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Old 19th December 2008, 11:14 AM   #1
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Default a wonderfull sziklai

found this schematic in a greek forum ...really dont know where is it coming from and since i am crazy about these amps i thought about posting the schematic to get opinions from other users about it ...

thanks Click the image to open in full size.
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 19th December 2008, 11:26 AM   #2
AndrewT is offline AndrewT  Scotland
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I can't see a schematic.
Did you test your posting link?
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Old 19th December 2008, 11:38 AM   #3
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Default yes i did ....

check again andrew please and let me know

( characters are blue so link is active )

thanks
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 19th December 2008, 11:42 AM   #4
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You need to (at least) register to this forum to see the attachment.

Mark
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Old 19th December 2008, 11:43 AM   #5
AndrewT is offline AndrewT  Scotland
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I can't read the text/instructions, but I'm guessing it's asking me to log in and/or register.
No schematic.
Quote:
Did you test your posting link?
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Old 19th December 2008, 12:11 PM   #6
fotios is offline fotios  Greece
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Saki

The same for me...

Fotis
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Old 19th December 2008, 12:15 PM   #7
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Default ops.... will see to tah right away

......
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 19th December 2008, 12:19 PM   #8
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Default sorry guys

there you go
Attached Images
File Type: jpg joy200.jpg (75.6 KB, 3663 views)
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SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr
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Old 19th December 2008, 01:34 PM   #9
AndrewT is offline AndrewT  Scotland
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2pair of 1943/5200 on 56Vdc supplies cannot reliably drive a 4ohm speaker.
Even an 8ohm speaker would need to be of moderate reactance to keep this output stage reliable.
It will drive a 12ohm severe reactance speaker.

reduce the supply voltage <=50Vdc

and get rid of those 5401 in the input LTP and the driver being used as a VAS.
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Old 19th December 2008, 01:42 PM   #10
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Good OP stage, here is comparison..

EF type 2..

Click the image to open in full size.

Sakis CFP..

Click the image to open in full size.

SAme amp 2 different OPS's

thanks, always wanted to build CFP. might as well start here..
OS
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