500W PA amplifier with Limiter

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he is author of b500 but not that pcb.you have to ask from that man who made that pcb. pcb is not good and issue of protect circuit too.may be work but no one can say 100%.as diy i suggest you make b500 with apex pcb and use njw series.using more transistor never mean you got much power.b500 powerful with 4 pair.this is my view you can do as you wish.
 
he is author of b500 but not that pcb.you have to ask from that man who made that pcb. pcb is not good and issue of protect circuit too.may be work but no one can say 100%.as diy i suggest you make b500 with apex pcb and use njw series.using more transistor never mean you got much power.b500 powerful with 4 pair.this is my view you can do as you wish.
i make already B500 tef by sir willy cerna but i wish to build with attach speaker protect. and more power..thanks for your info sir rohin
 
Hi Mister Mile, I would like to hear an opinion from you, about B2000 PCB that I did, theoretically all electronic components are well conected (I hope:)), I put some decople condensers to. I would like to know, if I should put heat sinks in red and blue transistors, on VAS PCB.

Thanks in advance

Happy new year

Pozdrav
 

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Hi Mister Mile, I would like to hear an opinion from you, about B2000 PCB that I did, theoretically all electronic components are well conected (I hope:)), I put some decople condensers to. I would like to know, if I should put heat sinks in red and blue transistors, on VAS PCB.

Thanks in advance

Happy new year

Pozdrav

Yes that transistors need heatsinks and BD139 must be on main heatsink... BC639/640 wrong pins... this amp B2000 is from thread: http://www.diyaudio.com/forums/solid-state/235892-1000w-simple-pa-amplifier-65.html
Regards
 
Hello everybody! I did B500, it works, but it does not play cleanly in a small volume. But with an increase in volume plays perfectly. What to check?
 

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