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Old 18th June 2010, 11:55 AM   #11
mihailo is offline mihailo  Serbia
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Regards Mr.Vedmitraa.
I will send you until tomorrow, pcb,schematic, and eagle 5.6 fajl of audio splitter if you want to change something. I post that picture to show my friend solution to his problem of connecting 6 amplifiers on one output mixer.
Sorry for my bad English,i use google translator.
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Old 18th June 2010, 12:00 PM   #12
AndrewT is offline AndrewT  Scotland
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the Thread title is 200W PA amplifier.

Your first post says "200W amplifier"
and goes on to say "200W ClassAB amplifier".

That's thrice you claimed 200W from a max of +-60Vdc.

Do you really expect the VAS to be able to drive a 4pair output stage direct?
What is the maximum current that the VAS and output stage can supply?
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regards Andrew T.
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Old 18th June 2010, 12:12 PM   #13
mihailo is offline mihailo  Serbia
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This amplifier works find for me. I even have smaller pcb, that was my older design, 5 years still working fine.
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Old 18th June 2010, 05:53 PM   #14
mihailo is offline mihailo  Serbia
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Default PA 200w

Pictures of the same amplifier in older design pcb. This is cheap fully working amplifier.
Attached Images
File Type: jpg Amplifier 29.12.'07 23[800x600].jpg (103.3 KB, 604 views)
File Type: jpg Amplifier 29.12.'07 26[800x600].jpg (100.1 KB, 582 views)
File Type: jpg Amplifier 03.jpg (101.6 KB, 570 views)
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Old 18th June 2010, 05:59 PM   #15
mihailo is offline mihailo  Serbia
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More pictures of my amplifier, and older designed pcb for same components(parts).
Attached Images
File Type: jpg 4.jpg (57.8 KB, 546 views)
File Type: jpg 1.jpg (38.6 KB, 490 views)
File Type: jpg plocica 1 [800x600].jpg (49.8 KB, 345 views)
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Old 19th June 2010, 03:04 AM   #16
mihailo is offline mihailo  Serbia
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Schematic of Audio splitter. I will attach PCB and part list soon.
Rergards
Attached Images
File Type: jpg audio breakout schematic.jpg (65.7 KB, 424 views)
File Type: png Audio Splitter.png (31.1 KB, 383 views)
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Old 19th June 2010, 06:18 AM   #17
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Hi Mihailo, Thank you for circuit diagram of audio splitter and P.C.B. design of 200 watts.Still waiting for circuit diagram and component list of 200 watts though one can note down component list from layout.few questions - there is no bypass capacitor in input of splitter.what is input and output voltage for splitter.My personal experience is that ground to positive devices do not work smoothly with negative-0-positive devices or amplifiers so can this circuit be converted into negative-0-positive circuit . one more question can a tone control be added in each output to get separate frequencies for each amplifier. wishing you all the best for your exams thanking and waiting for your reply. Vedmitrasharma from city of Tajmahal.
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