900W H-class PA Amp with Limiter - Page 54 - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 9th May 2010, 02:45 PM   #531
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by khalsa View Post
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.
  Reply With Quote
Old 12th May 2010, 12:30 AM   #532
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
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
  Reply With Quote
Old 12th May 2010, 06:09 AM   #533
diyAudio Member
 
electra_ina's Avatar
 
Join Date: Mar 2009
Location: Near Jakarta
For my project H900..I now still waiting IR2117...If H900 completed, I will share picture my project...
Regards
  Reply With Quote
Old 12th May 2010, 08:30 AM   #534
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by andrewlebon View Post
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
  Reply With Quote
Old 12th May 2010, 02:46 PM   #535
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
[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
  Reply With Quote
Old 13th May 2010, 10:59 PM   #536
qsa is offline qsa  Germany
diyAudio Member
 
qsa's Avatar
 
Join Date: May 2007
@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 ?
Attached Files
File Type: pdf M10_Schematic.pdf (140.0 KB, 1186 views)

Last edited by qsa; 13th May 2010 at 11:02 PM.
  Reply With Quote
Old 13th May 2010, 11:32 PM   #537
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by qsa View Post
@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
  Reply With Quote
Old 14th May 2010, 12:52 AM   #538
qsa is offline qsa  Germany
diyAudio Member
 
qsa's Avatar
 
Join Date: May 2007
Quote:
Originally Posted by apexaudio View Post
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,

Last edited by qsa; 14th May 2010 at 01:08 AM.
  Reply With Quote
Old 14th May 2010, 09:05 AM   #539
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by qsa View Post
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
  Reply With Quote
Old 14th May 2010, 11:53 AM   #540
diyAudio Member
 
Workhorse's Avatar
 
Join Date: Dec 2004
Quote:
Originally Posted by qsa View Post
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
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
Nakamichi PA-7 & PA-5 Bias Setting? sourceoneaudio Solid State 6 8th March 2012 12:37 PM
900w amp module for sale nigelwright7557 Swap Meet 0 9th July 2009 11:05 PM
About a very very simple class D PA amp gaetan8888 Class D 8 13th March 2009 02:21 PM
Class-d for a 1kw PA amp MikeHunt79 Class D 4 30th December 2007 06:19 PM
200w Amp + 900w Sub = explosion? 56k Warning Daemonicus Subwoofers 2 31st May 2006 04:30 AM


New To Site? Need Help?

All times are GMT. The time now is 01:17 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2