900W H-class PA Amp with Limiter

[apexaudio]

Originally Posted by khalsa

Hi apex i am using ssh70n10a mosfet it contans 70 ampere 100volt.

Blue wire in input ground. i connect direct to the PCB.
Output is clear no problem.
plz chk this out.
Regards
Khalsa

Remove blue wire, and connect wire from psu gnd to signal input cinch gnd.

[andrewlebon]

hi apexaudio
greetings amplifier rocking want to finish packing it
1 are 10 10000 uf condensers for i channel or both
2 any preamplifier with base treble for this amplifier
will mj 15024 mj15025 increase power and safety 4 pairs will sound quality
be same
3 can you please tell me torridal diameter and height dimensions powering
both channels
thanking you
andrew lebon

[electra_ina]

For my project H900..I now still waiting IR2117...If H900 completed, I will share picture my project...
Regards

[apexaudio]

Originally Posted by andrewlebon

hi apexaudio
greetings amplifier rocking want to finish packing it
1 are 10 10000 uf condensers for i channel or both
2 any preamplifier with base treble for this amplifier
will mj 15024 mj15025 increase power and safety 4 pairs will sound quality
be same
3 can you please tell me torridal diameter and height dimensions powering
both channels
thanking you
andrew lebon

1 PSU PCB with 8x10000uF is for stereo
2 I suggest only power amplifier in case, and preamp, mix, x-over... in another case.
3 Torridal diameter 200mm height 80mm for stereo amp in 2U case.
Regards

[apexaudio]

[QUOTE=
will mj 15024 mj15025 increase power and safety 4 pairs will sound quality
be same
[/QUOTE]
Yes sound quality will be same (best sounding PA amp I ever heared)
Regards

[qsa]

@apexaudio

how do you think about this simple linear Class H BJT Step driver circuit is this PA Amp ?

is it possibile to use this linear Class h Step Driver in quasicomplementary output stage too ?

without known problems compare to switching Class H Step Driver with IR2117 IC and Mosfets ?

[apexaudio]

Originally Posted by qsa

@apexaudio

how do you think about this simple linear Class H BJT Step driver circuit is this PA Amp ?

is it possibile to use this linear Class h Step Driver in quasicomplementary output stage too ?

without known problems compare to switching Class H Step Driver with IR2117 IC and Mosfets ?

Try to find schematics or service manuals of some commercial PA amplifier with quasicomlementary nmos output stage (AB or H class), if this amplifier exist you can see solutions for your amp.
Regards

[qsa]

Originally Posted by apexaudio

Try to find schematics or service manuals of some commercial PA amplifier with quasicomlementary nmos output stage (AB or H class), if this amplifier exist you can see solutions for your amp.
Regards

yes this Amplifier exist, have working some years ago for this company and sold a lot of pcs. from this model to european PA clients,

but heavy analaog amplifier is since 3 years obsolet in market by european clients.... and my previous factory dont have since today SMPS, this model dont like continous maximum Subbass output power, output devices can failed.

I dont like BJTs in output stage against bad experience, often different BJT amps failed with continous high output power

with hundreds of Class D and 50 pcs. sample NMOS amps +/- 100 V Rail no known problems compare to BJTs amps

very popular is class D in market.....class H with SMPS is popular too,... but not so much like class D

to find PRO AUDIO quasicomlementary nmos output stage (AB or H class) is really impossibile often amplifiers use BJT because this devices much more cheaper to produce amplifier,

[apexaudio]

Originally Posted by qsa

yes this Amplifier exist, have working some years ago for this company and sold a lot of pcs. from this model to european PA clients,

but heavy analaog amplifier is since 3 years obsolet in market by european clients.... and my previous factory dont have since today SMPS, this model dont like continous maximum Subbass output power, output devices can failed.

I dont like BJTs in output stage against bad experience, often different BJT amps failed with continous high output power

with hundreds of Class D and 50 pcs. sample NMOS amps +/- 100 V Rail no known problems compare to BJTs amps

very popular is class D in market.....class H with SMPS is popular too,... but not so much like class D

to find PRO AUDIO quasicomlementary nmos output stage (AB or H class) is really impossibile often amplifiers use BJT because this devices much more cheaper to produce amplifier,

Development amplifier from zero is difficult, I suggest to use reable solution from brands, I am not sure that the prise is a reason to not use that topology by brands.
Regards

[Workhorse]

Originally Posted by qsa

to find PRO AUDIO quasicomlementary nmos output stage (AB or H class) is really impossibile often amplifiers use BJT because this devices much more cheaper to produce amplifier,

EAW and ECLER uses NVMOS in their amplifiers