900W H-class PA Amp with Limiter

[khalsa]

HI soerdjanto your 2sa1943 collecter is attached with +ve side on mur1620 its wrong you will attached -ve side pls check schematic

 

[Julio25]

power amp

anyone have a pcb component side for an xlr input?ive seen it in the thread but i cant remember where.

 

[QQ12e5k1]

Is this correct Sir??

Regards

 

[apexaudio]

Is this correct Sir??

Regards

R24 and R25 must be connect to +/-MV, add BAV21 in paralel with 100pF on drivers and it can work.
Regards

 

[engel dela pena]

another H900 revolution,
this v. is good easy to find parts
how about the switching
will this be a better one?

 

[QQ12e5k1]

R24 and R25 must be connect to +/-MV, add BAV21 in paralel with 100pF on drivers and it can work.
Regards

Like this???
With only one mosfet on step driver,how much final transistor can be use???

Regards

 

[apexaudio]

Like this???
With only one mosfet on step driver,how much final transistor can be use???

Regards

This is OK, 4 pairs is maximum with this topology, for more outputs you must add predrivers (triple darlington) and more step mosfets.
Regards

 

[QQ12e5k1]

This is OK, 4 pairs is maximum with this topology, for more outputs you must add predrivers (triple darlington) and more step mosfets.
Regards

Ok..thank you Sir....
Regards

 

[engel dela pena]

sir mile,
if two mosfet should be use in 4 pair of output,how many mosfet in 6 pair,8 pair,how to determine step drive mosfets?

 

[apexaudio]

sir mile,
if two mosfet should be use in 4 pair of output,how many mosfet in 6 pair,8 pair,how to determine step drive mosfets?

Use 2, 3 or 4 IRF540 mosfets, IRF2807 can be use for 4 outputs.

 

[gordondean]

sir apex audio, which is beter for drive subwoofer, h900 or b500 BTL

thank you!

 

[mkubawat]

hi soerdjanto
what is the news about h900 with speaker protector
i'm waiting ..................

 

[mkubawat]

dear diyers
i'm new here

 

[ravpreet420]

h900 with speaker protector
already on trial, and the results are okay

An externally hosted image should be here but it was not working when we last tested it.

Sir Plz send pcb layout pdf file

 

[irvynejay]

@ ravpreet420 pls be aware that this design have some error example look pin 5 of the ic ne5532

try to compare with this

 

[Julio25]

@irvynejay,sir did you build the 700 watts leach amp?im planning to build it too for my 2 18 inches sub.what do you think is good for sub?h900 by apex or the leach 700 watts?thanks sir.

 

[Julio25]

@irvynejay..sir did you build the 700 watts leach amp?im planning to build it for my sub 2 pcs 18 inches.what do you think is good for 18 inches sub,h900 by apex or the leach amp?

 

[irvynejay]

yes i did build it leach 700w but in 2 r witch is not good ,so far H900 is more clear and punchy to me

 

[ravpreet420]

yes i did build it leach 700w but in 2 r witch is not good ,so far H900 is more clear and punchy to me

Thanx irvynejay

 

[romulo_rosil]

h900

boss apex, I have available power supply 97-48-0-48-97, can iI use that power supply for h900?