900W H-class PA Amp with Limiter

[apexaudio]

Here is PCB for APEX H750.

[engel dela pena]

apex
how can we make a balanced input for h-750
do you have a circuit
or modification

[engel dela pena]

apex
can i use D5LC20
this is 3 pin dual diode ultra fast
16 a 200v prv

[apexaudio]

Circuit for XLR (balanced) input, and level control.

[apexaudio]

Originally Posted by engel dela pena

apex
can i use D5LC20
this is 3 pin dual diode ultra fast
16 a 200v prv

U can use this diode on H900 V2 PCB.

[engel dela pena]

apex
thanks
how about psu schematic

[apexaudio]

See post #67 for PSU.

[engel dela pena]

apex
5 terminal must be from transformer the center must be ov,terminal 1,2,4,5 must be the x-former 4x40v
the other four terminal must be dc with discharge resistor,which is for +/-6o?and +/-120?

[apexaudio]

Originally Posted by engel dela pena

apex
5 terminal must be from transformer the center must be ov,terminal 1,2,4,5 must be the x-former 4x40v
the other four terminal must be dc with discharge resistor,which is for +/-6o?and +/-120?

Yes, I will post schematics soon.

[engel dela pena]

http://www.crownaudio.com/pdf/amps/grbgpapr.pdf
crown amp patented the class g
and qsc the class h
do they have the same psu?