miniDSP 12V trigger (miniDC, "x8" boards) and home audio gear - diyAudio
Go Back   Home > Forums > Commercial Sector > Manufacturers > miniDSP

miniDSP Low cost, modular Digital Signal Processor (DSP) kits for the DIYer from miniDSP.

Reply
 
Thread Tools Search this Thread
Old 5th June 2012, 03:34 PM   #1
Pallas is offline Pallas  Pakistan
diyAudio Member
 
Join Date: Aug 2004
Location: ATL
Default miniDSP 12V trigger (miniDC, "x8" boards) and home audio gear

I realize for the EE's this question is probably so elementary as to be completely ignorant. However, I'm not an EE, and my last academic exposure to such things was AP e-mag in high school way back in the late 1990s. Installing a miniDSP board in a box is about the most ambitious DIY electronics (as opposed to DIY loudspeaker) project I'm competent to consider. So please bear with me.

This question applies to both the miniDSP "times 8" boards (both of which have 12V trigger functionality built-in) and the miniDC Isolator unit for the 2x4 boards, because they all have the same remote connection scheme. Though in my case it is specifically about the 8x8 board.

I'd like to turn on my miniDSP 8x8 with a 12V trigger input from my AVR, and then use the miniDSP's delayed REM-out to provided a delayed turn-on for my amplifiers.

However, the 8x8 (like the miniDC isolator) has a single-wire connector for REM in, and another for REM out. While single-pole 12V trigger is the norm in car audio, in home audio two-pole connectors are usually used for 12VDC triggers. For example, here is a representative 12V trigger input on a pro audio amplifier (ElectroVoice CPS 8.5) that I have verified to turn on/off from a standard consumer home audio AVR's 12V trigger.

Click the image to open in full size.
(The words obscured by the Phoenix terminal, if it was not obvious, are "POWER REMOTE")

(NOTE: if I were just using this amp, I'd not worry about turn-on thumps and the like, because of the provided power-on delay. But I'm using two amps, and the other doesn't have a variable turn-on delay.)

Perhaps the difference because there is already a 12V ground connection in car-fi gear, but not in home gear? And if so, does that mean that I should simply tie the grounds for REM-in and REM-out to the 12V neg lead of the PS?
__________________
Serious Audio Blog
  Reply With Quote
Old 6th June 2012, 11:06 AM   #2
Pallas is offline Pallas  Pakistan
diyAudio Member
 
Join Date: Aug 2004
Location: ATL
FWIW, answered on the miniDSP forum. Reposted here in case someone else asks:

Quote:
Originally Posted by devteam
Your setup is just similar just at the difference that you need to add a ground wire between the unit (i.e. ground is ground.. :-)

So the Hot Lead is the REM in or out. The G is the Ground to be connected to the ground of the green header (i.e. pin next to the REM i/o on the green 4 pin connector.

Makes sense?

DevTeam
__________________
Serious Audio Blog
  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
Enable 12V trigger with audio signal jmbulg Power Supplies 15 9th February 2011 06:26 AM
Audax 13"x8.25" units stee-b Full Range 3 13th September 2010 04:19 PM
"the Prius of home audio" - a friend's project star882 Chip Amps 11 13th January 2010 02:24 PM
12v UPS relays Trigger, 1 ~ 11v no trigger jacquesl Power Supplies 5 28th August 2007 05:30 PM
4"x8" Port = two 4"x4" Ports for MLTL??? More Complex??? OTMOPO3OK Full Range 2 17th January 2005 03:58 PM


New To Site? Need Help?

All times are GMT. The time now is 01:30 PM.


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