500W PA amplifier with Limiter

[sekhar]

wat r the dimension of the pcb and is it a mirror img of the pcb?????????????

 

[powerflux]

wat r the dimension of the pcb and is it a mirror img of the pcb?????????????

simple test: print it on normal paper, take an opamp an test if it aligns if not: try different sizes of prints

 

[apexaudio]

wat r the dimension of the pcb and is it a mirror img of the pcb?????????????

Go to post #8. On PCB layout always is cooper side.

 

[sekhar]

ok got the pcb size thanks ........ neways with wat can i replace MJ15032 it is nt available at my place


regards
sekhar

 

[sekhar]

the pin layout of 2sc4793 & 2sa1837 r same with mje15033 & mje15032 but the collector current is a lot less for the 2sc & 2sa series wat would u recommend..............


regards
sekhar

 

[apexaudio]

the pin layout of 2sc4793 & 2sa1837 r same with mje15033 & mje15032 but the collector current is a lot less for the 2sc & 2sa series wat would u recommend..............


regards
sekhar

2sc4793/2sa1837 can be use for B500.

 

[electra_ina]

Aha....one againt.. this amplifier made in Apex....I interested to build it...Thanks alot Apex audio.., you sharing this project....
Regards,
Electra_ina

 

[apexaudio]

Aha....one againt.. this amplifier made in Apex....I interested to build it...Thanks alot Apex audio.., you sharing this project....
Regards,
Electra_ina

I hope U project will be successful.
Regards

 

[engel dela pena]

apex,
h900 is not for me
thank you for this b500
ir2117 is not yet available in my place
unless a group buy of this ir2117 ,i have no chance of having it
since b500 and h900 parts are almost same,i already buy most of h900 parts available here,i'm glad you share this b500
can you please post b500 psu pcb and schematic
and does protect and soft start of h900 can be used in b500?
thanks

 

[apexaudio]

Apex b500 psu pcb

Protect use from H900.

 

[apexaudio]

PSU PCB size: 105x70mm
Component layout was lost, use 4x 10000uF/100V snap-in caps and 35A400V bridge recifer.
Regards

 

[engel dela pena]

apex,
i have a pair of 11,000uf reservoir caps 110volts
what would be the ideal transformer sec
can i use 70-0-70ac
or what is the max sec. ac?
for b500

 

[apexaudio]

apex,
i have a pair of 11,000uf reservoir caps 110volts
what would be the ideal transformer sec
can i use 70-0-70ac
or what is the max sec. ac?
for b500

For B500 2x60vAC max, but I suggest 2x55vAC for safety operate.

 

[engel dela pena]

apex,
which is better for b500 psu
i have a pair of this 11,000uf 110v
and 4pcs. of 20,000uf 75v
should i go higher voltage
or higher uf?
please help

 

[apexaudio]

apex,
which is better for b500 psu
i have a pair of this 11,000uf 110v
and 4pcs. of 20,000uf 75v
should i go higher voltage
or higher uf?
please help

Use two caps 20,000uF/75V with transformer 1500W 2x50VAC sec for stereo.

 

[engel dela pena]

with this psu
how much power can it give me?

 

[apexaudio]

with this psu
how much power can it give me?

2x450W on 4R load

 

[engel dela pena]

can i get 2x500w on 8r load
what is the psu specs to get this power?

 

[apexaudio]

can i get 2x500w on 8r load
what is the psu specs to get this power?

H900 is 2x500W on 8R

 

[apexaudio]

APEX B250 after two years in professional use.