Go Back   Home > Forums > >
Home Forums Rules Articles diyAudio Store Blogs Gallery Wiki Register Donations FAQ Calendar Search Today's Posts Mark Forums Read

Class D Switching Power Amplifiers and Power D/A conversion

Class D Amp Photo Gallery
Class D Amp Photo Gallery
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 10th October 2006, 10:08 AM   #21
SSassen is offline SSassen  Netherlands
diyAudio Member
 
SSassen's Avatar
 
Join Date: Mar 2005
Location: Edam, The Netherlands
Thanks,

That's just how I build all my gear, friends call it the Sander-Super-Nett-Verarbeitung, and that's coming from a bunch of German friends that have perfection written all over their builds already.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com
__________________
Mediocre is not my middle name.
  Reply With Quote
Old 10th October 2006, 10:20 AM   #22
TOINO is offline TOINO  Portugal
diyAudio Member
 
TOINO's Avatar
 
Join Date: Oct 2004
Location: Coimbra
...O.C.C 1KW...
Attached Images
File Type: jpg occ-1kw.jpg (67.5 KB, 16841 views)
  Reply With Quote
Old 10th October 2006, 11:36 AM   #23
BWRX is offline BWRX  United States
diyAudio Moderator Emeritus
 
BWRX's Avatar
 
Join Date: Jan 2005
Location: Pennsylvania
Quote:
Originally posted by TOINO
...O.C.C 1KW...
Care to share any more info about this module?
__________________
Brian
  Reply With Quote
Old 10th October 2006, 12:36 PM   #24
drzhuang is offline drzhuang  China
diyAudio Member
 
Join Date: Nov 2005
Default Re: Re: It was called X-1

Quote:
Originally posted by BWRX



It sure looks nice, but how did it sound? What kind of class d amp is it?

It sound good.

Modulator: classical PWM
Feedback: before LC filter
Power stage: N channel mosfets H bridge


Another kit of mono 500W@8
Attached Images
File Type: jpg 20062722646533.jpg (91.4 KB, 16328 views)
  Reply With Quote
Old 10th October 2006, 12:42 PM   #25
Javin5 is offline Javin5  Switzerland
diyAudio Member
 
Join Date: Mar 2006
Location: Switzerland
Hallo Sander

This is an outstandig implementation, perfect workmanship, clean design, very professional! Congratulations! As a beginner, with yet limited experience, may I ask two questions?

(1) You are using unbalanced inputs, rather than XLR. Did you compare the two and found no difference in performance? You just tied the unused input to ground?

(2) I see that you are using a power line filter. If I recall correctly, Bruno once recommended against it, because the Y-caps could cause ground contamination with power line noise. However, it all may depend on how grounding is implemented. Maybe you could shortly comment on this?

I'm in the process of finishing two UcD180AD monoblocks, a picture will follow shortly.

Kurt
  Reply With Quote
Old 10th October 2006, 12:58 PM   #26
SSassen is offline SSassen  Netherlands
diyAudio Member
 
SSassen's Avatar
 
Join Date: Mar 2005
Location: Edam, The Netherlands
Kurt,

Quote:
(1) You are using unbalanced inputs, rather than XLR. Did you compare the two and found no difference in performance? You just tied the unused input to ground?
At that time I had more use for it as a single-ended amplifier, my current setup uses two Hypex UcD400s that do have a balanced input however. IMHO balanced inputs are superior to single ended, provided you carry this through throughout your system, only having one component with balanced in/outputs is rather pointless.

Quote:
(2) I see that you are using a power line filter. If I recall correctly, Bruno once recommended against it, because the Y-caps could cause ground contamination with power line noise. However, it all may depend on how grounding is implemented. Maybe you could shortly comment on this?
Well, that's correct, however I'm using a medical grade line filter which does NOT have Y-caps, so I do not have that problem.

Best regards,

Sander Sassen
http://www.hardwareanalysis.com
__________________
Mediocre is not my middle name.
  Reply With Quote
Old 10th October 2006, 01:02 PM   #27
ssanmor is offline ssanmor  Spain
diyAudio Member
 
Join Date: Jan 2002
Location: Madrid
Some photos of a recently developed 6x400W amplifier, based on 6 coldamp BP4078 modules and 3 SPS80.

Height is only 44mm.

(don't know if I posted it before in other thread, sorry if so).
Attached Images
File Type: jpg lateral_frontal.jpg (52.2 KB, 14121 views)
  Reply With Quote
Old 10th October 2006, 01:04 PM   #28
ssanmor is offline ssanmor  Spain
diyAudio Member
 
Join Date: Jan 2002
Location: Madrid
and now the internals...
Attached Images
File Type: jpg rack_open_top1.jpg (95.7 KB, 14953 views)
  Reply With Quote
Old 10th October 2006, 01:09 PM   #29
fredos is offline fredos  Canada
diyAudio Member
 
Join Date: Mar 2005
Location: Quebec
The old D-amp 8000HVI.....

Fredos

www.d-amp.com
Attached Images
File Type: jpg dscn2310.jpg (42.4 KB, 14328 views)
  Reply With Quote
Old 10th October 2006, 01:10 PM   #30
SSassen is offline SSassen  Netherlands
diyAudio Member
 
SSassen's Avatar
 
Join Date: Mar 2005
Location: Edam, The Netherlands
Quote:
Some photos of a recently developed 6x400W amplifier, based on 6 coldamp BP4078 modules and 3 SPS80.
That's a tight fit! isn't that little fan irritatingly loud?

Best regards,

Sander Sassen
http://www.hardwareanalysis.com
__________________
Mediocre is not my middle name.
  Reply With Quote

Reply


Class D Amp Photo GalleryHide 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

Forum Jump


New To Site? Need Help?

All times are GMT. The time now is 08:19 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2017 DragonByte Technologies Ltd.
Copyright ©1999-2017 diyAudio
Wiki