900W H-class PA Amp with Limiter

[CIPRIANDRAGOS]

What i must change in this schematic to start the fan soon because i think the fan start at more then 75 degreeses.Anyone?!
Thank You!!!

An externally hosted image should be here but it was not working when we last tested it.

 

[apexaudio]

Use 100k pot instead R1 (47k) and you can set fun start.

 

[suryadi5417]

More than just PA for diy like me......

 

[rohin]

hi suryadi please share that xlr pcb layout and supply capacitor pcb file.

 

[rohin]

hi apex sir, one question or doubt in my mind about limiter.if it h 900 then limiter should be active on 65 volt output if limiter will active on 95v (110 v dc supply) then what is advantage to use limiter? sir please tell about limiter.love you.

 

[suryadi5417]

hi suryadi please share that xlr pcb layout and supply capacitor pcb file.

For best result use BA1200 xlr input, thete is 30 hZ low cut filter...

 

[sandeep kayarkar]

Many many happy returns of the day sir Mile.

 

[apexaudio]

Many many happy returns of the day sir Mile.

Thank you

 

[rohin]

hi, please anyone tell me size of protection pcb? i could not find it.thanks.

 

[wiljj78]

i have try this design and the result is not work ...should i delete those picts ?

Ahcmad did you found some error with my layout? Let me know so I can rectify.
Regards,
Wiljj78

 

[suryadi5417]

Ahcmad did you found some error with my layout? Let me know so I can rectify.
Regards,
Wiljj78

No, your layout is not wrong and not error Mr.Will, i"m is wrong not notice the transistor you use on layout, so then pin is reverse....forgive me sir.

Regrads ...

 

[wiljj78]

No, your layout not wrong Mr.Will, i"m is wrong not notice the transistor you use on layout, so then pin is reverse....

Regrads ...

Ok thanks for the confirmation....

Regards,

 

[suryadi5417]

Working good and more powerfull....thanks Mr.Will...

 

[wiljj78]

Working good and more powerfull....thanks Mr.Will...

Good work... My B500/H900 EF I have replace VAS transistor to TO220 (MJE15033/32) to run more cooler, original MJE340/350 is very hot for me.

 

[rohin]

hi, please apex sir or some one tell me can i use mje 13007 and mje5852 in place of mje 15032 and mje 15033? please tell me alternative of these transistor.

 

[rohin]

apex h 900 toroidal 2000va +

hope finish it soon.

 

[rohin]

TECHNICAL DATA OF TORODIAL

for those who want to make their own transformer.

 

[stewin]

More than just PA for diy like me......

hi sir please post your pcb files and layout you used for your project. because it has 10bjts outputs unlike original apex which has eight pieces.

 

[rb elec]

mpro 2.2 chinese amp schematic

hi
greetings there is no schematic as i directly copied it from the Chinese amp PCB as shown..... step works well will post schematic as i am tracing the circuit now....

thanking you
Andrew Lebon

Hello Sir
Your efforts have made me your fan
I've got schematic of mpro 2.2

 

[LIEM POO]

QSC RMX 5050

for reference ........................., QSC RMX 5050