500W PA amplifier with Limiter

SUGGESTIONS ON B500 12 O/P PAIR BOARD

so here is the pcb with 12 o/p pairs ................ Miles can U plz check it ......... it does nt incorporate the protection transistor part ....... i will include it in the driver board ...... this pcb is just for checking and commenting purpose .......changes will be made as suggested....
Miles please take the lead and guide us.....

regards
sekhar
 

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  • B500_EXTENTED 12 op done.PNG
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@ apex

Sir if b500 will be bridged at 77+- vdc because. i have trafo 55 0 55 2000va and loaded with 4 ohms. i think i will end up burning my amp. i will have peak to peak voltage of 154 then try loses or voltage sag to 134vdc p-p. so the amp power would be 4489 watts at 4 ohms. if the power is continues the current 33.5A. if it is possible to do this way how many trannies needed? maybe need to used mjl4281 bec. have higher voltage rating than 2sc500.
pls. comment sir apex about this. thanks alot