sigma amp from dr. borivoje jagodic

Williams Audio · 10th August 2006, 04:31 PM

Hi all,
I have the sigma schematic but don't have any other information about it. There is some body that built it?
I know that some members had some specs about it.
So, help will be appreciate it
Best regards
Williams

bogdan_borko · 10th August 2006, 07:19 PM

> SinPower-------- 160W RMS/8 oma ; 225W RMS/4 oma
> MUsicPOwer (IHF)- 210W RMS/8 ohm ; 300W RMS/4
> FReq.---- 10Hz-105KHz (-3dB THD below 0.005%)
> THD------------------ 0.004% na 100W RMS/8 ohm
0.008% na 180W RMS/8 ohm
0.009% na 240W RMS/4 ohm
> TIM------------------- 0.005% na 140W RMS/8 ohm (50Hz/7KHz 4:1)
> S/N--- >100dB (100W RMS)
> Slew rate-------------115V/uS
> Damping faktor------->450 na 150W RMS/8 ohm

These are the specs...
SIgma is a high quality amp,I didn`t built it or listened to this amplifier but I`m shure it is a good and stable.
cheers!

RSK · 11th August 2006, 04:03 AM

Write to Bora. He is truly very helpfull person.
I am sure he will help you with pcb and contruction. His designs are very good sound.

Cheers.

Williams Audio · 11th August 2006, 08:40 AM

Hi all,
Who has Dr. Bora's email? Thanks a lot.
Best regards
Williams

mik · 11th August 2006, 08:59 AM

http://bas.elitesecurity.org/english.html

viktor1986 · 14th August 2006, 05:02 PM

kia-ora@blueisp.co.yu

viktor1986 · 5th March 2007, 07:37 PM

One picture of Sigma amplifier.Soon more from me....

destroyer X · 5th March 2007, 08:12 PM

Good work....nice and clean construction.

Dr. Bora is a very good guy...i apreciate him a lot.

regards,

Carlos

grimberg · 5th March 2007, 10:00 PM

Carlos,

Here is the schematic:

http://bas.elitesecurity.org/mojiprojekti1.html

I cannot buy those MOSFETs from local suppliers here in the US, as none of them seems to have them in stock. I wonder if you can get them in Brazil.

viktor1986 · 6th March 2007, 06:57 AM

Quote:

Originally posted by grimberg
Carlos,

Here is the schematic:

http://bas.elitesecurity.org/mojiprojekti1.html

I cannot buy those MOSFETs from local suppliers here in the US, as none of them seems to have them in stock. I wonder if you can get them in Brazil.

I will buy 2SK1058 and 2SJ162 from digikey.In my country it is not possible to find original...

10th August 2006, 04:31 PM	#1
Williams Audio diyAudio Member Join Date: Apr 2004 Location: far away	sigma amp from dr. borivoje jagodic Hi all, I have the sigma schematic but don't have any other information about it. There is some body that built it? I know that some members had some specs about it. So, help will be appreciate it Best regards Williams __________________ williams audio

11th August 2006, 04:03 AM	#3
RSK diyAudio Member Join Date: Nov 2004 Location: K.L.	Dr.Bora's amp Write to Bora. He is truly very helpfull person. I am sure he will help you with pcb and contruction. His designs are very good sound. Cheers.

11th August 2006, 08:40 AM	#4
Williams Audio diyAudio Member Join Date: Apr 2004 Location: far away	Hi all, Who has Dr. Bora's email? Thanks a lot. Best regards Williams __________________ williams audio

14th August 2006, 05:02 PM	#6
viktor1986 diyAudio Member Join Date: Jun 2005 Location: Belgrade, Serbia	! kia-ora@blueisp.co.yu __________________ Pa mislim sta reci!

5th March 2007, 08:12 PM	#8
destroyer X diyAudio Member Join Date: Feb 2004 Location: Recife - Brasil Northeast	Very nice Victor....if possible, please, post the schematic for us too. Good work....nice and clean construction. Dr. Bora is a very good guy...i apreciate him a lot. regards, Carlos


	Please consider donating to help us continue to serve you. Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving

10th August 2006, 07:19 PM	#2
bogdan_borko diyAudio Member Join Date: Nov 2005 Location: serbia, zajecar	> SinPower-------- 160W RMS/8 oma ; 225W RMS/4 oma > MUsicPOwer (IHF)- 210W RMS/8 ohm ; 300W RMS/4 > FReq.---- 10Hz-105KHz (-3dB THD below 0.005%) > THD------------------ 0.004% na 100W RMS/8 ohm 0.008% na 180W RMS/8 ohm 0.009% na 240W RMS/4 ohm > TIM------------------- 0.005% na 140W RMS/8 ohm (50Hz/7KHz 4:1) > S/N--- >100dB (100W RMS) > Slew rate-------------115V/uS > Damping faktor------->450 na 150W RMS/8 ohm These are the specs... SIgma is a high quality amp,I didn`t built it or listened to this amplifier but I`m shure it is a good and stable. cheers!

11th August 2006, 08:59 AM	#5
mik diyAudio Member Join Date: Dec 2001 Location: Serbia	http://bas.elitesecurity.org/english.html

5th March 2007, 10:00 PM	#9
grimberg diyAudio Member Join Date: Oct 2002 Location: California, USA	Carlos, Here is the schematic: http://bas.elitesecurity.org/mojiprojekti1.html I cannot buy those MOSFETs from local suppliers here in the US, as none of them seems to have them in stock. I wonder if you can get them in Brazil.

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
GB for PCB-s of Dr Jagodic (boraomega) designs	boraomega	Group Buys	2	30th July 2009 09:39 PM
FE 208 Sigma	Puffin	Full Range	30	12th November 2007 10:05 PM
Allegro preamplifier by Dr. Borivoje Jagodic	viktor1986	Solid State	1	25th August 2006 12:26 PM
Looking for schematic for Cal Sigma II Dac	marsupialx	Solid State	0	19th December 2004 01:14 PM
Need resistor value for CAL Sigma DAC	marsupialx	Digital Source	4	10th December 2004 03:24 PM

New To Site?	Need Help?
Register to Participate Search Privacy Statement Contact Us	Frequently Asked Questions Did you forget your password? Mark Forums Read