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PostPosted: 13 Dec 2010, 07:30 
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The minimalist in me says that the whole BoZ, sans I/P cap and large filter caps, could be built on the sides of the brown poly output caps. There would be no attenuator in this tiny cct. All volume would be controlled from the source. My Oppo BDP-83SE has full volume control.

The usual 2 X 10,000uf caps or in BoZSE 3 X 10,000uf caps would be housed remotely as part of the remote PS. So an enclosure so tiny what would you do with it? Not sure?

BoZ on a cap!

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PostPosted: 13 Dec 2010, 11:21 
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A BoZ on a cap! I'd love to see that.
Cheers

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PostPosted: 13 Dec 2010, 17:12 
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The Jaycar 10uf brown polies are an inch or so long, fat and solid. I thought of super gluing the resistors and jFET to the boldy of the cap. No Alps attenuator with this one. Not need for me with the Oppo.

BUT I would have to have a remote box with the PS in it. OR reduce the PS to a single 100uf cap also stuck to the poly and run the unit from some batteries fitting the lot in a tiny little box! One reason I think BoZ has such huge bass is the 20,000uf of storage caps. If you drop these you get a compact BoZ but you may lose the bass weight. Compromises.

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PostPosted: 27 Dec 2010, 23:08 
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Dan wrote:
Where are the pics Mark ?

You show me yours and I'll show you mine (lel).

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PostPosted: 28 Dec 2010, 01:16 
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Go to the BoZoaC thread for the full story on the recursive BoZ on a Cap. But here is a few images. Best image of the preamp amp is it's stereo image (lel).
Attachment:
BoZoaC7.jpg
Attachment:
BoZoaC13.jpg
Attachment:
BoZoaC12.jpg
Attachment:
BoZoaC14ss.jpg


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PostPosted: 29 Dec 2010, 13:46 
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Hi Mark, looks great!

It is a shame to hide the point to point work. If you are looking to show it off you could try a translucent case: http://www.hammondmfg.com/dwg2c.htm
Image
Cheers

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PostPosted: 29 Dec 2010, 15:09 
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Yes the engines pretty but the wirings a mess. I like the cases I use they are really soild and dead.

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PostPosted: 18 Oct 2011, 14:47 
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I've seen this nice little housing from sure electronics on ebay....

http://www.ebay.com/itm/Audio-Amplifier ... 513wt_1110

I'm sure you can build the jfet boz around this unit. Sweet. I'm going to give it a go.

I've got most of the parts...


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PostPosted: 18 Oct 2011, 15:12 
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That's cheap enough. I pay $50 just for the Hammond case.

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PostPosted: 29 Dec 2012, 08:44 
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Firstly I will say that BoZ on a cap (BoZoaC) is alive and well and used on a daily basis. The two capless BoZ's I have (including BoZSE) are also working well. Currently though I am using one of two tube preamps: a 6N7 preamp or a C3m preamp.

I did have my best BoZSE tested to day and here are the results:
Firstly extremely low noise where usually there is some mains AC hash. It was exatremly clean down low. But at 0.5V in and out (unity) THD was 1.02% But response was dead flat from 10hz to 20khz. The response virtually tracked the reference test signal. 100hz noise (our mains is 50hz) was -90db down. Better than the 6N7 and C3m preamp tested the same way but only slightly better.

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