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

Crown amp trigger help
Crown amp trigger help
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 6th July 2018, 12:43 AM   #1
ol mcdonald is offline ol mcdonald
diyAudio Member
 
Join Date: Jan 2017
Default Crown amp trigger help

This may have been posted elsewhere and I apologize in advance if so. Seems like a stupid question considering the high level most of you guys seem to be working, but here goes.

I am building a new home and am curious how to switch on amps. I am using a DSP/X-over and have two Crown amps feeding bi-amped speakers, one for MF/HF and one for LF. They are connected to a sequencer to turn them on and off, I also have a Crown XLS 2502 for my sub that is connected directly to a 20 amp circuit. It does not have a "traditional" 12v trigger, rather it has "Remote power control through a contact closure". In layman's terms I suppose that is a switch.

Is it possible for a person to make a simple circuit with a relay activated by the 12v trigger signal from one of my other components that would close to create the "contact closure" to turn on my sub amp? If this would in fact work, are there "off the shelf" components I can purchase to build something like this? I have built some lightweight projects in the past like a power supply, crossover for a sub etc. and am able to solder, read simple circuits etc and wouldn't mind building something my self.

Thanks in advance for your help.
  Reply With Quote
Old 8th July 2018, 04:27 PM   #2
MAAC0 is offline MAAC0  Portugal
diyAudio Member
 
Join Date: May 2010
Have just read the manual.
What happens when You short pin 1 and 2 of that AUX connector ?
If there is a bridge what happens when You remove it.?
  Reply With Quote
Old 8th July 2018, 05:33 PM   #3
ol mcdonald is offline ol mcdonald
diyAudio Member
 
Join Date: Jan 2017
To be honest, I don't know. I am building a new home and just thinking ahead as to how to make it all work! The amp is brand new and sitting in it's box in an overseas container. I am still several months out before moving in but like to be prepared, particularly if I need to build something.

From what I gathered reading the manual, shorting 1 and 2 will turn the amp on. "Remote power control through a contact closure." But that's just my take....why couldn't it have a "normal" trigger?

Thanks again!
  Reply With Quote
Old 11th July 2018, 02:18 AM   #4
ol mcdonald is offline ol mcdonald
diyAudio Member
 
Join Date: Jan 2017
Quote:
Originally Posted by MAAC0 View Post
Have just read the manual.
What happens when You short pin 1 and 2 of that AUX connector ?
If there is a bridge what happens when You remove it.?
So, Pete from Crown says..."A contact closure on the Aux jack’s sleep contacts will shut down the amplifier. Removing the closure will turn it back on. A small amount of current is still drawn for the sensing circuit but it is minimal. Hope that helps, Pete"
  Reply With Quote
Old 12th July 2018, 11:07 PM   #5
MAAC0 is offline MAAC0  Portugal
diyAudio Member
 
Join Date: May 2010
I would look for a 555 in Biestable mode circuit solution.
You add a transistor on the output which activates the relay.
  Reply With Quote
Old 13th July 2018, 08:51 PM   #6
ol mcdonald is offline ol mcdonald
diyAudio Member
 
Join Date: Jan 2017
Quote:
Originally Posted by MAAC0 View Post
I would look for a 555 in Biestable mode circuit solution.
You add a transistor on the output which activates the relay.
In laymens terms??
  Reply With Quote
Old 13th July 2018, 11:30 PM   #7
MAAC0 is offline MAAC0  Portugal
diyAudio Member
 
Join Date: May 2010
Fist You must determine if the trigger 12V Voltage is always present in order for the amps to stay on. If this is the case You can use a transistor to drive a relay to short the pins on the amp. If it is only a pulse trigger signal You have to use a flip-flop circuit in order to maintain the relay activated after the pulse.
Now the question is how to switch it off again. I know there are "télérrupteurs" used in domestic house installations. Sorry for the French. Don't know the correct English term. These are relays to switch on and off a lamp from many locations.
transistors - Control 12V relay with 3,3V - Electrical Engineering Stack Exchange use a larger resistor say 4.7k for 12V.


Teleruptor - Consultas Sin Clasificar - YoReparo this works with 220V but I'm sure there are lower Voltage versions.
  Reply With Quote

Reply


Crown amp trigger helpHide 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

Similar Threads
Thread Thread Starter Forum Replies Last Post
FS: Two Crown XLS 1502 Amps & One Crown XLS 1000 Amp jimiw Swap Meet 3 16th July 2016 04:54 PM
Convert 16V DC trigger out to 12V DC trigger in BengtGag Construction Tips 6 6th June 2015 05:18 PM
Audiolab 8200AP open/close trigger convert to 12V trigger? tifflee Digital Source 7 14th December 2013 09:26 AM
DIY 12v trigger hbech Class D 7 20th September 2011 10:31 PM
12v UPS relays Trigger, 1 ~ 11v no trigger jacquesl Power Supplies 5 28th August 2007 05:30 PM


New To Site? Need Help?

All times are GMT. The time now is 02:57 PM.


Search Engine Optimisation provided by DragonByte SEO (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Resources saved on this page: MySQL 15.79%
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2018 DragonByte Technologies Ltd.
Copyright ©1999-2018 diyAudio
Wiki