500W PA amplifier with Limiter

B500 Progress....

Good Day...

Have all components....busy trying to find proper heatsink for amp...

Cheers....
macd:):):)
 

Attachments

  • IMG_20190117_130931.jpg
    IMG_20190117_130931.jpg
    421.1 KB · Views: 624
Over current Protect....

Over current detection for PSU 7

Good Day Kandimba,

Greetings for the New Year. Hope all is well ???

I see now that B500 protect is different from other schematics.... I will use PA Protect from H900 design for my protection. Just have to build separate bridge rectifier and Cap filters and soft start.... no problem....PSU7 would have been nice since all is on one PCB....

Thanks a lot for your response. Will keep you posted on my progress...

Regards,
macd:D:D:D
 
I just gone went through the the whole thread and got quite a interested in making this amplifier. I have an 80-0-80vac 1600va transformer and I would like to make b500 TEF or b600 TEF stereo at 4ohms for PA use. what upgrades or changes can I make on the following?

>number of pairs of outputs per channel
>r24 and r25 in the case of b500
>bias circuit (r23 r24 and q5)
>any other upgrades if any.

Thanks and regards