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 February 2008, 12:10 AM   #21
mfb is offline mfb  United States
diyAudio Member
 
Join Date: Dec 2004
Location: petaluma, ca
here's my 5 channel build in the stereo chassis.

Click the image to open in full size.

Click the image to open in full size.
  Reply With Quote
Old 27th February 2008, 11:35 AM   #22
diyAudio Member
 
Join Date: Feb 2005
Location: Abu Dhabi
Those Hexateq chassis really are beautiful aren't they!

Nice work too guys - MFB that's some really neat wiring!

My hifi2000 cases arrived about a week back and I'm very happy with them in terms of fit & finish vs the price I paid.

I'm itching to get my monoblocs built but unfortunately I'm suffering from a collapsed disc in my back and while the movement needed to do the work is manageable I'm finding that by the time I get home from work I lack the inclination and just want to sleep Still my weekend starts tomorrow evening and I'm determined to make some progress over the weekend - I'll post some piccies once they're done.

Cheers

Dave
  Reply With Quote
Old 16th March 2008, 07:41 AM   #23
diyAudio Member
 
Join Date: Feb 2005
Location: Abu Dhabi
Well they're finally done!

I now have my pair of UcD400HG monoblocs singing sweetly, they seem especially nice when fed from a valve preamp too!

I'll take and post a few piccies over the coming 3-4 days.

So far my only problem is a major mis-match in the illumination level of the green standby LEDs I've used! Hardly a disaster I know but it's bugging me no end.

It seems to me that it must be the LEDs themselves which are exhibiting different characteristics or possibly I've made a really poor joint on one of them, the 2 blue LEDs integrated in the standby/on push buttons illuminate equally, this seems to eliminate a difference in the voltage output from the Hypex softstart modules or in the wiring between those modules and the LED pairs in each monobloc - oh well I really wanted yellow for standby - only fitted the greens because I had them in my odds & sods box!

Anyway enough rambling - piccies later

Cheers

Dave.
  Reply With Quote
Old 18th March 2008, 05:13 PM   #24
croger is offline croger  United States
diyAudio Member
 
Join Date: Jan 2008
congrats! I am really liking my amps as well. I used blue LEDs. I had wired one wrong and had to switch the connection around ffor it to work. didnt realise that either end of the LED had to go in a specific place on the amp.

Quote:
Originally posted by bearddavid
Well they're finally done!

I now have my pair of UcD400HG monoblocs singing sweetly, they seem especially nice when fed from a valve preamp too!

I'll take and post a few piccies over the coming 3-4 days.

So far my only problem is a major mis-match in the illumination level of the green standby LEDs I've used! Hardly a disaster I know but it's bugging me no end.

It seems to me that it must be the LEDs themselves which are exhibiting different characteristics or possibly I've made a really poor joint on one of them, the 2 blue LEDs integrated in the standby/on push buttons illuminate equally, this seems to eliminate a difference in the voltage output from the Hypex softstart modules or in the wiring between those modules and the LED pairs in each monobloc - oh well I really wanted yellow for standby - only fitted the greens because I had them in my odds & sods box!

Anyway enough rambling - piccies later

Cheers

Dave.
  Reply With Quote
Old 24th March 2008, 10:42 AM   #25
diyAudio Member
 
Join Date: Feb 2005
Location: Abu Dhabi
Hi all,

for some reason I can no longer access this website from home! I thought it was my antivirus/web defence software but no - even using my work laptop I can't get here from home and to be honest right now I can't arsed sorting it out so I'll just post in my lunchtimes at work!

So somewhat late here are a few piccies of my UcD400HG monoblocs:-


A top view of the completed unit:-

Click the image to open in full size.

Front :-

Click the image to open in full size.


Rear:-

Click the image to open in full size.


Detail of amp module & softstart / wiring:-

Click the image to open in full size.
  Reply With Quote
Old 24th March 2008, 10:50 AM   #26
diyAudio Member
 
Join Date: Feb 2005
Location: Abu Dhabi
a few more:-


front/side:-

Click the image to open in full size.


rear/side:-

Click the image to open in full size.


long shot:-

Click the image to open in full size.


initial testing session:-

Click the image to open in full size.


thoughts on the sound to follow but initial response is very positive!

cheers
Dave
  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
how to briged 2x ucd400hg slr 5000 Class D 4 2nd October 2008 09:08 AM
5 channel UCD400HG Kit ngiachin Swap Meet 3 24th June 2008 05:29 PM
UcD400HG amp finished Alfetta87 Class D 19 1st May 2008 11:22 AM
UcD400HG MonoBlocks project... help please croger Class D 18 15th February 2008 10:55 AM
DIY UcD400HG Monoblocks that can do Stairway to Heaven outofthebox Class D 21 17th December 2007 06:58 AM


New To Site? Need Help?

All times are GMT. The time now is 07:15 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