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The Musician Forums => Music Technology & Pro Audio => Topic started by: greenweenie on April 09, 2006, 08:12:04 PM

Title: Question
Post by: greenweenie on April 09, 2006, 08:12:04 PM
When I'm connecting the stereo out of my V-Amp Pro to my line-in jack, mono siya. Pero when I connect to the mic in, stereo siya. Helllp
Title: Question
Post by: abyssinianson on April 09, 2006, 08:17:03 PM
guitar preamps, mic preamps, and other Di devices that are going through a line-in jack are meant to be recorded mono. if you want to have stereo guitars recorded, you will have to record through your line-in jack and specify the audio to record into a stereo track. your mic jack is wired for stereo.
Title: Question
Post by: KitC on April 10, 2006, 12:32:57 AM
It helps if we know what soundcard you're using.

Most, if not all, consumer soundcards have had their analog I/O color coded in the last 5 years. For most of us, the most important colors are: Lime Green - Line Out and Light Blue - Line In. The Mic In is usually  pink in color. Note that with some soundcards and onboard audio, changing from ordinary stereo operation to surround mode (5.1, 7.1...) will cause some inputs to switch into output mode, often sacrificing the line and mic inputs.

Use the Vamp Pro's unbalanced 1/4" outs and use a good Y-cable; preferably, make one yourself if you're handy with a soldering iron. I've seen some y-cables and y-adapters that sum to mono. Remember that the tip in a stereo plug, be it 1/4" or 1/8", is always the left channel.
Title: Question
Post by: BAMF on April 10, 2006, 12:51:08 AM
Quote from: abyssinianson
guitar preamps, mic preamps, and other Di devices that are going through a line-in jack are meant to be recorded mono. if you want to have stereo guitars recorded, you will have to record through your line-in jack and specify the audio to record into a stereo track. your mic jack is wired for stereo.


Hmmm...lam ko kaya stereo yung mic jack it's because it uses the middle connector for phantom power.
Title: Question
Post by: KitC on April 10, 2006, 12:56:40 AM
Lemme guess... malamang open ung 'sang lado kaya tunog mono... waddaya say, BAMF?
Title: Question
Post by: BAMF on April 10, 2006, 02:42:50 AM
Actually AFAIK, the mic in for the soundcard uses a stereo jack, but only the tip is used to take in audio. The middle ring carries a DC voltage which is used by the usual condenser mics connected to the PC. Ang alam ko, the line in is stereo.
Title: Question
Post by: starfugger on April 10, 2006, 07:49:36 AM
yep BAMF, yan din pagkaka-alam ko, correct me if im wrong. i used to record using an ordinary soundcard's line in.  cassette tape to hard sisk. i always get a stereo signal that way.

greenweenie, when you say you get a stereo signal thru your mic in, do you see any distinction between the left and right channel? just to take away some confusion, an identical left and right signal is still a mono signal. what do you mean when you say you get a mono signal from the line in, does the meter show only one signal coming in? if so i think there something wrong with your cables or your output.  try to experiment using a cassette or cd player. record the output thru your soundcard's line in an see if the signal is still mono.  are you using a stereo jack? if you see only one ring at the tip of your jack then it's no surprise you are getting a mono signal.

hope this helps.