500W PA amplifier with Limiter

B500 TRIPLE DARLINTON,
neet to put 10k pot and 47r base to emmitter to drivers.

pcb size 70mm by 230mm.
 

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For BIAS setup R22 should be 1k2 instead 680R for triple darlington output stage, and R23 is correct 330 ohms.
Q5 (MJE340) must be on main heatsink with outputs.
Predrivers MJE340/350 can use smal heatsinks, but no need.
Regards

hi apex sir,
is this r22, r23 value correct for triple darlington.

in h900 thread u said post no 2060 image value is correct, both values are different values, pls verify this.

only I'm 100percent success with Ur amps,
 
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HI APEX SIR ,
pls verify this gnd wiring.

with full volume, no input signal provided, the hum is coming through speakers , what is the solution?

i checked some professional amplifiers with full volume without input signal and no hum coming through speakers.
 

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hi apex sir,
i did what u said in post 2016, now no hum.

my camera focusing is little problem, that's why the images are smudge.
i used these tools to make the casing, taper,taper hande,mini circular saw,drill machine, jigsaw mashine,c clamp.
thanks.
 

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