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
Hi,Mr.Mile
This my H900, in the process of testing, the results were extraordinary.
Thank Mr.Mile!
This my H900, in the process of testing, the results were extraordinary.
Thank Mr.Mile!
Attachments
Last edited by a moderator:
Nice work, can you post some more informations.
MJE340/350 in VAS must have heatsinks.
Thank's for picture in high resolution.
Regards
MJE340/350 in VAS must have heatsinks.
Thank's for picture in high resolution.
Regards
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
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
Old days
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.🙂
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.🙂
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 .....
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 .....
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
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
hi apexauio
greetings thanks for your offer to share complete schematic of
vertex already made 3 modules of h 900 will make coolet pcb today
i like your amps
thankiing you
andrew lebon
greetings thanks for your offer to share complete schematic of
vertex already made 3 modules of h 900 will make coolet pcb today
i like your amps
thankiing you
andrew lebon
OH..
thank u sir for vertex amps schematic.
it means more power.
more experiences to share
more things to learn ..
a very big thanx to u sir ...
thank u sir for vertex amps schematic.
it means more power.
more experiences to share
more things to learn ..
a very big thanx to u sir ...
hi apexaudio
greetings today tried to test vertex with 70 0 70 dc voltage rails
1 negative side zener showing only 16 volts should be 33 volts
2 56 volts positive dc on output 18 k resistor heating
any clues can you please share complete circuit of vertex so i can complete it
diodes used are1N5399 is it ok.hoping you can please help me out with schematic
thanking you
andrew lebon
greetings today tried to test vertex with 70 0 70 dc voltage rails
1 negative side zener showing only 16 volts should be 33 volts
2 56 volts positive dc on output 18 k resistor heating
any clues can you please share complete circuit of vertex so i can complete it
diodes used are1N5399 is it ok.hoping you can please help me out with schematic
thanking you
andrew lebon
i am in for vertex . i would like to build such a massive amp. having completed b500 i feel confident . kindly share vertex's details .
regards
sekhar
hi apexaudio
greetings please can you help me out negative 33 volt zener
showing only 16 volts
1 18 k resistor getting hot can you tell me if vertex schematic is complete i
am not making vertex step regulator want to test amp in ab class only so
can you help me out if you say circuit is complete then i can find fault
hoping for your help
thanking you
andrew lebon
greetings please can you help me out negative 33 volt zener
showing only 16 volts
1 18 k resistor getting hot can you tell me if vertex schematic is complete i
am not making vertex step regulator want to test amp in ab class only so
can you help me out if you say circuit is complete then i can find fault
hoping for your help
thanking you
andrew lebon
R86 is 18k/5W, and with +/-70V DC use for R6 and R7 4k7/2W instead 10k/2W, can you post pictures?
hi apexaudio
greetings thank you very much for telling me wattage of resistances this was my doubt all along will post pictures for u to see
i love your designs making coolets pcb
thanking you
andrew lebon
greetings thank you very much for telling me wattage of resistances this was my doubt all along will post pictures for u to see
i love your designs making coolets pcb
thanking you
andrew lebon