900W H-class PA Amp with Limiter

[lidoeka]

This amp class H from Indonesia...$750.

 

[stewin]

hybrid class d amp in h mode voltage , have fun all link >>> http://www.diyaudio.com/forums/class-d/226812-my-class-d-amp-69.html#post4968835

 

[apexaudio]

H900P

 

[stewin]

H900P

please post the pcb files of h900p sir miles

 

[pallab]

which amplifier is suitable for 1000w RMS 8ohms subwoofer. 1) Apex ba1000(5200/1943 outputs)
2) Apex h900
3) Apex b500 ( bridge mode)...?????

 

[apexaudio]

which amplifier is suitable for 1000w RMS 8ohms subwoofer. 1) Apex ba1000(5200/1943 outputs)
2) Apex h900
3) Apex b500 ( bridge mode)...?????

B500 in bridge mode or D2000

 

[andrewlebon]

B500 in bridge mode or D2000

 

[thimios]

B500 in bridge mode or D2000

Apex says D2000 isn't for diy.
I can't understand why?

 

[pallab]

B500 in bridge mode or D2000

Do I need bridging adapter ??or Apex b500 has its built in TL072 bridging adapter ??if so ,then which is inverted audio input point ??point A or point B??and which will be grounded??

 

[HENDI]

Mr mile share schematic h900P

 

[pallab]

H 900 TEF

is it working??

 

[masood251]

Sir what will transformer 8..0..80;40..0..40 what ampre ?

 

[pallab]

H900P

can h900 works with 2 ohms load if I reduce rail voltage ??my plan is to build 1800watt@4 ohms ..if I connect two h900 in bridge mode and rail voltage reduced to 80 40 0 40 80 v dc .than is it ok???

 

[selgas]

Good day sir
for h900 what is the supply voltage needed fo this ckt?

thanks

 

[AndrewT]

Maximum Output voltage = sqrt (power * load *2)
Maximum Output current = sqrt (power / load *2), into a resistive dummy load !!
Allow at least 150% for a mildly reactive speaker load and upto 300% for a severely reactive speaker load.

Then add on for losses through the output stage.
Then add on for PSU sag when delivering that current.
Then look at what is required to drive a reactive load.

 

[sownel]

Greetings mr.apex sir pls share hx900 files
Thank you sir.

 

[de Ocampo]

H900P

Sir Miles,

Can you point me to the schematic of this top lay artwork?

Thank you!

Albert

 

[rizkigunawan]

Happy holliday to all...
This forum is verry helpfull. Specially thanks to mr mille...
Your dsign is unic n naturally but expert....
good job sir...
Nice..

[image][/image]

hi mr.rizqi

can you tell me, how do you drawing part symbol on top side pcb

 

[moore4889]

this my 2nd build apex h900 amp,,,almost done,,

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

 

[stewin]

hi all , why is tl072 version amp not stable . and can someone please share a stable version not using ir2117