900W H-class PA Amp with Limiter - Page 93

apexaudio · 30th October 2010, 05:35 PM

Quote:

Originally Posted by andrewlebon

hi apexaudio
greetings vertex driver pcb output transistors on another pcb
1 can BC546 BC556 BE USED IN PLACE OF BC560 BC55O have BC550C but no
BC560
THANKING YOU
ANDREW LEBON

You can use BC546/556 instead BC550/560, and use TL071 or LF411 no need for dual OP amp for single channel DC servo, with dual OP amp second OP amp is for thermal protect.
Regards

achenk · 01:52 PM

Hi,Mr.Mile

This my H900, in the process of testing, the results were extraordinary.

Thank Mr.Mile!

apexaudio · 30th October 2010, 08:56 PM

Nice work, can you post some more informations.
MJE340/350 in VAS must have heatsinks.
Thank's for picture in high resolution.
Regards

apexaudio · 30th October 2010, 08:59 PM

Don't forget to conect protect GND to main PSU GND.

andrewlebon · 31st October 2010, 06:14 AM

hi workhorse
greetings well i have no pcb software all drawn by hand then corel
draw once vertex is working brand new pcb everything on it proffessional look
thanking you
andrew lebon

Workhorse · 31st October 2010, 06:36 AM

Quote:

Originally Posted by andrewlebon

hi workhorse
greetings well i have no pcb software all drawn by hand then corel
draw once vertex is working brand new pcb everything on it proffessional look
thanking you
andrew lebon

This was my first pcb i had made that too first time for my first class-H back in 2006 with a cheap traxmaker software.

angeltech · 31st October 2010, 08:20 AM

Hello Workhorse,

Nice PCB, Looks very professional!

I love it man!!!

dexter2003 · 4th November 2010, 04:32 PM

Hello ,
apex , can you tell me witch is the value of c39 , c40 ,c32,c36,c35,c34, c27, on vertex2500
and maybe the power disipation of r69 r70,R6 ,R88, And a more comun replacement for her156 ,bav20 , and anather thing can i replace 1n4744 with anu 15v zener diode ?
I'm asking this questions because i will make the pcb for this one.
Can vertex2500 be drive on 2 ohm loads? that will be more than 45Amps throught the speaker , and more than 7 amps trought one tranzistor , i think it excedes SOA capability .....

andrewlebon · 6th November 2010, 09:31 AM

hi apexaudio
greetings can you please tell me wattage of R 86 18 KILO OHMS
from emitter of T7 to emitter of T20
THANKING YOU
ANDREW LEBON

apexaudio · 6th November 2010, 02:47 PM

Ok, I will share complete schematic of 'vertex' amp, but I suggest to start with H900.

30th October 2010, 08:56 PM	#923
apexaudio diyAudio Member Join Date: Feb 2010 Location: Serbia	Nice work, can you post some more informations. MJE340/350 in VAS must have heatsinks. Thank's for picture in high resolution. Regards __________________ http://www.facebook.com/APEXaudio.MileSlakovic

30th October 2010, 08:59 PM	#924
apexaudio diyAudio Member Join Date: Feb 2010 Location: Serbia	Don't forget to conect protect GND to main PSU GND. __________________ http://www.facebook.com/APEXaudio.MileSlakovic

6th November 2010, 02:47 PM	#930
apexaudio diyAudio Member Join Date: Feb 2010 Location: Serbia	Ok, I will share complete schematic of 'vertex' amp, but I suggest to start with H900. __________________ http://www.facebook.com/APEXaudio.MileSlakovic

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31st October 2010, 06:14 AM	#925
andrewlebon diyAudio Member Join Date: Feb 2008	hi workhorse greetings well i have no pcb software all drawn by hand then corel draw once vertex is working brand new pcb everything on it proffessional look thanking you andrew lebon

31st October 2010, 08:20 AM	#927
angeltech diyAudio Member Join Date: Feb 2008	Hello Workhorse, Nice PCB, Looks very professional! I love it man!!!

4th November 2010, 04:32 PM	#928
dexter2003 diyAudio Member Join Date: Mar 2008	Hello , apex , can you tell me witch is the value of c39 , c40 ,c32,c36,c35,c34, c27, on vertex2500 and maybe the power disipation of r69 r70,R6 ,R88, And a more comun replacement for her156 ,bav20 , and anather thing can i replace 1n4744 with anu 15v zener diode ? I'm asking this questions because i will make the pcb for this one. Can vertex2500 be drive on 2 ohm loads? that will be more than 45Amps throught the speaker , and more than 7 amps trought one tranzistor , i think it excedes SOA capability .....

6th November 2010, 09:31 AM	#929
andrewlebon diyAudio Member Join Date: Feb 2008	hi apexaudio greetings can you please tell me wattage of R 86 18 KILO OHMS from emitter of T7 to emitter of T20 THANKING YOU ANDREW LEBON

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