Speaker Protection module that runs on DC? - 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 5th October 2012, 01:39 PM   #1
redjr is offline redjr  United States
diyAudio Member
 
Join Date: May 2011
Location: Danbury, CT
Default Speaker Protection module that runs on DC?

I'm looking to buy a simple speaker protection startup module that takes a low voltage DC, rather than the more typical 12-16VAC. This will allow me to use the aux voltage supply on my SMPS that already supplies a low DC voltage output. I suppose I could simply bypass the rectification circuit, but just wondering if there are any boards out there (China) that use DC instead of AC voltage to tap off of.
__________________
redjr
  Reply With Quote
Old 5th October 2012, 02:28 PM   #2
diyAudio Member
 
Join Date: Apr 2010
Location: Brisbane
Quote:
Originally Posted by redjr View Post
I'm looking to buy a simple speaker protection startup module that takes a low voltage DC, rather than the more typical 12-16VAC. This will allow me to use the aux voltage supply on my SMPS that already supplies a low DC voltage output. I suppose I could simply bypass the rectification circuit, but just wondering if there are any boards out there (China) that use DC instead of AC voltage to tap off of.
I use WLX-7 speaker protection boards from zoe_tsang they work well on 12V DC from the SMPS, the only mod i made was a wire bridge instead of the 7812 voltage regulator .

Cheers ,
Rens
__________________
If you measure, you know; if you guess, you don't
  Reply With Quote
Old 5th October 2012, 02:31 PM   #3
Cristi is offline Cristi  Europe
diyAudio Member
 
Join Date: Dec 2008
Location: Dortmund+Shenzhen
This one Connexelectronic can be supplied either with AC voltage or DC voltage. When supply with DC voltage the rectifier bridge is bypassed and the AC off sense is taken from +DC which have to be connected with AC1. Supply voltage range is 10-15 V DC with the standard type relay and can be extended to 24V with 24V type relay. Can be supplied from any of the avaialble Connexelectronic SMPS aux. output.
__________________
www.connexelectronic.com complete assembled amplifier and SMPS
  Reply With Quote
Old 5th October 2012, 02:46 PM   #4
redjr is offline redjr  United States
diyAudio Member
 
Join Date: May 2011
Location: Danbury, CT
Quote:
Originally Posted by Cristi View Post
This one Connexelectronic can be supplied either with AC voltage or DC voltage. When supply with DC voltage the rectifier bridge is bypassed and the AC off sense is taken from +DC which have to be connected with AC1. Supply voltage range is 10-15 V DC with the standard type relay and can be extended to 24V with 24V type relay. Can be supplied from any of the avaialble Connexelectronic SMPS aux. output.
Hi Cristi,

Yours looks like the perfect solution and exactly what I'm looking for - allowing both AC and DC operation. Thx. BTW, I'm using two of your SMPS' (500R and 300R), and I'm very impressed with the operation and especially the quality of the builds. The 500R is in a recent, new class D amp I'm building. Expect and order from me soon.
__________________
redjr
  Reply With Quote
Old 17th October 2012, 06:57 PM   #5
UV101 is offline UV101  England
diyAudio Member
 
UV101's Avatar
 
Join Date: Dec 2008
Location: Oxford
Quote:
Originally Posted by doctordata View Post
I use WLX-7 speaker protection boards from zoe_tsang they work well on 12V DC from the SMPS, the only mod i made was a wire bridge instead of the 7812 voltage regulator .

Cheers ,
Rens
Hi Rens, I'm also using this board, but it keeps tripping as I turn the power up. I'm wondering if I've done something stupid connecting it. I've got the output from the amp to the side furthest from the regulator L-G-G-R with the R closest to the edge. I'm linking the L & R inputs to the other L&R sense on the same edge. Is this correct? There is definately no DC on the output but the protection is triggering when I turn up the volume.
Sorry for bursting in on the thread, I found this whilst googling WLX-7.
Thanks, Ian
__________________
When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk
JA-88D Class A, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"
  Reply With Quote
Old 17th October 2012, 07:34 PM   #6
UV101 is offline UV101  England
diyAudio Member
 
UV101's Avatar
 
Join Date: Dec 2008
Location: Oxford
Sorry guys, just seen how OT this is but I can't remove the post now :-(
__________________
When Bitstream came out, I thought, “my God, what are we going to do...?” Ken Ishiwata http://www.hifisounds.co.uk
JA-88D Class A, Audio Aero Capitole MKII, Focal and Kimber "Leave Nothing as Standard"
  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
MOSFET based DC Speaker Protection benproiii Solid State 5 16th January 2012 06:55 PM
DC speaker protection for Sure class-D amps?.. OzOnE_2k3 Class D 23 12th April 2010 02:43 AM
Hall Effect DC Speaker protection Spiny Everything Else 2 9th January 2010 04:55 PM
we can offer power module of DC/DC Converter & AC/DC Adapter auling Vendor's Bazaar 0 12th May 2009 03:48 AM
PC speakers amp runs ac?? Does DC work? NeMeSiS_singh Power Supplies 8 14th June 2006 10:35 AM


New To Site? Need Help?

All times are GMT. The time now is 09:23 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