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audio In to Output to speakers
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Fresh-Faced Recruit
Join Date: Jan 2003
Status:
Offline
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I have my turntables hooked up to my Audio input but I cant figure out how to send it to the output. Under the Input tab in sys prefs I can see activity but cant figure out how to get that to my speakers that are hooked up into the headphone jack, which I am assuming is my audio Out
thanks
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Mac Elite
Join Date: Oct 2000
Location: usa
Status:
Offline
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it sounds like you want to use your computer as an amp. you would probably need a program to do that. without the software, from what i know, you would have to "record" what you are playing and then play the sound back after it is turned into a digital format.
i'm no expert, but that sounds like the problem 
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"The only time that man gets to actually leave a physical mark upon this earth is in death, and even then, it is only a gravestone proclaiming his demise"
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Admin Emeritus  Join Date: Oct 1999
Location: Zurich, Switzerland
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Unlike OS 9, OS X does not have a playthrough option in the system prefs. But you can easily do it with a little program called Playthrough FX.
tooki
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Senior User
Join Date: Jan 2001
Status:
Offline
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You need an interface between your turntable and the Mac. I think it's some sort of line converter- I'm tired and dont recall the name. It's a common item. They are available at Radio Shack.
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"-Dodge This"
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Mac Elite
Join Date: Oct 1999
Location: Bloomington, IN, USA
Status:
Offline
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Keep in mind that most turntables do not output the same signal as standard line level. I believe that it has a different impedance or something like that. You may have a phono stage in your units that will create this line level and make it acceptable to your machine. This is why there are acutally Phono ports on receivers and pre-amps instead of "Audio 4" etc.
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Fresh-Faced Recruit
Join Date: Oct 2002
Location: St. Louis, MO
Status:
Offline
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Yeah, phono inputs boost the signal strength by something like 40+db to line nominial voltage, and they raise the impedence to true output level impedence. They also equalize the music. When records are recorded they use a standard EQ with very low bass and mids, to keep the grooves consistent in shape. The phono amplifier 're-equalizes' it to its original levels.
Some turntables have their own phono amplifier, and have true line outs, but most turntables need to go through a phono stage. Radioshack sells a modest one that runs on battery power for 25$ or so. You can build your own, or buy hi-fi ones from anywhere between 50$ and 10,000$ or more. Many home receivers have phono amps, and nearly all crossfader type dj mixers have phono amps.
peace,
sam
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