how to make a audio source selector? - diyAudio
Go Back   Home > Forums > Source & Line > Analog Line Level

Analog Line Level Preamplifiers , Passive Pre-amps, Crossovers, etc.

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 26th November 2007, 10:02 AM   #1
no183 is offline no183  Malaysia
diyAudio Member
 
Join Date: Nov 2007
Default how to make a audio source selector?

hi to all firstly. i have 2 computer connected just beside.. but unfortunately i have only just 1 pair of speaker, so i decided to do 1 audio source selector, mean when i dint use 1 computer, i wanna switch the speaker for another 1. i have manage to do the stuff, but the problem is, the output of the sound have "echo" and the sound of singing, is very low.. just can hear the music (very loud) almost like digital d, anything i done mistake?
  Reply With Quote
Old 27th November 2007, 10:12 AM   #2
diarav is offline diarav  India
diyAudio Member
 
Join Date: Dec 2004
Location: Bangalore India
no183,

Can you post what you exactly did? some schematic,layout etc.,
__________________
Regards,
Din
  Reply With Quote
Old 27th November 2007, 03:00 PM   #3
no183 is offline no183  Malaysia
diyAudio Member
 
Join Date: Nov 2007
the diagram as attach below.. but wat i get is the sound very poor, ( have echo, only small song lyric hear,like in karaokae mode) i duno did i done something wrong.
Attached Images
File Type: jpg untitled.jpg (26.0 KB, 402 views)
  Reply With Quote
Old 27th November 2007, 03:34 PM   #4
tade is offline tade  United States
diyAudio Member
 
Join Date: Feb 2005
Location: Ralieigh nc
Send a message via AIM to tade
on side must be out of phase. What that means is that the + and - should be switched. Usually vocals are mic'ed with one mic only. This makes the vocal track usually mono, and mono signals cancel nicely when the sources are out of phase. Musical instuments on the other hand are often recorded stereo and/or are panned to the left or right to provide a soundstage. These components will not cancel well when they meet out of phase. This provides the karaoke effect which can be desireable in certain circumstances. Not here of course.
double check your wiring. Also, you have posted more of a block diagram. if you could post a more detailed schematic i bet the problem will be obvious.
Good luck
  Reply With Quote
Old 27th November 2007, 08:37 PM   #5
no183 is offline no183  Malaysia
diyAudio Member
 
Join Date: Nov 2007
here sum of the pic
Click the image to open in full size. Click the image to open in full size. Click the image to open in full size.
  Reply With Quote
Old 27th November 2007, 08:37 PM   #6
no183 is offline no183  Malaysia
diyAudio Member
 
Join Date: Nov 2007
oh yea, 1 more, the earth(common) for the jack, i dint solder on the board because i thought it dont needed?
  Reply With Quote
Old 27th November 2007, 09:19 PM   #7
diyAudio Member
 
Craig405's Avatar
 
Join Date: Jul 2005
Location: Sussex
thats the problem, you need to switch the earths over aswell as the signal or it will sound funny and quite likely quite!

This should be easy enough to add on if your switch has enough connections to accomodate 2 more wires to switch.
the signal needs a reference.
  Reply With Quote
Old 28th November 2007, 12:36 PM   #8
no183 is offline no183  Malaysia
diyAudio Member
 
Join Date: Nov 2007
may try tomorow, anyways thxs for advice
  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
Stereo source selector IC speakerguy79 Parts 4 29th November 2008 02:16 AM
source selector mnr102 Multi-Way 0 25th February 2008 12:11 AM
To make Speaker Selector with Remocon yangsmm Parts 0 3rd October 2006 04:50 PM
Here's a source selector DragonMaster Everything Else 0 7th August 2005 04:52 AM
Preamp Source Selector Brownlow Solid State 0 28th June 2002 02:32 PM


New To Site? Need Help?

All times are GMT. The time now is 06:22 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