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Old 10th August 2006, 04:31 PM   #1
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Default 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
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Old 10th August 2006, 07:19 PM   #2
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> 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!
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Old 11th August 2006, 04:03 AM   #3
RSK is offline RSK  Malaysia
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Thumbs up 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.
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Old 11th August 2006, 08:40 AM   #4
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Hi all,
Who has Dr. Bora's email? Thanks a lot.
Best regards
Williams
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Old 11th August 2006, 08:59 AM   #5
mik is offline mik
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http://bas.elitesecurity.org/english.html
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Old 14th August 2006, 05:02 PM   #6
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Default !

kia-ora@blueisp.co.yu
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Old 5th March 2007, 07:37 PM   #7
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Default !

One picture of Sigma amplifier.Soon more from me....
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File Type: jpg sigma amp.jpg (99.9 KB, 2402 views)
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Old 5th March 2007, 08:12 PM   #8
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Default 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
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Old 5th March 2007, 10:00 PM   #9
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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.
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Old 6th March 2007, 06:57 AM   #10
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Default !

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...
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