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Old 22nd December 2003, 08:03 AM   #1
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Default Bosoz in progress

2 Months ago, after un discution with a friend of mine i decided to build with his help a Bosoz to drive my DIY-amp (in construction to). The Amp will be connected later to 2 Back Horn speakers (with Fostex drivers).

The first i made is reading the Nelson Pass PDF concerning the Bosoz as all topics i can find on diy audio to.
Than i begun to drawing on my computer some schemes from it while my friend build my the 2 Pcb : power supply and main board (both are modified to own BC056 and munforf Mcap capa)

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Click the image to open in full size.

I purchase to Digikey teh parts i need. Mundorf and BC056 came for germany and france as the tansfomater.

The mainbord and the power supply board without Mcap capa.

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The main board with Mcap soldered

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This the past 2 week i began the housing

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I needed to modify the implantation because i wanted to have the same cable length for +/-/ground. The two board will be separated with a 3mm thick steel plate.

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The next step his finishing the house by varnishing the wood front and rear faces........


Marc
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Old 22nd December 2003, 07:30 PM   #2
Netlist is offline Netlist  Belgium
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Fantastic work Marc

It's as Zen as Zen can be. Well almost, we had the lightbulbs.
Keep us informed with nice pictures.
What power amp will you build?

/Hugo
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Old 22nd December 2003, 08:38 PM   #3
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Quote:
Originally posted by Netlist
Fantastic work Marc

What power amp will you build?

/Hugo
Thanks Hugo.
The first step for amplification is a 5x50W Zenquito evolution from Jean Marc Plantefève ("the french Nelson Pass). It's a class AB amp. base on Hitachi transistor. Here are somme pics of my amp in build process (It's not yet finished) :

The Pcb :

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The capa are BC C154 22000µF/40V, i have 14 of them in the amp

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Marc
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Old 23rd December 2003, 08:12 AM   #4
Netlist is offline Netlist  Belgium
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It all looks very neat.
Did you see there are some threads discussing the Zenquito on this forum too?
They are current feedback amps, no?
I tried something for the AlephX with CF but due to lack of time and knowledge it has to rest for a while.

/Hugo
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Old 23rd December 2003, 08:34 AM   #5
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Quote:
Originally posted by Netlist
It all looks very neat.
Did you see there are some threads discussing the Zenquito on this forum too?
They are current feedback amps, no?
I tried something for the AlephX with CF but due to lack of time and knowledge it has to rest for a while.

/Hugo
No i didn't see. The zenquito is the first step of amp building. After a few month it will be operating only on my Home cinema amp through preout. I am actually studiing a Aleph X (45-50w) version to work with bosoz.

Marc
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Old 4th January 2004, 09:36 PM   #6
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I continued my work on my Bosoz. I rebuilt the front and the back face plate with exotic wood

Click the image to open in full size.

Click the image to open in full size.

Marc
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Old 4th January 2004, 09:45 PM   #7
joensd is offline joensd  Germany
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Congrats! That´s definitely one of the most beautiful and tasteful designed amps around here!
PCB artwork is great as well.
Did you do it with Eagle?
And if so, would you mind sharing the eagle files with us?

Cheers
Jens
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Old 4th January 2004, 09:54 PM   #8
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Quote:
Originally posted by joensd
Congrats! That´s definitely one of the most beautiful and tasteful designed amps around here!
PCB artwork is great as well.
Did you do it with Eagle?
And if so, would you mind sharing the eagle files with us?

Cheers
Jens
Thanks
The PCB design was made bay a freind of mine effectivly with eagle. My friend's name on DIYAUDIO is PsyKoK. Ask him he has all the files and had do a really nice work on these bosoz PCB.

Marc
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Old 4th January 2004, 11:11 PM   #9
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Very good work.
I really like your cases with the wood and everything.
what is that small blue transformer behind the toroid for in the preamp?

Really cool .
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Old 4th January 2004, 11:33 PM   #10
jleaman is offline jleaman  Belgium
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ideaFixes

I have downloaded all your pictures and will be putting them into my Gallery on my main page. Hope you don't mind.. if any one else wants to host there pictures please let me know..

thanks..
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