My new Helder TA2050 amp build - diyAudio
Go Back   Home > Forums > Amplifiers > Class D
Home Forums Rules Articles diyAudio Store Gallery Wiki Blogs Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

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
Thread Tools Search this Thread
Old 3rd November 2012, 07:44 PM   #1
diyAudio Member
Join Date: Jun 2008
Default My new Helder TA2050 amp build


Having dipped my toe in the water with the Lepai 2020, and a YJ 2020 board I have now put together a 100W amp from two Helder TA2050 boards and a Meanwell NES 350 24 SMPS. It was so simple to do I feel a bit of a sham posting to a DIY audio forum!

Anyway the boards are MkII versions I think, and I can confidently say its the best amp I've ever owned, and not by a small margin. It's replacing valve amp its sat on that I've owned for several years. The helder is better in most ways, but its simply clearer and more transparent. Its essentially colourless as far as I can tell adding very little of its own and restricting very little. Some might not like that, but I'm not one for a romantic sound.

Here's a pic of the testbed.

Click the image to open in full size.

Next I'm thinking of a 3U x 280 deep rack case from modushop. Big, I know, but it will take two meanwell PSUs mounded edgeways should I decide to upgrade the supply, or for other future expansions It'll also be similar in size to my Audio Research SP9 preamp (for which I have both black and silver face plates).

I can't decide whether to go with the rack ears or not, or silver/black. What do you think? Also, I'm fine drilling the case for the audio sockets but I'd like an IEC socket on the back for power, but don't know how to make square holes! What are my options as I don't have a drill press!

Click the image to open in full size.
Click the image to open in full size.
Click the image to open in full size.
  Reply With Quote
Old 3rd November 2012, 10:01 PM   #2
diyAudio Member
Join Date: Oct 2012
Nice! The Tripath TA/TK2050 is a very nice sounding pair of chips. I have the Sure 2X100w @ 4Ohm paralelled 2050 version (now on sale 29$ on Ebay) and the LT-50-2050 version (Ebay). Audiophile indeed! But how to parralell it in a simlpe way? How did you do it, or what did you do? It is already BTL i guess...
  Reply With Quote
Old 3rd November 2012, 10:40 PM   #3
diyAudio Member
Join Date: Jun 2008
I did nothing to them to parallel them, AFAIK these are sold as monoblocs. I bought them from ebay off a chap who had 4 of them. I don't think he has modified them, they just worked 'out of the box' as it were. Time to get them back in the box

I've not heard any Sure kit, but $29 sounds a steal. I paid 55 for the two Helder boards. Money very well spent I'd say.

Last edited by hozepipe; 3rd November 2012 at 10:42 PM.
  Reply With Quote


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
Arjen Helder TA2020 build question Katch Class D 4 20th January 2012 02:22 PM
Cant find + & - on a Helder tube preamp?? superlian Class D 6 11th July 2011 11:50 AM
Arjen Helder amp for TV Kjeldsen Class D 2 6th April 2011 05:43 AM
24V PSU for TA2050 etc Barbieboy Class D 0 24th February 2011 09:54 PM
WTB: TA2020 or TA2050 amp, cosmetics unimportant Egindin Swap Meet 1 3rd September 2010 09:35 PM

New To Site? Need Help?

All times are GMT. The time now is 03:18 PM.

vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright 1999-2017 diyAudio

Content Relevant URLs by vBSEO 3.3.2