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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 03:37 
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Joined: 18 Jan 2015, 15:50
Posts: 14
Well Max

I have one pic when I built zca , you know that is similar . Power supply have 33000uf x 2 and the choke is almost 9mh , not enought to headphones .



I DONT LIKE THE FAN to . My fault. jejeje

The bulbs , this is the 4th version jajaja.

Remember , just a box to check the components. :D


Regards.


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 03:45 
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Joined: 18 Jan 2015, 15:50
Posts: 14
Mark , to be clear .

I really really enjoy with this sound :thumbsup:


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 04:09 
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Joined: 18 Jan 2015, 15:50
Posts: 14
Mark , here the theorical testing . ;) and more or less how I have it . It's very curious the behaviour this circuit .
I am not very interested in distortion, my distorsion analyzer are my ears. :headphones: 8-)

I am waiting your new prototypes. :thumbsup:

Regards


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 04:26 
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Joined: 09 Apr 2013, 02:59
Posts: 48
Location: Germany
Hi Makjoe
Thank you for the pictures, I always like to see how others make it.
And making an own chassis is always more difficult than buying one and make some holes in it.

Good work!

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...three turntables are hardly enough...


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 04:43 
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Joined: 06 Jun 2008, 18:23
Posts: 4866
Location: Australia
Close to 0.1% distortion is not a deal breaker. You can't hear under 3% of low order harmonic distortion. Once more, if it sounds good it is good. Perception is everything.

Thanks for the images and tech. info.

_________________
Projects: "Sanctum" - 12AU7 and 6AS7 direct coupled headphone amp | "retro-Oatley 6J6" - 6J6 push-pull headphone amp with OPTs | "retro-Hiraga" - Jean Hiraga Le Monster
Website: retro-thermionic


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 04:48 
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Joined: 18 Jan 2015, 15:50
Posts: 14
Thank you Max

I don't like very much the final construction , but the toroid is far to the input audio and i have one choke in a format 19" .

Here more pics of choke.


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 04:51 
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Joined: 18 Jan 2015, 15:50
Posts: 14
one more


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 04:53 
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Joined: 18 Jan 2015, 15:50
Posts: 14
And yupiii :D with less iron than copper .


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 05:16 
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Joined: 18 Jan 2015, 15:50
Posts: 14
Hi Mark ,

About distortion : motorhead :D , ( It's a joke. )

I try to say the same . If I like , I like .

Regards.


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 Post subject: Re: MCA - Son of ZCA
PostPosted: 19 Sep 2016, 11:36 
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Joined: 09 Apr 2013, 02:59
Posts: 48
Location: Germany
Hi Makjoe
you did a nice job.
I prefer self made things over bought things but it became a matter of time and the will to have better things than i can do myself.
So i bought in the parts I thought that are good for the project.

When I was at school i would also coils for my first speaker networks from wire that i got for free from a motor making company....

best regards
Stefan

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