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 28th February 2012, 05:44 PM   #1
Pallas is offline Pallas  Pakistan
diyAudio Member
 
Join Date: Aug 2004
Location: ATL
Default Plug-n-play multichannel amp using PE IRS2092 board?

The board is here: http://www.parts-express.com/pe/show...number=320-313

Would it be possible to make a plug-n-play 6-8 channel amp using these boards and a single PS? What PS would be required to effect that?

That board looks interesting to me because it seems to be capable of a genuine 100W into 8Ω.

Or is a multichannel amp simply not a project for an electronics novice, even if using prefab boards?
  Reply With Quote
Old 28th February 2012, 09:24 PM   #2
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
You would need 8 * 250W + 20% power supply.
2500VA transformer should do the job.

You would need to take care with grounding to stop any hum.
Use star grounds.
__________________
http://www.murtonpikesystems.co.uk PCBCAD50 pcb design software.
  Reply With Quote
Old 28th February 2012, 10:44 PM   #3
diyAudio Member
 
Join Date: Feb 2012
I would use the L15D-L20-L25D boards from LJM if I was you. Reasons why...
1. Price is about half for given channel
2. Easier to use as they are single channel modules (sold in pairs)
3. Better quality, SURE boards have had their issues, the general idea here is that LJM is superior to SURE. I am sure LJM will chime in here and prove that fact.
4. Better support in this community from LJM and others, VS SURE that might not reply to your request.

I am going to choose either ljm_ljm or hien.t.nguyen design. I feel ljm_ljm is a proven design here. I also feel that the hien.t.nguyen design offers better features however it is a new design. I am planning a multichannel design myself. I am a diy amplifier virgin, however I have an electronics engineering degree and can manage such a project, I have no real diy amplifier experience. I am a car / home stereo buff and have a 2100W car stereo, with a 8 speaker (20 driver) home theatre

Check them out
Power Amplifier and Power Supply Full PWM

MY DESIGN L20D IRS2092+IRFI4020H 200W8R
  Reply With Quote
Old 1st March 2012, 03:05 PM   #4
Pallas is offline Pallas  Pakistan
diyAudio Member
 
Join Date: Aug 2004
Location: ATL
Question rendered moot: found and purchased a commercial amp that meets my needs.
  Reply With Quote
Old 1st March 2012, 04:31 PM   #5
diyAudio Member
 
Join Date: Feb 2012
Quote:
Originally Posted by Pallas View Post
Question rendered moot: found and purchased a commercial amp that meets my needs.

Care to share the product information???
  Reply With Quote
Old 1st March 2012, 05:24 PM   #6
Pallas is offline Pallas  Pakistan
diyAudio Member
 
Join Date: Aug 2004
Location: ATL
Quote:
Originally Posted by NissanSR20Man View Post
Care to share the product information???
Nothing that would interest this forum, honestly, as it's a gigantic and not particularly modern or energy-efficient thing: Sherwood Newcastle A-965. Eighty lbs of seven-channel class AB boat anchor. It doesn't even have a modern SMPS, but rather dual transformers to collectively feed the seven mono amps. I'll likely only be using six channels, though if I can get away with it I might power my high-mounted sub off of channel 7. (Surrounds I'll just drive from my Anthem AVR.)

But it has a 12V trigger on, so it won't be wasting much power when not in use, a very minimal-looking faceplate, and it was basically silent when I hooked an Eminence APT tweeter on a small square Eminence horn (not hifi, but compact and very sensitive, and thus good for rejecting noisy amps) to each amp channel, with my iPhone as the source to each RCA input.. Yes, it's a lot less efficient than a class D amp would be, and much larger than any class D amp of similar power, but it's proven and carries OSHA electrical safety certification (UL).

Though I would have preferred a class D amp for energy efficiency, this one meets all of my current and likely future needs.

Last edited by Pallas; 1st March 2012 at 05:26 PM.
  Reply With Quote
Old 1st March 2012, 05:57 PM   #7
diyAudio Member
 
Join Date: Jul 2004
Location: Mountain View, CA
Quote:
Originally Posted by NissanSR20Man View Post
I would use the L15D-L20-L25D boards from LJM if I was you. Reasons why...
...
3. Better quality, SURE boards have had their issues, the general idea here is that LJM is superior to SURE. I am sure LJM will chime in here and prove that fact.
I can't help but wonder how good the quality could be at such low prices.

So cheap that maybe the way to peace of mind is to buy extras for spares.
__________________
-----------------------------------------
Noah
  Reply With Quote
Old 1st March 2012, 09:55 PM   #8
diyAudio Member
 
Join Date: Feb 2012
you are correct - Sure and LJM are cheap, you still need a PSU and other bits, thats the art of DIY. I would still buy any of those brands due to me being capable of repair. if you are looking for a return policy go to best buy and pay retail. I prefer to blaze a trail and do the diy thing. Lots of confidence in me doing it with no warranty vs some kid or machine in china making it, traveling a million miles to a store, then paying retail to get a warranty
  Reply With Quote
Old 8th January 2014, 01:59 PM   #9
Git is offline Git  Comoros
diyAudio Member
 
Join Date: May 2004
Location: location location
Quote:
Originally Posted by NissanSR20Man View Post
however I have an electronics engineering degree and can manage such a project
Lol, you sound *exactly* like me 40 years ago

Git
  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
multichannel amp using irs2092 boot sync question authlxl Class D 2 17th February 2012 09:44 AM
out of the box plug and play solution? flataffect Chip Amps 0 8th August 2010 04:23 PM
Plug and Play Power Supply exeric Tubes / Valves 9 10th June 2010 03:24 AM
Multichannel digital IN/OUT mod or board? jheoaustin Digital Source 9 1st January 2008 10:12 PM
Plug 'N' Play B+ time delay Renron Tubes / Valves 1 5th December 2007 01:33 AM


New To Site? Need Help?

All times are GMT. The time now is 03:08 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