datzeel amp schema this work?

tadiam · 5th December 2008, 03:51 PM

http://perso.orange.fr/francis.audio...artzeel_r4.gif

This amp work how sound

Steve Dunlap · 5th December 2008, 04:58 PM

This amp is claimed to be VERY good if you believe reviewers. Considering the price, you may have trouble finding one to listen to in person. I have heard most of the ridiculously priced amps, but not this one. The schematic is simple enough. Build one and try it. I suspect it will sound quite good.

sakis · 5th December 2008, 05:15 PM

i was working with ...in a similar topology R13-14 was the sonic killers but also keep the amp working safelly .....

i could built it too ..... but on the other hand i dont like amps that have no trimers on them ....... there is nothing to adjust on them .... ha ha ha

then again 50 volt rails looks kinda much for only a couple of transistors

what happens in 4 ohms .... can these two transistors handle it ????

i think not .... well lets see ...

another thing i dont recall seeing somewhere else is the diodes in parallel with the base resistors ( D3-D4) ..... can somebody what is the exact purpus of that ????
thanks

regards sakis

analog_sa · 5th December 2008, 07:04 PM

The circuit was published by Mr Deletraz without component values. Seems it has now been simulated.

PMA · 5th December 2008, 07:09 PM

The author of the circuit and the patent does not understand how to use D3 and D4, unfortunately. Read

http://www.stereophile.com/solidpowe...el/index4.html

This amp has serious design flaws (see fuse blow).

nelsonvandal · 6th December 2008, 06:23 AM

Isn't this just a current feedback amplifier with a diamond buffer outside the loop as output stage? No emitter resistors, neiter in the input nor the output stage. I wonder at what bias it runs.

I guess it'll sound like a le Classe A.

bogdan_borko · 6th December 2008, 09:37 AM

Yes this IS a "feedback amplifier".

tadiam · 6th December 2008, 09:39 AM

build this...?
and the bias adjust?

Cuda · 23rd March 2010, 01:51 PM

nobody has used this schematic ?

5th December 2008, 03:51 PM	#1
tadiam diyAudio Member Join Date: Mar 2007	datzeel amp schema this work? http://perso.orange.fr/francis.audio...artzeel_r4.gif This amp work how sound __________________ audio

5th December 2008, 05:15 PM	#3
sakis diyAudio Member Join Date: Jan 2006 Location: nea makri athens greece	in a similar circuit i was working with ...in a similar topology R13-14 was the sonic killers but also keep the amp working safelly ..... i could built it too ..... but on the other hand i dont like amps that have no trimers on them ....... there is nothing to adjust on them .... ha ha ha then again 50 volt rails looks kinda much for only a couple of transistors what happens in 4 ohms .... can these two transistors handle it ???? i think not .... well lets see ... another thing i dont recall seeing somewhere else is the diodes in parallel with the base resistors ( D3-D4) ..... can somebody what is the exact purpus of that ???? thanks regards sakis __________________ SERVICE ΙΑΠΩΝΙΚΩΝ ΜΗΧΑΝΗΜΑΤΩΝ ΗΧΟΥ www.eastelectronics.gr

6th December 2008, 09:39 AM	#8
tadiam diyAudio Member Join Date: Mar 2007	re build this...? and the bias adjust? __________________ audio

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5th December 2008, 04:58 PM	#2
Steve Dunlap diyAudio Member Join Date: Sep 2008 Location: Here	This amp is claimed to be VERY good if you believe reviewers. Considering the price, you may have trouble finding one to listen to in person. I have heard most of the ridiculously priced amps, but not this one. The schematic is simple enough. Build one and try it. I suspect it will sound quite good.

5th December 2008, 07:04 PM	#4
analog_sa diyAudio Member Join Date: Aug 2002 Location: Sofia	The circuit was published by Mr Deletraz without component values. Seems it has now been simulated.

5th December 2008, 07:09 PM	#5
PMA diyAudio Member Join Date: Apr 2002 Location: Prague, Kitakyushu, Fukuoka	The author of the circuit and the patent does not understand how to use D3 and D4, unfortunately. Read http://www.stereophile.com/solidpowe...el/index4.html This amp has serious design flaws (see fuse blow).

6th December 2008, 06:23 AM	#6
nelsonvandal diyAudio Member Join Date: Nov 2006	Isn't this just a current feedback amplifier with a diamond buffer outside the loop as output stage? No emitter resistors, neiter in the input nor the output stage. I wonder at what bias it runs. I guess it'll sound like a le Classe A.

6th December 2008, 09:37 AM	#7
bogdan_borko diyAudio Member Join Date: Nov 2005 Location: serbia, zajecar	Yes this IS a "feedback amplifier".

23rd March 2010, 01:51 PM	#9
Cuda diyAudio Member Join Date: Sep 2009	nobody has used this schematic ?

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