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Building my M^3 and two Sigma11

post #1 of 16
Thread Starter 

Hi,

 

Ages ago I started this thread http://www.head-fi.org/t/569141/help-building-m3#post_7722052 asking for help/advice to start building my M^3.

 

It took me a while, but all the bits and pieces have arrive from all over the world and its time to put everything together.

 

Here some pictures!

 

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dsc00095m.jpg
dsc00066uf.jpg
 
As you can see I started with the Sigma11 first, I will start with the M^3 today tho : )

 

 

Let me know if the images die or if there is a better place to upload them

 

UPDATE 26/11/2011

 

Just a few pictures, couldnt do much, busy day at work...

 

But please let me know what you thing : )  THANKS!

 

 

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Sorry for the bad image quality : /

 

By the way, I havent cut the legs completely because if I have to resolder any of the components it will be as easy as new to resolder, its a pain to resolder a component with the legs completely cut off.

 

Hi, I just want to confirm where and which wires connect to the green sockets. I have a 25VA double 12V. What I have figure out so far is that I have to connect RED and ORANGE to the middles ones and black to the first one (left) and white to the last (right). is this correct? or it doesnt really matter what way they go? (black and white/ red and orange) and on the input cables,  brown is LIVE and blue is NEUTRAL right? violet and white are ground? 

 

As you can see im not an expert, and I cant always get help from my mate who is helping me. all its left is the this, the wiring and grounding and the resistors for the LEDs which I need to go buy.

 

Any kind of help/recommendation will be appreciated. THANK YOU!

 

 

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By the way, this is the Sigma11 that will power the M^3

 

 

 

 

 

 

 


Edited by oporto - 11/30/11 at 5:06am
post #2 of 16

Good luck with your build. I am sure it will be a most rewarding project.

 

Quick question though, why two sigma11s?

post #3 of 16

yeah, since there isnt any mechanism to power this amp dual mono i dont get it. you cant even do it by hacking traces, you can however use S22 by not populating the ground channel.

 

maybe for a volume control board?

post #4 of 16
Thread Starter 


 

Quote:
Originally Posted by qusp View Post

yeah, since there isnt any mechanism to power this amp dual mono i dont get it. you cant even do it by hacking traces, you can however use S22 by not populating the ground channel.

 

maybe for a volume control board?


 



Quote:
Originally Posted by jdkJake View Post

Good luck with your build. I am sure it will be a most rewarding project.

 

Quick question though, why two sigma11s?



My bad, forgot to mention that one is for the M^3 and the other one is for the y2 full++ that I bought from MisterX

 

And thanks, I hope I dont have to resolder anything once its built


Edited by oporto - 11/24/11 at 8:21pm
post #5 of 16

Ummm...you might want to put some shrink tubing or tape on the helping hands claws.  Your PC board(s) will love you for it!  Just sayin'!

post #6 of 16
Thread Starter 
Quote:
Originally Posted by sarals View Post

Ummm...you might want to put some shrink tubing or tape on the helping hands claws.  Your PC board(s) will love you for it!  Just sayin'!



Thanks for the tip, my boards are loving it!

post #7 of 16
Quote:
Originally Posted by oporto View Post



Thanks for the tip, my boards are loving it!


wink.gif  You're welcome!

 

post #8 of 16
Thread Starter 

Help/Question! D :

please check last pictures : )


Edited by oporto - 11/30/11 at 4:45pm
post #9 of 16

there is no such thing as ground with AC on a transformer, there is no connection to ground

 

white and brown are your live wires, violet and blue are neutral. where are you? this will decide whether you use the primaries in series (230vac) or parallel (115vac)

 

for the secondaries just put them in order from left to right across the 4 inputs black-red-orange-grey, as the secondaries (if you have 2 as you do) are put in series with the red and orange connected in the 2 center inputs. this way a transformer with a center tap can be used by leaving the center unconnected, or connected to either of the 2 middle terminals, or even one that only has a single secondary can be connected to the outer 2 terminals only

post #10 of 16
Quote:

dsc00022yp.jpg

 


Are violet and blue truly neutral? or per this picture/label - are they duplicate taps to the white/brown? Or am I misunderstanding and you need a live + neutral to make it work? (AC always throws me - Edison's DC just makes more sense to my brain). 

 


Edited by liamstrain - 11/30/11 at 9:53pm
post #11 of 16
Thread Starter 
Quote:
Originally Posted by liamstrain View Post


Are violet and blue truly neutral? or per this picture/label - are they duplicate taps to the white/brown? Or am I misunderstanding and you need a live + neutral to make it work? (AC always throws me - Edison's DC just makes more sense to my brain). 

 



Hi, thank you very much, that is the information I needed. I am in Sydney, Australia : )

post #12 of 16

I hope you meant to quote qusp's post - not mine. Mine was a bunch of questions. 

post #13 of 16
Thread Starter 
Quote:
Originally Posted by liamstrain View Post

I hope you meant to quote qusp's post - not mine. Mine was a bunch of questions. 



yeah lol, im moving houses this weekend and gotta finish this before I move so my mind is not working like it should xD

post #14 of 16
Thread Starter 
Quote:
Originally Posted by qusp View Post

there is no such thing as ground with AC on a transformer, there is no connection to ground

 

white and brown are your live wires, violet and blue are neutral. where are you? this will decide whether you use the primaries in series (230vac) or parallel (115vac)

 

for the secondaries just put them in order from left to right across the 4 inputs black-red-orange-grey, as the secondaries (if you have 2 as you do) are put in series with the red and orange connected in the 2 center inputs. this way a transformer with a center tap can be used by leaving the center unconnected, or connected to either of the 2 middle terminals, or even one that only has a single secondary can be connected to the outer 2 terminals only



Hi mate, thanks a lot for this info, it was just what I needed. : )

post #15 of 16
Quote:
Originally Posted by liamstrain View Post


Are violet and blue truly neutral? or per this picture/label - are they duplicate taps to the white/brown? Or am I misunderstanding and you need a live + neutral to make it work? (AC always throws me - Edison's DC just makes more sense to my brain). 

 



i'm afraid i dont understand the question. blue and white is one primary and violet and brown is the second primary. this is what is called a universal voltage transformer. it will work in countries that have 115v like the US, by connecting blue and violet together in parallel to neutral and brown and white together to live. for us here we would connect the white to the violet to connect the 2 primaries in series and insulate that connection (trimmed short first if you plan it to be permanent) and then connect the blue to neutral and the brown to live

 

in short YES they are truly neutral, not ground, neutral and live are 2 ends of the same transformer winding, you do indeed need both (live and neutral) to form a circuit. past that i'm afraid i'm going to leave the research up to you, its covered many times on the net already and my explanation sure isnt going to add anything that hasnt been covered before.

 

good luck!!

 

 

 

Quote:
Hi mate, thanks a lot for this info, it was just what I needed. : )

haha no worries, 2nd time's a charm eh?


Edited by qusp - 12/2/11 at 9:34am
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