Choice of TA3020 boards - 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 1st December 2009, 01:11 PM   #1
fb is offline fb  Australia
diyAudio Member
 
Join Date: Apr 2005
Location: Brisbane, Aus
Default Choice of TA3020 boards

So I was looking at the AMP7 and Truepath modules from 41hz - they seem to have a very good reputation. However I've just seen connexelectronic's TA3020v3b modules (and their SMPS, speaker protection etc). The CNX stuff is much cheaper (comparing prebuilt modules), though the amp module is rated for less power.

What would you recommend? Has anyone used the CNX SMPS? Also I've noticed the CNX amp board uses the older mosfets.....

My need is 4x~300W into 8ohm, bridgeable into 2x~1000W into 8ohm. Majority of the time these will be used in my house, occasionally some PA use. My woofers are very low distortion, so quality is important to me. Woofers are rated 500WRMS, 1200W peak.

Thanks
  Reply With Quote
Old 2nd December 2009, 10:30 PM   #2
diyAudio Member
 
Josephjcole's Avatar
 
Join Date: Jun 2004
Location: Wisconsin
I would interested as well in hearing if anybody had experience with both amps from 41hz and connexelectronics amps based on the 3020 chip. This is supposed to be a well regarded chip and the connexelectronics board is tempting considering the price.
Joe
  Reply With Quote
Old 3rd December 2009, 01:25 AM   #3
cjkpkg is offline cjkpkg  United States
diyAudio Member
 
Join Date: Aug 2008
Location: Roswell GA
I have used both 41hz versions and the CNX versions of the TA2022 amps. The 41hz board is DIY and CNX comes fully assembled.

I will be honest and tell you that I had problems with pads ripping off the 41hz board very easily when I went to resolder components. That being said, the components on the boards seem comparable. The 41hz circuit seemed a little more "complex" - not better or worse, just more complicated. I ended up scrapping the 41hz board, scavenged what I could off the board and put the CNX amp in its place.

Many of the traces on the CNX board appear to be wider and in my opinion less prone to ripping off. Maybe I got a bum board or whatever.

Many people here have had good luck with both. I guess it just depends how much board stuffing you want to do yourself and how much you want to spend.
  Reply With Quote
Old 3rd December 2009, 01:56 AM   #4
col is offline col  Australia
diyAudio Member
 
col's Avatar
 
Join Date: Feb 2008
Location: Melbourne, Victoria, Australia
I have a ConnexElectronics TA3020-V1 amp that I built around a year ago. I'm using it with a 30-0-30v 300VA Toroidal transformer, so lower end of the power spectrum. Sounds very nice and when I bridge it to power a PA sub copes fine. Great value for money.

col.
__________________
http://www.minirig.org.au
  Reply With Quote
Old 3rd December 2009, 02:26 AM   #5
fb is offline fb  Australia
diyAudio Member
 
Join Date: Apr 2005
Location: Brisbane, Aus
Col, have you used it with compression drivers? I'm active amping - my current amp is a home theatre reciever and it produces a lot of noise with the high sensitivity driver (I think it's from the input stage).

  Reply With Quote
Old 3rd December 2009, 02:37 AM   #6
col is offline col  Australia
diyAudio Member
 
col's Avatar
 
Join Date: Feb 2008
Location: Melbourne, Victoria, Australia
Quote:
Originally Posted by fb View Post
Col, have you used it with compression drivers? I'm active amping - my current amp is a home theatre reciever and it produces a lot of noise with the high sensitivity driver (I think it's from the input stage).

Quote:
My need is 4x~300W into 8ohm, bridgeable into 2x~1000W into 8ohm. Majority of the time these will be used in my house, occasionally some PA use. My woofers are very low distortion, so quality is important to me. Woofers are rated 500WRMS, 1200W peak.
you are going to put 300W into a compression driver at home! I hope you have some very good ear defenders

I have a tri-amped system with compression drivers (104db), it is very hard to find an amp quite enough to stop hiss. I use a TA2020 or TDA8920 for this purpose. TA3020 is better on the mids or subs.

col.
__________________
http://www.minirig.org.au
  Reply With Quote
Old 3rd December 2009, 02:46 AM   #7
fb is offline fb  Australia
diyAudio Member
 
Join Date: Apr 2005
Location: Brisbane, Aus
Hehe, I know I'll only ever use a couple of watts with the CD at home. I just don't want to be caught short in a PA situation - I've been looking at the power ratings into 8ohm of the other amps on the 41hz site and the ta3020 seems to be the best option. I'll have a look at TDA8920
  Reply With Quote
Old 3rd December 2009, 05:49 AM   #8
luka is offline luka  Slovenia
diyAudio Member
 
luka's Avatar
 
Join Date: Sep 2005
Location: in Slovenia :)
Send a message via Skype™ to luka
got amp7 and amp2, both great, 7 just better, has more "options" if I say so
  Reply With Quote
Old 3rd December 2009, 07:57 AM   #9
diyAudio Member
 
Join Date: Jan 2007
I didn't have the chance to compare the various 3020s but, regarding board quality, I can say that 41Hz Truepath has a top quality PCB.
I've done extensive modifications and parts swapping (and then some more swapping) and the board seems to hold pretty well.
The parts used in the kit are all quality stuff from known brands.
  Reply With Quote
Old 3rd December 2009, 01:02 PM   #10
fb is offline fb  Australia
diyAudio Member
 
Join Date: Apr 2005
Location: Brisbane, Aus
Quote:
Originally Posted by luka View Post
got amp7 and amp2, both great, 7 just better, has more "options" if I say so
Amp7 is looking like my best option for the woofers - I'm just not quite sure what the actual output power is into 8ohm.



Col, do you think the TDA892x v2 board with TDA8950TH IC option would be a good choice for the compression drivers?



  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
TA3020 HELp!!!!!!!!!!!! TeamAmped! Chip Amps 5 25th September 2009 04:25 PM
Ta3020 IC Request:Please Help... mehrdad Parts 7 6th June 2007 05:48 PM
ta0105a, ta3020 0618 Class D 1 24th May 2005 10:05 PM
ta3020 marios Parts 0 31st January 2005 08:35 AM
Tripath TA3020 Deltat Chip Amps 0 1st November 2004 03:24 AM


New To Site? Need Help?

All times are GMT. The time now is 12:02 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