300 to 500 watt @4ohms amplifier for subwoofer - Page 2 - diyAudio
Go Back   Home > Forums > Amplifiers > Class D

Class D Switching Power Amplifiers and Power D/A conversion

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 21st September 2012, 07:21 AM   #11
diyAudio Member
 
Join Date: Jun 2010
Hi
what about protection for this amp?
  Reply With Quote
Old 21st September 2012, 07:24 AM   #12
diyAudio Member
 
Join Date: Jun 2010
Quote:
Originally Posted by andrewlebon View Post
ucd 25 watts to 1200 watts using 2 mosfets

READ post 2174 by irvynejay its correct and tested
warm regards
andrew lebon

Hi andrew lebon
i am confusing with that pictures
please Explain some that
thanks
  Reply With Quote
Old 21st September 2012, 08:47 AM   #13
paskal9 is offline paskal9  Malaysia
diyAudio Member
 
paskal9's Avatar
 
Join Date: Apr 2010
Location: the tropics with 97% humidity
Quote:
Originally Posted by Hadighorbani View Post
Hi
what about protection for this amp?
there's no protection integrated in that amp. IMHO for a subwoofer implementation you only need DC offset protection. to me, why limit the current when you're looking to extract the most out of the amp.

i rather not limit the current and let the mosfet burn so that i know i need a better design to get the maximum out of my subs. if the mosfet burn then to me it's a clear indication that the design don't output enough juice.

that, and the fact that the amp is much simpler without any over-current protection.
  Reply With Quote
Old 21st September 2012, 02:15 PM   #14
diyAudio Member
 
Join Date: Nov 2011
Hello MR Ghorbani.

did u make this amp? I mean IRS900d .
I had some problem with it. but trying to make a new one. hopefully it may works well.

please help me by sharing your experiences about this amp specially that we have the same nationality! hadi jan!
  Reply With Quote
Old 21st September 2012, 02:21 PM   #15
diyAudio Member
 
Join Date: Nov 2011
Quote:
Originally Posted by paskal9 View Post
if you're looking to drive a subwoofer with it, better to go with a bridged design as there will definitely be bus pumping effect.

how significant the effect will be only you could judge after powering them up and actually driving the sub with it. it's quite apparent enough in my application that i decided to bridge all my amp.

as for the design, irs900d is currently the most robust design that i've came across while keeping the parts count very low.
thank you paskal9
could you send me the pcb file of this amp you've mentioned?
  Reply With Quote
Old 24th September 2012, 02:27 AM   #16
diyAudio Member
 
Join Date: Jun 2010
Quote:
Originally Posted by paskal9 View Post
there's no protection integrated in that amp. IMHO for a subwoofer implementation you only need DC offset protection. to me, why limit the current when you're looking to extract the most out of the amp.

i rather not limit the current and let the mosfet burn so that i know i need a better design to get the maximum out of my subs. if the mosfet burn then to me it's a clear indication that the design don't output enough juice.

that, and the fact that the amp is much simpler without any over-current protection.
Thanks friend
I need over-curent and output short protection for this amp.
Hi nn20
You can give best helps by mr lebon.
  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
Looking 500W 4ohms amplifier for Polk Subwoofer samsagaz Subwoofers 4 24th June 2009 08:47 AM
Help With A 500 Watt subwoofer and a 1000 amp Bgpoet Solid State 2 30th December 2008 07:41 AM
300 Watt Amplifier broka Solid State 1 9th September 2006 07:48 AM
need 500 watt subwoofer amp kit gompka Solid State 7 19th February 2006 01:29 AM


New To Site? Need Help?

All times are GMT. The time now is 07:57 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