15v phantom power & undo channel inversion - diyAudio
Go Back   Home > Forums > General Interest > Car Audio

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 13th January 2011, 03:19 AM   #1
diyAudio Member
 
Join Date: Aug 2008
Location: Lafayette, Louisiana
Default 15v phantom power & undo channel inversion

I've been having a mad scientist idea that I wanted to try, and I really want to try it even more after eating lunch with a friend last week.

How hard would it be to create a circuit that provides phantom power and reverse the channel inversion used to bridge old school Orion amplifiers through the DIN plug?

I ask because I have one of these negative feedback controllers:
Click the image to open in full size.

Click the image to open in full size.

And I've been wondering if I could adapt it to work with something other than the Orion 280GX that it was designed for.

Also, I believe this is the wiring spec for the MIDI/DIN plug:
Click the image to open in full size.

For some reason, I am thinking that 15v phantom power will be easier to achieve than reversing the channel inversion. I'm handy with a soldering iron, but circuit design is something I lack.
  Reply With Quote
Old 13th January 2011, 11:25 AM   #2
diyAudio Member
 
Join Date: Nov 2003
Location: Louisiana
Unless this circuit modifies/distorts the signal, it's not likely to make a difference. All it can do is compensate for the effect that the speaker wire has on the signal. Unless you're using very small wire or have to run it a very long distance, this isn't likely to be beneficial.
  Reply With Quote
Old 24th March 2011, 05:57 PM   #3
troystg is online now troystg  United States
diyAudio Member
 
troystg's Avatar
 
Join Date: Apr 2004
Location: In a dream... Please don't wake me.
That "circuit" is an electronic suspension system.. ie a servo. It contain an xo, bridging circuit, comparator circuit, loudspeaker modeling unit and signal modification circuit.

The bridge circuit in the negative feedback unit (NFU) can be defeated for an amp that has a built in bridging switch. The "issue" is to make a stand alone phantom power supply to provide > +/- 12 VDC to the NFU. As you can see in your picture that voltage is regulated down to +/- 8 VDC.
__________________
Troy
Thinking positive doesn't make things better, it makes you a better person.
  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
+/-15V from +48V Phantom Pilbromatic Parts 4 9th August 2009 05:46 AM
Circuit Sanity Check: +15V, -15V, +9V Power Supply miallen Power Supplies 4 18th July 2009 07:18 PM
+/-15V power to a TI PGA2310. 15V regulators sufficient or do I need adjustable?? nick_g_evans Parts 2 16th July 2008 11:50 AM
Power Supply For Pre/ Head Phone & Phantom... (PCB) Ayne Power Supplies 0 28th April 2007 04:10 PM
Using 15V laptop power supply on t-amp aussiebuddha Class D 9 20th September 2006 12:44 PM


New To Site? Need Help?

All times are GMT. The time now is 12:37 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