a wonderfull sziklai

sakis · 19th December 2008, 11:14 AM

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

AndrewT · 19th December 2008, 11:26 AM

I can't see a schematic.
Did you test your posting link?

sakis · 19th December 2008, 11:38 AM

check again andrew please and let me know

( characters are blue so link is active )

thanks

Markus2006 · 19th December 2008, 11:42 AM

You need to (at least) register to this forum to see the attachment.

Mark

AndrewT · 19th December 2008, 11:43 AM

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?

fotios · 19th December 2008, 12:11 PM

Saki

The same for me...

Fotis

sakis · 19th December 2008, 12:15 PM

......

sakis · 19th December 2008, 12:19 PM

there you go

AndrewT · 19th December 2008, 01:34 PM

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.

ostripper · 19th December 2008, 01:42 PM

Good OP stage, here is comparison..

EF type 2..

Sakis CFP..

SAme amp 2 different OPS's

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

19th December 2008, 11:14 AM	#1
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	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 __________________ SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

19th December 2008, 11:38 AM	#3
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	yes i did .... check again andrew please and let me know ( characters are blue so link is active ) thanks __________________ SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

19th December 2008, 12:15 PM	#7
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	ops.... will see to tah right away ...... __________________ SERVICE ΕΝΙΣΧΥΤΩΝ ΚΑΙ ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

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19th December 2008, 11:26 AM	#2
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	I can't see a schematic. Did you test your posting link?

19th December 2008, 11:42 AM	#4
Markus2006 diyAudio Member Join Date: Jan 2006 Location: Poland	You need to (at least) register to this forum to see the attachment. Mark

19th December 2008, 12:11 PM	#6
fotios diyAudio Member Join Date: Feb 2007 Location: ΔΡΑΜΑ - North Greece	Saki The same for me... Fotis

19th December 2008, 01:34 PM	#9
AndrewT diyAudio Member Join Date: Jul 2004 Location: Scottish Borders	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.

19th December 2008, 01:42 PM	#10
ostripper diyAudio Member Join Date: May 2008 Location: Albany , NY (smallbany)	Good OP stage, here is comparison.. EF type 2.. Sakis CFP.. SAme amp 2 different OPS's thanks, always wanted to build CFP. might as well start here.. OS

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