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destroyer X 30th September 2005 12:51 AM

Bora is a nice guy from Serbia - Yugoslávia
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We have been talking for long time, and i asked him to let me post some schematics.

Those circuits i did not assemble, so, i cannot evaluate, as not hearing i have not this condition.

As Bora is experienced, i suppose he had constructed some prototypes.

Now, presenting Bora to forum friends.



destroyer X 30th September 2005 12:52 AM

Here is the home page of his site.
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The adress are there if you want to visit.



destroyer X 30th September 2005 12:54 AM

I made my own choice related his schematics.
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One is bridged, very good to use as subwoofer, as can produce a big voltage swing.

I will post in PDF because of quality.



destroyer X 30th September 2005 12:57 AM

This other amplifier, the Delta, is a new design
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You can see that is dated of September.



destroyer X 30th September 2005 12:59 AM

This third one...the last one for a while, may be interesting to a lot of guys
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Because there are many that loves simetrical amplifiers, in special this one that have simetrical input.

Bora will be tracking, to answer the questions that may appear.



mwmkravchenko 30th September 2005 01:07 AM

Nice to see some new designs!
Thank you Carlos and Bora.


destroyer X 30th September 2005 01:19 AM

Wonderfull is to receive your visit...good when the first one is someone
That we really Kravitchenko.

This thread started with luck!



jaycee 30th September 2005 05:09 AM

The Delta is rather... interesting!!

The catch is the BF469/470 is obsolete now. What would you suggest in replacement ? I've only ever found Japanese devices (notably by Toshiba and Sanyo) as close to these.

destroyer X 30th September 2005 06:30 AM

Yes, they are obsolete now a days Jaycee, and will be a little
confused to find a good replacement, because the samples i have in my home, measured 150 of gain, showing me that it is a very low gain unit.... as this small value of gain may had be used to calculate the entire amplifier gain, a good replacement will need reduced gain too....well, Bora may have solution.

Bora place is advanced related New York time line.... around 4 hours i imagine, soon he will be here to suggest some replacement.

The first package of amplifiers Bora sent me, have 25 units....i believe that may have one or two more amplifiers that will interest you.

Amplifiers will be posted in groups of 3 units, a very good idea from Bora, this way, all comments will be around the last post 3 units.... a very few comments and questions will appear related older posted units.

Having curiosity Jaycee, try to visit his home page, where you will have more options.



pinco 30th September 2005 07:33 AM

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I made his Studio amplifier and Omni protection board, Studio is excellent amplifier, very nice sound and superb stability, it is my first diy amplifier, and I am very pleased, Thanks Bora!!!,


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