Studio Reference Amplifier

CORRECTION ON SR 50 PCB-my deepest apology...

Hope this may help(based on the original schematics of SR50).

ENJOY!!!

Correction made:
1. wrong supply of ic (copper wire of pin 7 should be in 4 and vice versa-see pdf)

2. wrong value of r25 should be 100 not 1k
3. wrong value of r26 should be 100 not 1k
4. wrong value of r27 should be 100 not 3k3
5. wrong value of r28 should be 100 not 3k3
 

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Hello All!
This is my very first post in this forum🙂
I've been watching for a long time the amplifier topic in this forum, but still haven´t taken my knowledge - my English is also quite bad🙁 Anyway I posted a picture in my amplifier experiments of Apex SR200. It has not been tested yet, heatsink must be machined, as well as the electrolytic caps solder for place, then I will test the amplifier.



6849
 
.......and so on ....

..... D1 zenner diode must be reversed , R7=1k resistor in wrog position not to pin 4 IC (not this way )..... , output transistors are the same 2SC5200 ? and so on ........ 🙂
 
Last edited:
thanks for the correction

..... D1 zenner diode must be reversed , R7=1k resistor in wrog position not to pin 4 IC (not this way )..... , output transistors are the same 2SC5200 ? and so on ........ 🙂

hope this is fine...:scratch:
 

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