board with the modification suggested in this thread for flat K47.
This is a fairly decent implementation of a standard transformerless Schoeps circuit and you may have actually seen this same circuit before in the.... drum roll please....I am posting pictures of MPA-81S if anyone would be interested and maybe figure out what classic design it might have followed:
View attachment 130953
Wow!This looks so sexy!I am posting pictures of MPA-81S if anyone would be interested and maybe figure out what classic design it might have followed:
View attachment 130953
@WordsushiThis is a fairly decent implementation of a standard transformerless Schoeps circuit and you may have actually seen this same circuit before in the.... drum roll please....
View attachment 130955
View attachment 130956
Vanguard V4
This is a fairly decent implementation of a standard transformerless Schoeps circuit and you may have actually seen this same circuit before in the.... drum roll please....
View attachment 130955
View attachment 130956
Vanguard V4
Yes, I should try it of course when I think about it. And then maybe buy another flat K47 later if I wanna keep it that way but build U47 style microphone.Hi Adam! Wow! That's fantastic! the MPA-81 is a ridiculous value for the money and the Arienne Flat K47 is like strapping a booster rocket onto it to the next level.
Take into account that the ORS 87 is cardioid only so you'd lose the ability to do fig-8, which I think is the sweet spot with this combo. The Flat K47 in Fig-8 is sublime. Try it on the stock circuit first and see if you like it. Thank you for posting and please feel free to comment back on your thoughts once you've had a chance to play with it.
I'm going to start a new thread for the MPA-81s just to keep it tidy.
That's how it's done!I'm going to start a new thread for the MPA-81s just to keep it tidy.
Black - primary
Yellow - secondary
I'm confused by that screenshot and the description in some Aliexpress items. The Chinese there, if Google Translate is correct, says that the left side of the transformer is yellow with the right side being black. Is the Ali T-13 (ASTDS) reversed compared to the AMI T-13?
Not related to AMI T-13.
Follow @Khron 's directions
Measure ohmic resistance with DMM
Between the wires that measure more, (aprox 395...483 ohm), is the Primary that connects to C7.
The other two wires connect to the R18 and R19.
Did you use LSK189?Hi all,
This is my build on V1 board, using khron's BOM, Neutrik transformer (on the back) and Vami K67 capsule.
pretty Happy with the result !
Using 36 zener, I get 33v and set to 16,5v at the drain.
Thanks to @anvl for the body tips !
Thanks to @Papa Tango Charly for the PCB !
Enjoy°
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