| Idefixes |
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)
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.
The main board with Mcap soldered
This the past 2 week i began the housing
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.
The next step his finishing the house by varnishing the wood front and rear faces........
Marc |
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| Netlist |
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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| Idefixes |
| 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 :
The capa are BC C154 22000µF/40V, i have 14 of them in the amp
Marc |
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| 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 |
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| Idefixes |
| 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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| Idefixes |
I continued my work on my Bosoz. I rebuilt the front and the back face plate with exotic wood
Marc |
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| 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 |
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| Idefixes |
| 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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| promitheus |
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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| JasonL |
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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| PsykoK |
Hi everybody,
Nice work Idefixes for this preamp/amp
Don't forget that you have to make all my wood front panel :D
If someone is interested to have the eagle files from this BOSOZ, I can send it to him by mail. |
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| JasonL |
hey i would like them files for the boz.
jasonleaman @ shaw. ca |
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| Idefixes |
| quote: | Originally posted by promitheus
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 .
;) |
Le little blue transformer is for Pulse Power Switch
Marc |
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| Bricolo |
| Vraiment superbe!:cool: |
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| stappvargen |
| Beautiful work Marc! |
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| joensd |
PsyKok, I´ll gladly take the offer.
Please send to : mrjensdee@web.de
Cheers
Jens |
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| Idefixes |
New work this few days : wood tinting befor glossy varnishing
Marc |
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| loovet |
Idefixes, where did you buy those lovley heatsinks?
Price? Model?
BR
/loovet |
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| PsykoK |
He buys these lovely heatsinks by www.seem-semrac.fr!
For the price and model , Idefixe will ask you about.
Alex |
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| Idefixes |
| quote: | Originally posted by loovet
Idefixes, where did you buy those lovley heatsinks?
Price? Model?
BR
/loovet |
I have 4 Heatsinks naturaly anodized (200x200x40mm) on these amp (Ref Sem : Co270P). The price was 110€ including shipping france-france
Marc |
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| audio_cf |
Could you please also send the eagle files to me
Carl-Fredrik.Sundstrom(a)ericsson.com |
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| PsykoK |
For the eagle file you can now dl it from my FTP: BOSOZ Eagle
Alex |
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| Idefixes |
After 3 varnish layer. The bosoz will have the same traitement
Marc |
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| Luke |
Hi,
I have some 2sk1530 and 2sj201 and wondering if they would work on this amp, would save a bit of money and I suspect they would work.
Also struggling to get input fets over here or australia, anyone know of readily available substitutes?
cheers luke |
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| Idefixes |
| quote: | Originally posted by Luke
Hi,
I have some 2sk1530 and 2sj201 and wondering if they would work on this amp, would save a bit of money and I suspect they would work.
Also struggling to get input fets over here or australia, anyone know of readily available substitutes?
cheers luke |
Luke,
I've bougth end 2003 the recommended FEt and my 5 amp carte are implanted after FET matching.
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| Idefixes |
If its possible.........Yes Thanks |
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| JasonL |
Please pm me or email me
jasonleaman @ shaw .ca |
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| Variac |
Anyone going to make these boards? Looks like a good time for a
BSOZ Group Board Buy!!!! I need a set....... |
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| Luke |
Hi Idefixes,
nice boards. I will try to use what I allready have as mosfets are expensive.
Are the pots for quiescent current? |
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| Idefixes |
My 5ch amp finished, i work on my bosoz. It's near the end to. All électronics are finished. I m working on case, and wiring.
I have to replace the wood bottom with un steel one.
Marc |
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| promitheus |
Very nice work you have done so far.
Realy like the wood work you did. |
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| Idefixes |
Drilling, ever and aver drilling that's one of the secrets on Diyaudio
Marc |
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| promitheus |
Tell me about it.
I thought after a while that it had only with metal work to do and nothing with electronics. :xeye:
but at the end you make something nice and you forget about the hard work. |
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| Idefixes |
| quote: | Originally posted by promitheus
Tell me about it.
I thought after a while that it had only with metal work to do and nothing with electronics. :xeye:
but at the end you make something nice and you forget about the hard work. |
Nothing to add, you say all what must be say. In this project most time is spend in building the case......electronic take about a day only.
Marc |
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| Idefixes |
After some more painting works, connectics take place on the rear panel. Definitif PS wiring take place too.
Marc |
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| Idefixes |
I finished yet the definitif wiring of the bosoz
Some more détails pictures
It's too late in the evening to have a first listening, so it's for tomorow. I have to finish top screwing and varnishing too
Marc |
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