Hypex UCD180 (OEM) - how to bridge? - 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 26th January 2013, 11:12 PM   #1
Pallas is offline Pallas  Pakistan
diyAudio Member
 
Join Date: Aug 2004
Location: ATL
Default Hypex UCD180 (OEM) - how to bridge?

I recently picked up an commercial amplifier based on the UcD180 module, and I'm curious how to bridge it. The maker offers the amp as a monobloc as well (same chassis, PS, and I believe amp board) so I expect it's possible, but I'm not sure how it would be wired up for a bridge.

The curiosity is mostly academic - I plan on measuring the frequency of a few different Class D based on different chipsets into real speakers, compared to a reference-grade Class AB unit, to quantify whatever actual differences the different approaches may cause when driving actual loudspeakers. My standard use for the amp will be as a stereo unit. (And, if its HF frequency response is truly as insensitive to load as a good AB amp, then perhaps as my measurement amp as well.)
__________________
Serious Audio Blog

Last edited by Pallas; 27th January 2013 at 12:24 AM.
  Reply With Quote
Old 28th January 2013, 01:51 PM   #2
diyAudio Member
 
nigelwright7557's Avatar
 
Join Date: Apr 2008
Location: Carlisle, England
You would need a phase splitter to generate the two opposite phases for the amplifiers.
Then the output is taken from the two amplifier outputs.
  Reply With Quote
Old 28th January 2013, 03:10 PM   #3
diyAudio Member
 
Join Date: Apr 2010
I 'd recommend an an active line level low noise-OPAMP inverter (e. g. OPA134 powered by + / - 15Vdc) - it could output 2 signals 180 out of phase, they can then be sent to 2 half-bridge stages, whose grounds / supply rails must be interconnected in order to "harvest" the bridged output power from the two "hot" connectors.
  Reply With Quote
Old 28th January 2013, 03:16 PM   #4
ds23man is offline ds23man  Netherlands
diyAudio Member
 
Join Date: Oct 2006
The Hypex amps are all balanced in!!!!!!!!! Just reverse the input on one amp, no need for phase splitters.
  Reply With Quote
Old 28th January 2013, 03:29 PM   #5
diyAudio Member
 
Join Date: Apr 2010
"The Hypex amps are all balanced in!!!!!!!!! Just reverse the input on one amp, no need for phase splitters."

I agree. This is the easiest way to go in this case.
  Reply With Quote
Old 28th January 2013, 08:00 PM   #6
Pallas is offline Pallas  Pakistan
diyAudio Member
 
Join Date: Aug 2004
Location: ATL
Quote:
Originally Posted by ViennaTom View Post
"The Hypex amps are all balanced in!!!!!!!!! Just reverse the input on one amp, no need for phase splitters."

I agree. This is the easiest way to go in this case.
This particular one (I don't know why I was cagey with the brand/model earlier; it's a Pro-Ject Amp Box SE) only has single-ended inputs.

At any rate, it does seem like it might be too much trouble for what I want to do. I thought maybe, as with a lot of amps, one could just feel them the same signal, and connect one terminal from each channel.
__________________
Serious Audio Blog
  Reply With Quote
Old 28th January 2013, 09:28 PM   #7
Koifarm is offline Koifarm  Netherlands
diyAudio Member
 
Koifarm's Avatar
 
Join Date: Aug 2005
Look here for more info.

bridging ucd amps
  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
Hypex UCD180 Gain Change? jdubs Class D 35 18th June 2014 02:02 PM
Problem with Hypex SMPS400/67 (OEM V4) tatus Power Supplies 8 25th April 2012 12:04 PM
Preamp for Hypex UCD180 dtaylo3 Class D 1 17th January 2012 03:26 AM
For Sale: Hypex UCD400 OEM Unused Tenson Swap Meet 5 29th November 2010 02:44 PM
How can I recognize an Hypex UCD400 from an UCD180? zigo3 Class D 6 25th March 2009 10:53 PM


New To Site? Need Help?

All times are GMT. The time now is 05:08 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