500W PA amplifier with Limiter - Page 244 - 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 8th February 2013, 09:06 AM   #2431
diyAudio Member
 
Join Date: Jan 2013
Default Thx mile

Dear sir apex....just wanna say thx for sharing your design in to the diy comunity, 2days ago i just finish build this super clean amp and the sound is so cristal clear! I cant event heard any noise came out from the speaker. This is super! Cant wait to try H900.

Thx again mile.

Regards
  Reply With Quote
Old 8th February 2013, 03:33 PM   #2432
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by Gassanov View Post
Dear sir apex....just wanna say thx for sharing your design in to the diy comunity, 2days ago i just finish build this super clean amp and the sound is so cristal clear! I cant event heard any noise came out from the speaker. This is super! Cant wait to try H900.

Thx again mile.

Regards
Can you post pictures?
Regards
  Reply With Quote
Old 9th February 2013, 12:23 AM   #2433
diyAudio Member
 
Join Date: Jan 2013
Quote:
Originally Posted by apexaudio View Post
Can you post pictures?
Regards
Why not? this is how its look:



Few things need to be done:

1.Replace 680R with 1kohm Trimpot to adjust bias (i still heard crossover distortion when i use signal generator from my iPad).

2.Speaker Protector and Zobel 10uh,10ohm Resistor

3.Balanced Input

4.Subwoofer amp. i plan to use another b500 or HV230 as sub amp.

5.Add thermal protection.

thx again sir mile...this is the best amp I've ever build.

Regards
Attached Images
File Type: jpg IMG-20130209-00388.jpg (520.0 KB, 807 views)
File Type: jpg Complete inside view copy.jpg (628.6 KB, 693 views)
File Type: jpg Alternative Sub Amp.jpg (332.6 KB, 613 views)
File Type: jpg IMG-20130127-00350.jpg (647.5 KB, 551 views)
  Reply With Quote
Old 9th February 2013, 01:09 AM   #2434
nugroho is offline nugroho  Indonesia
diyAudio Member
 
Join Date: Jun 2009
Location: yogyakarta
Quote:
Originally Posted by Gassanov View Post
Just Use in series,

18v and 47v using two Oki 10amp transformer (ignore the CT).

Conect 18v from Oki 1 to 47 volt Oki 2 transformer and Use it As CT.

So you will get 18+47 x2

So the pin will be 18, CT and 47 from the second transformer.

Dont forget to Use HI voltage capasitor, im using rayden 10000uf/100v in series and parallel configuration.

Goodluck

Regards from bekasi

Sorry for double posting.
i'll try to understanding that, can you share the diagram connection of those 2 tranformer?


regard
  Reply With Quote
Old 9th February 2013, 03:47 AM   #2435
diyAudio Member
 
Join Date: Jan 2013
Quote:
Originally Posted by nugroho View Post
i'll try to understanding that, can you share the diagram connection of those 2 tranformer?


regard
simple drawing...hope it help
Attached Images
File Type: jpg Simple Drawing.jpg (607.7 KB, 511 views)
  Reply With Quote
Old 9th February 2013, 05:57 PM   #2436
Vostro is offline Vostro  South Africa
diyAudio Member
 
Vostro's Avatar
 
Join Date: May 2012
Location: Other side of the fence
@ Gassanov, how much power are you thinking about for sub?
Have you had a look at Mr Apex's Class D amp,
Maybe good idea, and needs less heatsinking.

Regards
  Reply With Quote
Old 10th February 2013, 12:09 PM   #2437
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by Gassanov View Post
Why not? this is how its look:



Few things need to be done:

1.Replace 680R with 1kohm Trimpot to adjust bias (i still heard crossover distortion when i use signal generator from my iPad).

2.Speaker Protector and Zobel 10uh,10ohm Resistor

3.Balanced Input

4.Subwoofer amp. i plan to use another b500 or HV230 as sub amp.

5.Add thermal protection.

thx again sir mile...this is the best amp I've ever build.

Regards
Nice amp,
Regards
  Reply With Quote
Old 10th February 2013, 09:29 PM   #2438
diyAudio Member
 
Join Date: Jan 2013
@vostro...thx for your sugestion.
I need At least twice the power of b500, maybe 500watt @ 8ohm is enough.
To be honest i dont like class d topology, mixing audio signal with square wave, its like a dithering technique in computer DAW for converting hi bit depth to lower bit depth...its sims fake to me. I know class d Efficiency is higher than class ab and also less heat, but class H seems more Efficient to me. Do you have any other suggestion?

Thx B4.

Regards
  Reply With Quote
Old 10th February 2013, 09:35 PM   #2439
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Gassanov, use H900 for sub amp.
Regards
  Reply With Quote
Old 10th February 2013, 09:44 PM   #2440
diyAudio Member
 
Join Date: Jan 2013
Thx again sir mile.

Do you have sugestion for bias trimmer? which resistor i should changes? 680 or 330?
I realy need fine addjusment here to get rid of those crossover distortion. Maybe adding 1kohm trimmer series to 220ohm like you did in SR50 studio reffrence monitor is ok to B500?

Thx B4

Regards
  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
900W H-class PA Amp with Limiter apexaudio Solid State 2999 18th August 2014 01:56 PM
500w power amplifier juneray Solid State 70 16th September 2011 04:05 PM
500W Power Amplifier JRdGreat Solid State 24 16th September 2009 09:48 AM
500W Aleph Amplifier? lscangus Pass Labs 20 19th November 2005 08:29 PM
Looking for 300-500W amplifier audioPT Solid State 3 31st August 2002 12:39 PM


New To Site? Need Help?

All times are GMT. The time now is 04:40 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