900W H-class PA Amp with Limiter

[lizgar]

very nice looking heatsicks, caps, and xformers...inggit aq dun ahhhh...🙂🙂🙂

sr.. were did you buy that heatsink? how much? and also the toriod transformer.. thanks

 

[mihailo]

Mile can you post pcb and dimensions?
or
Can you ask coolet to do this?
Regards

 

[coolet]

Mile can you post pcb and dimensions?
or
Can you ask coolet to do this?
Regards

look here http://www.diyaudio.com/forums/solid-state/164208-500w-pa-amplifier-limiter-60.html

post #598 😉

 

[mihailo]

Found. Thanks coolet. :-D

 

[mihailo]

Hi Apex.
Yesterday I saw your horn protection with fet IRFP in one active PA speaker of DJ Avram.
Do you have schematics and can you post some schematics for horn speaker protection? Thanks
Regards

 

[Tube Pro]

sr.. were did you buy that heatsink? how much? and also the toriod transformer.. thanks

Heatsink costs Php 420 and the Toroid is Php 3,150 converted to Philippine peso.
Bought in HK & Shenzhen (Toroids are custom made).

Thanks.

 

[andrewlebon]

hi apexaudio
greetings finished tlo 72 step driver pcb is the circuit in post 402
correct way to wire step driver to amp .Have made your supply pcb and
torridal will post pictures today after wiring up the amp

thanking you
andrew lebon

 

[A square]

hi sir,
for h900 wich drive is best tlo 72 or ir 2117.??????
wich drive can make h900 power full nd safe ?????????

 

[A square]

is anyone can give me a link or a file for transistor equivalent book ?????

 

[hpavictor]

Look ,this is a step-up module from power audio amplifier ,made in Russia

 

[ostripper]

rail traces are no where even "fat " enough to handle that power !
(see below) just a observation. I use fatter traces for just 4 pairs.
OS

 

[apexaudio]

rail traces are no where even "fat " enough to handle that power !
(see below) just a observation. I use fatter traces for just 4 pairs.
OS

I suggest to put lot of solder on rail and speaker traces and make them 'fat'.

 

[apexaudio]

hi apexaudio
greetings finished tlo 72 step driver pcb is the circuit in post 402
correct way to wire step driver to amp .Have made your supply pcb and
torridal will post pictures today after wiring up the amp

thanking you
andrew lebon

Do you correct polarity of 10uF, and use 47pF instead 0,1uF. Use schematic and check...
Regards

 

[apexaudio]

hi sir,
for h900 wich drive is best tlo 72 or ir 2117.??????
wich drive can make h900 power full nd safe ?????????

Step driver with IR2117 is the best, but if IR2117 is unavailable step driver with TL072 will work.
Regards

 

[A square]

hi

ok thanx sir .......

 

[andrewlebon]

hi apexaudio
greetings thanks for your reply tracks are made stronger by 16swg
copper wireand solder this pcb is for testing purpose only i am trying to use
your step driver circuit with this amp.Have changed .1 to 47 pf but will recheck
10 uf polarity
1 you have used tlo 72 cp low noise does cp version tlo 72 results in lower
switching noise
thanks for your reply
thanking you
andrew lebon
is your vertex amp 3 step h class supply

 

[Carolina]

Sound

Hello

Any one from those who tested this amplifier, Can they tell witch sounds better, and tell the sound quality when using.

MJL21195/MJL21196

OR

2SC5200 /2SA1943


Are there any difference?

 

[ostripper]

I suggest to put lot of solder on rail and speaker traces and make them 'fat'.

solder has 1/6 the conductivity as copper 🙁 . Better to use largest solder wick to overlay the traces or even 16 ga solid copper.
OS

 

[apexaudio]

Hello

Any one from those who tested this amplifier, Can they tell witch sounds better, and tell the sound quality when using.

MJL21195/MJL21196

OR

2SC5200 /2SA1943


Are there any difference?

Amplifier sound quality depend of circuit topology more than outputs.
Regards

 

[apexaudio]

solder has 1/6 the conductivity as copper 🙁 . Better to use largest solder wick to overlay the traces or even 16 ga solid copper.
OS

I use copper wire (1,5mm) solder overlay rail and speakers traces.