speaker protect - diyAudio
Go Back   Home > Forums > Amplifiers > Solid State

Solid State Talk all about solid state amplification.

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 30th May 2008, 08:40 AM   #1
diyAudio Member
 
Join Date: Jun 2004
Location: manila
Default speaker protect

Hello guys,

As i know, most of the speaker protect i have seen is for two channels, left and right.

Now, a friend bought a preamp from junk shop but needs 3 amps
i.e. left-right and a sub. I told him to use the M250 speaker protect but needs one more for the sub and i can't find single one.

Needs some help here, i am a newbee and just starting to learn some basic electronics but sure can make my own if theres enough guide to follow. A schem, pcb with parts placement will be
fine.

thanks.

john
__________________
norstar815
  Reply With Quote
Old 30th May 2008, 06:08 PM   #2
jaycee is offline jaycee  United Kingdom
diyAudio Member
 
Join Date: Apr 2004
Location: Norwich, UK
Do you mean this circuit?
Click the image to open in full size.

If so, you can just leave out one of the 22K resistors, and associated speaker connection.
  Reply With Quote
Old 31st May 2008, 11:35 PM   #3
diyAudio Member
 
dutch diy's Avatar
 
Join Date: May 2001
Location: NL, The Hague
Send a message via ICQ to dutch diy
Default Speaker protect

Hi,

Maybe this device can work for your sub-protection.

http://quadrevisionspot.blogspot.com/2008/03/dada-loudspeaker-protection-delay-pre.html


Jos
__________________
J-amp powers Avantgarde-Acoustic Trio
  Reply With Quote
Old 1st June 2008, 12:31 AM   #4
Nordic is offline Nordic  South Africa
diyAudio Member
 
Nordic's Avatar
 
Join Date: Sep 2005
If I understand you allready have a 2 channel protection...

Look at the inputs... I suspect you will see they are both connected to the same point.. pin on the module, only seperated by 2 resistors..... it this is the case... you can hardwire another resistor into that point to add a 3rd cahnnel...

Lol, I actualy tested a protection module to destruction levels tonight, shot a nice big chip off the chip even made a small flame, but it died quickly. (lol, pun, I know)...
  Reply With Quote
Old 1st June 2008, 05:40 AM   #5
diyAudio Member
 
Join Date: Jun 2004
Location: HKSAR
Hi jaycee,

Your link for the circuit doesn't seem to work, think you can show it again?
  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
speaker protect schema here tadiam Solid State 33 1st October 2010 12:16 PM
FS: 2x Elektor EPS 880092 3 (speaker DC protect circuit) oxygene Swap Meet 0 11th December 2007 03:04 PM
amp goes to protect, why? eeyore757 Subwoofers 6 22nd March 2007 12:29 AM
a very simple speaker protect just for class-d fumac Class D 15 16th February 2007 04:21 AM
protect your amps skyraider Tubes / Valves 20 9th October 2004 09:39 PM


New To Site? Need Help?

All times are GMT. The time now is 01:47 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