| Williams Audio |
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 |
> 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 |
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 |
Hi all,
Who has Dr. Bora's email? Thanks a lot.
Best regards
Williams
|
|
|
| viktor1986 |
| One picture of Sigma amplifier.Soon more from me.... |
|
|
| destroyer X |
Good work....nice and clean construction.
Dr. Bora is a very good guy...i apreciate him a lot.
regards,
Carlos |
|
|
| 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. |
|
|
| viktor1986 |
| 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... |
|
|
| Williams Audio |
hi viktor,
i can't see the pictures you sent to carlos ??
can you send these again
williams |
|
|
| viktor1986 |
| quote: | Originally posted by Williams Audio
hi viktor,
i can't see the pictures you sent to carlos ??
can you send these again
williams |
I have not sent pictures to carlos!It's just one picture on forum. |
|
|
| destroyer X |
Bonito o emblema do Senta a Púa Grimberg...eu gostei muito.
Pretty that sign of second world war Brazilian aircraft Grimberg.
.......................
Thank you Victor1986.... from time to time i use to send and receive mails to and from Doctor Bora....he is very nice... a little busy too.
regards,
Carlos |
|
|
| viktor1986 |
| quote: | Originally posted by destroyer X
Bonito o emblema do Senta a Púa Grimberg...eu gostei muito.
Pretty that sign of second world war Brazilian aircraft Grimberg.
.......................
Thank you Victor1986.... from time to time i use to send and receive mails to and from Doctor Bora....he is very nice... a little busy too.
regards,
Carlos |
Yes,Bora is really nice guy and busy.He was sick and he was in hospital,but now is OK.I will attach picture's soon,I finished chasis for Sigma amplifier,capacitor's are F&T 2*30000uF for stereo,transformer 750VA... |
|
|
| SDF |
Hi Viktor, how sound the sigma amplifier is it différent of a studio ?
Which is your favorite ?
Thanks by advance;) |
|
|
| viktor1986 |
| quote: | Originally posted by SDF
Hi Viktor, how sound the sigma amplifier is it différent of a studio ?
Which is your favorite ?
Thanks by advance;) |
I still don't know!I need to buy 2SK1058 and 2SJ162 and then I will tell you. |
|
|
| destroyer X |
But i am "feeling"...sniffing...that Bora is sick.
Can someone inform what is going on with Bora....his daddy passed away some monthes ago...but i am having concerns about his own health.
I have invited him to come to us...but i do not know if he is strong enougth to do that.
Bora used to "surf" the internet....once he found Brazilians talking inside one of our foruns...talking about him....he came to me asking me translations....so...he use to track everything that is connected to his name and amplifiers.
I have strong concerns.... i hope someone can inform something about Bora.....VICTOR!!!!...please, do you know something?
regards,
Carlos |
|
|
| viktor1986 |
| quote: | Originally posted by destroyer X
But i am "feeling"...sniffing...that Bora is sick.
Can someone inform what is going on with Bora....his daddy passed away some monthes ago...but i am having concerns about his own health.
I have invited him to come to us...but i do not know if he is strong enougth to do that.
Bora used to "surf" the internet....once he found Brazilians talking inside one of our foruns...talking about him....he came to me asking me translations....so...he use to track everything that is connected to his name and amplifiers.
I have strong concerns.... i hope someone can inform something about Bora.....VICTOR!!!!...please, do you know something?
regards,
Carlos |
Bora it's now OK as I know.Why? |
|
|
| destroyer X |
because his designs are appearing here, in this International forum...as there are people that wants his presence...as he may be happy to know what is happening here... and we will be honored by his presence.
Also i am a personal friend of him..we used in the early past to communicate with reasonable constance...so...i am worried...i have concerns related what happened with Bora.
I have perceived that those things interest him...as i told....happened that he answered me translations of Brazilian forum text.
This means, to me, that he is hardly interested to know everything that is connected to his name or designs,
Also because we need some advises, or, at least i need those.
And more, beeing the designer, he is the responsable related the amplifier, will be usefull to him, to know the bugs that have appeared, also to know some "special" uses, alike the one Sakis Petropoulos force the unit to work...... as Sakis needs an amplifier that will be overdriven by the mixer operator during parties..also that will work full power all time long...well..those things.
I hope i could answer your question (Why?)
regards Victor.
Carlos |
|
|
| viktor1986 |
| quote: | Originally posted by destroyer X
because his designs are appearing here, in this International forum...as there are people that wants his presence...as he may be happy to know what is happening here... and we will be honored by his presence.
Also i am a personal friend of him..we used in the early past to communicate with reasonable constance...so...i am worried...i have concerns related what happened with Bora.
I have perceived that those things interest him...as i told....happened that he answered me translations of Brazilian forum text.
This means, to me, that he is hardly interested to know everything that is connected to his name or designs,
Also because we need some advises, or, at least i need those.
And more, beeing the designer, he is the responsable related the amplifier, will be usefull to him, to know the bugs that have appeared, also to know some "special" uses, alike the one Sakis Petropoulos force the unit to work...... as Sakis needs an amplifier that will be overdriven by the mixer operator during parties..also that will work full power all time long...well..those things.
I hope i could answer your question (Why?)
regards Victor.
Carlos |
Well,I have sent him mail few day's ago and hi wrote me that his has seen text on this forum about Legend.I think that hi will sonn write something useful for Sakis and to all us.
I also built Epsilon-Lavardin amplifier.It's only idea of boraomega,but I use IRFP240 and IRFP9240.
Sorry people because I write so small,I don't know very well English....I must to take a course! |
|
|
| destroyer X |
Englander ( the language i understand..that one makes me write...not real english) is very complicated...one single word and hundreds of meanings...when i have hundreds of words that can explain each special meaning.
Well..complicated too...but Japanese is much more complicated.
Watakushi wa buragiru gin des.
I was in Japan telling taxi drivers that:
- Watashi wa buragiru gin des.
And the driver gone laughing...all them..till i discovered that watashi is for girls only...ahahahah!
regards,
Carlos |
|
|
| viktor1986 |
| Carlos,you make me laugh!!!:D :D :D |
|
|
| viktor1986 |
As you can see,2SK1058 and 2SJ162 is missing from PCB.Because that amplifier is 90% finished.
 |
|
|
| viktor1986 |
Another one... |
|
|
| destroyer X |
Thank you as you are sharing those things with us.
regards,
Carlos |
|
|
| roly3055 |
Dear everyone ,
Where can find the Clepsidra PCB
(Victor1986 can you post the PCB here)
Thank you !!!!:smash: |
|
|
| viktor1986 |
| quote: | Originally posted by roly3055
Dear everyone ,
Where can find the Clepsidra PCB
(Victor1986 can you post the PCB here)
Thank you !!!!:smash: |
Oh no,this is topic for Sigma amplifier!
Maybe in borivoje jagodic topic if boraomega agree with that.:D |
|
|
| viktor1986 |
| quote: | Originally posted by roly3055
Dear everyone ,
Where can find the Clepsidra PCB
(Victor1986 can you post the PCB here)
Thank you !!!!:smash: |
Boraomega agree!
PCB for Clepsidra is in "Bora is a nice guy from Serbia - Yugoslávia" tread.
Recomended for use. |
|
|
|
