900W H-class PA Amp with Limiter - Page 53 - 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 5th May 2010, 10:14 AM   #521
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by electra_ina View Post
Thanks alot Apex...Yes I undestood..If each trafo 10 Ampere, what 2 trafo will be 20 Ampere or 84vac x 20 A = 1680 watt??
Pozdrav..
No 2 trafo will be 10A, but 168vac and you have 1680watt.
  Reply With Quote
Old 5th May 2010, 10:19 AM   #522
diyAudio Member
 
electra_ina's Avatar
 
Join Date: Mar 2009
Location: Near Jakarta
Quote:
Originally Posted by apexaudio View Post
No 2 trafo will be 10A, but 168vac and you have 1680watt.
Hvala unapred...
One againt..thanks so much...I understood...
Next..I will try B500 plus step up driver TL072 to H900...
I'm sorry.. too much "stupit" questions...

Regards..
  Reply With Quote
Old 5th May 2010, 10:23 AM   #523
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by electra_ina View Post
Hvala unapred...
One againt..thanks so much...I understood...
Next..I will try B500 plus step up driver TL072 to H900...
I'm sorry.. too much "stupit" questions...

Regards..
Nema problema,
There is no stupit question
  Reply With Quote
Old 5th May 2010, 10:26 AM   #524
diyAudio Member
 
andrewlebon's Avatar
 
Join Date: Feb 2008
hi apexaudio
greetings is it worthwile to put 4 more pairs will power increase
in 4 ohms for 1200 watt in 4 ohms what do we do
thanking you
andrew lebon
  Reply With Quote
Old 5th May 2010, 11:06 AM   #525
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by andrewlebon View Post
hi apexaudio
greetings is it worthwile to put 4 more pairs will power increase
in 4 ohms for 1200 watt in 4 ohms what do we do
thanking you
andrew lebon
I suggest to build complete amplifier, and use for a time. Adding 4 pairs will increase safty.
  Reply With Quote
Old 8th May 2010, 05:49 PM   #526
khalsa is offline khalsa  India
diyAudio Member
 
Join Date: Dec 2007
Send a message via Yahoo to khalsa
Talking Hi Apex

Hi apex.
H900 watt project is very good. It really works very well and as well as output is very Punchy and clear.
I am confused in one thing, may be this is a problem that u might know.
I need the step driver test up procedure.

when we turn the amp on then the voltages on fuses are 55 +ve and -ve.
When we increase the volume voltage quickly goes upto 110 +ve and -ve on the fuses.
When we descrease the volume the voltage aren't goes down it remains the same on high voltages as 110 +ve and -ve on both sides. when we switch it off and turn it on again then voltages remain stable such as 55 +ve and -ve. but i think that the voltages should be vary with the volume controll. Plz help me.
I look forward to see ur reply

Thanks

Khalsa
  Reply With Quote
Old 8th May 2010, 06:00 PM   #527
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by khalsa View Post
Hi apex.
H900 watt project is very good. It really works very well and as well as output is very Punchy and clear.
I am confused in one thing, may be this is a problem that u might know.
I need the step driver test up procedure.

when we turn the amp on then the voltages on fuses are 55 +ve and -ve.
When we increase the volume voltage quickly goes upto 110 +ve and -ve on the fuses.
When we descrease the volume the voltage aren't goes down it remains the same on high voltages as 110 +ve and -ve on both sides. when we switch it off and turn it on again then voltages remain stable such as 55 +ve and -ve. but i think that the voltages should be vary with the volume controll. Plz help me.
I look forward to see ur reply

Thanks

Khalsa
Voltage on the fuses is 55V, and if you measure with DMM, voltage in DC range can't be over 70V with high volume level, becouse step on 110V is fast and short, and you never can measure 110V on fuse. Something is wrong on your amp, can you post some pictures, maybe I can see mistake.
Regards
  Reply With Quote
Old 9th May 2010, 08:07 AM   #528
khalsa is offline khalsa  India
diyAudio Member
 
Join Date: Dec 2007
Send a message via Yahoo to khalsa
Default hi apex

Hi apex I attach the photos
plz have a look.
Attached Images
File Type: jpg IMG_0211.jpg (277.4 KB, 1847 views)
File Type: jpg IMG_0212.jpg (291.9 KB, 1670 views)
File Type: jpg IMG_0213.jpg (285.5 KB, 1493 views)
File Type: jpg IMG_0214.jpg (276.2 KB, 1328 views)
File Type: jpg IMG_0216.jpg (317.1 KB, 1254 views)
File Type: jpg IMG_0215.jpg (292.2 KB, 504 views)
  Reply With Quote
Old 9th May 2010, 10:35 AM   #529
diyAudio Member
 
apexaudio's Avatar
 
Join Date: Feb 2010
Location: Serbia
Quote:
Originally Posted by khalsa View Post
Hi apex I attach the photos
plz have a look.
Component layout is ok, what is the fet useing in step driver? Try IRFZ44 for test. Where you connect input gnd from psu? Is output signal clear, without HF oscilation?
Regards
  Reply With Quote
Old 9th May 2010, 11:52 AM   #530
khalsa is offline khalsa  India
diyAudio Member
 
Join Date: Dec 2007
Send a message via Yahoo to 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
Attached Images
File Type: jpg IMG_0219.jpg (295.0 KB, 501 views)
File Type: jpg IMG_0220.jpg (331.4 KB, 465 views)

Last edited by khalsa; 9th May 2010 at 12:19 PM.
  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 04:36 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