500W PA amplifier with Limiter

[desertstorm]

nice work desertstorm

thank's khalsa regards

 

[wiljj78]

PIC. OF MY B500 TEF PROJECT..THANK YOU SIR APEX AND SIR WILLY...

Congrats.....
Don't forger to install TO-220 heat sink on MJE's transistors for safety...😉
Regads,

 

[desertstorm]

Congrats.....
Don't forger to install TO-220 heat sink on MJE's transistors for safety...😉
Regads,

ok sir willy thanks for your info. god bless..

 

[mihailo]

Nice work!
Can you teel us on what voltage is amp working?
Have you use MJE15032/33 or 2SC/2SA transistors?
Which are those instead of MJE340/350?
Regards

 

[desertstorm]

Nice work!
Can you teel us on what voltage is amp working?
Have you use MJE15032/33 or 2SC/2SA transistors?
Which are those instead of MJE340/350?
Regards

sir for testing im using +/-42V DC RAIL sound good but im going to change my power supply to 50-0-50 AC tomorrow..sir im using mje15032/33 regards.

 

[jeugeut]

hi rizqi can u send me pcb n layout jeugeut@yahoo.co.id

 

[desertstorm]

APEX B500 TEF PROJECT.

ONCE AGAIN THANKS TO SIR APEX AND SIR WILLY MY B500 TEF... GREAT SOUND ...

 

[desertstorm]

hi rizqi can u send me pcb n layout jeugeut@yahoo.co.id

frnd..go to post#2570 regards..

 

[wiljj78]

ONCE AGAIN THANKS TO SIR APEX AND SIR WILLY MY B500 TEF... GREAT SOUND ...

Congrats.....
Whats your rail voltage now??? and how's the performanace of APEX NE555 protect?

 

[desertstorm]

Congrats.....
Whats your rail voltage now??? and how's the performanace of APEX NE555 protect?

sir voltage rails +/-72Volts dc and ne555 working good sir apex and sir willy thank you so much for great pa amp. god bless..

 

[wiljj78]

sir voltage rails +/-72Volts dc and ne555 working good sir apex and sir willy thank you so much for great pa amp. god bless..

You're welcome and great job....
Regards,

 

[marestiani]

Sir if i use apex protec in b500 how to mount tip 31 on heatsink if i change bd 241 with tip 31? do i have to use an isolator like usual or not because i read it function as temperature sensor

 

[ekoinsky]

This is the best amp that I have ever made .. 🙂
I changed the layout slightly to match with my box amps and PCB that sold in the market.
photo by 6TR final apex b500TEF
combined apex protect and mixer for the front panel.
thanks mr. mile and fellow DIYer's
regards.. 🙂

 

[zandals]

NSL 32

LDR + LED instead NSL32

hai mr. apex, what colour to use for LED and how size the LDR ???
thanks very much

 

[apexaudio]

This is the best amp that I have ever made .. 🙂
I changed the layout slightly to match with my box amps and PCB that sold in the market.
photo by 6TR final apex b500TEF
combined apex protect and mixer for the front panel.
thanks mr. mile and fellow DIYer's
regards.. 🙂

Nice work,
Regards

 

[LIEM POO]

Password B500 TEF is rizqy1234

 

[gsedi]

http://www.diyaudio.com/forums/atta...-amplifier-limiter-apex-triple-darlington.jpg

how the value of R22/23, if the final 8 pair?

greetings

greetings

 

[gsedi]

how the value of R22/23, if the final 8 pair

greetings

 

[AndrewT]

R22/23 set the bias voltage.

This bias voltage drives quiescent current through the following stages.

You adjust the bias voltage until you achieve the desired quiescent conditions.

 

[gsedi]

R22/23 set the bias voltage.

This bias voltage drives quiescent current through the following stages.

You adjust the bias voltage until you achieve the desired quiescent conditions.

oke, tank you

for the final, what can 2S5200/2SA1945 replaced with 2SC3858/2SA1494 (MT200)?