PowerPC :: Noise In G5 Audio Line Out
Jul 29, 2008
I have a G5 twin processor which I bought just before the Intel chip model. It has all sorts of hum and noise in the audio line out when connected to my larger home music system. I have Applecare and the Apple Store tells me that they need to replace the motherboard. I'm awaiting that part to come in now. However, it sounds to me more like old fashioned transformer hum and I'm wondering if anyone else has had this vexing problem -- and if so, how it was finally resolved? I'm too old to keep hauling the heavy unit around much more.
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Nov 5, 2007
I am trying to hook up the digital audio output on my cable box to the digital in on my dual 2.0 G5 running 10.4.9, 1 gig RAM. I have HDMI and component video out to monitor, but I use JBL creature speakers and sub for audio.
I have the propper cables and routing, sounds prefs set to digital in, and line out, to go to JBL creatures and first I get no sound at all. If I start AudioHijack and use same input and output settings all I can get is a hissing/clicking sort of sound. Same with using Soundsource and LineIn.
Audio MIDI Setup only shows or giveds me Built-in Audio for selections under system settings and properties for. Ausio Input and output show Master stream grayed out and I selected digital in and Line out for my sources and no change. Both ar set to 441000.0 Hz 2ch-24bit as well.
Information:
Dual 2.0 G5
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Feb 29, 2012
Seems like it should be a straight forward deal, but it's not obvious how to make this happen. I can tell the audio is coming in, as the input levels are reflected under System Pref's. But I can't hear the audio on the line-out speakers and there doesn't seem to be an option to explicitly route the audio.
Info:
Mac Pro, Mac OS X (10.6.8)
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Jul 27, 2007
I have audio that is being sent to my MBP through an audio in line that I would like to monitor for audio quality. The only way I know how to listen in real time to the audio is by way of Audio Recorder, but it seems a little unnecessary to have a recording application open simply to listen to my media that is being sent in. Is there a feature already part of OS X that allows me to turn this on? I looked in system prefs, but couldn't find anything to enable this. I will resort to audio recorder if I have to, but would be very happy if this was already a feature.
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Apr 18, 2010
when you're recording, will the sound quality of the dual function line in audio port on the 13" be as good as the dedicated one on the 15"?
edit: the reason I'm wondering is because I want to convert old collections of vinyl records into digital copies at the highest quality possible and need to know if the 'line in' on the 13" will work good for that.
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Mar 23, 2009
I have a 2nd monitor and hooked up my xbox 360 to it. I have it connected through HDMI and then have a regular audio jack going from the monitor to my Mac Pro. When I open up my sound preferences and select: Line In - Audio Line In the "Input Level" bar goes up and down meaning it is registering or hears the sound coming from my xbox.
For some reason though, the sound will not output from my Mac Pro. My speakers which are connected to Line Out: Built In Line Output still outputs sound coming from my mac pro but it won't output the sound from my 360. Is there a remedy for this?
So quickly again.
Line In - Audio Line In is "hearing" the sound from my xbox 360 as the "Input Level" bar goes up and down.
Line Out - Built In Line Output still outputs sound from my Mac Pro but not the 360.
Is there a way to fix this?
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Jun 11, 2008
I just bought a Mac Pro. I immediately installed 2 GB of RAM and four large hard drives without even booting the computer while it was stock. Anyway, the machine is connected to JBL Creature speakers via the (analog) line-out port. However, unless I also have the headphone port connected to the speakers with a splitter, I get a really high pitched squeeling regardless of volume level. And yes, my sound preferences are set to the analog line-out setting.
Also, when I have both ports connected to the speakers and the squeeling is gone, I get hard drive read and write noise through the speakers. It's most apparent in Final Cut Pro and Motion. I'm hoping that, if it needs to be repaired, Apple will go through my local Apple-certified shop (not an actual Apple Store) instead of having to send it in.
Mac Pro 2.8 GHz Quad
Mac OS X (10.5.3)
4 GB RAM
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Nov 6, 2009
I plugged in my speakers I used to have plugged in to my Mini Mac to the audio line out on the back of my new Mac Pro, and it doesn't produce any sound out the speakers. Yes, I know how to toggle preferences for audio line-out. Makes no difference. When I select "line-out" in preferences, my speakers will play through the front headphone jack, but not the audio line-out on the back of the machine. Why does audio line-out not work like it did on my Mini Mac?
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Jul 9, 2008
I got a new MacBook a few weeks ago, and quickly found the internal microphone to be lackluster for my musical needs (I often record myself singing, as part of my voice training). So I got out my microphone that I routinely used on my PC, plugged it into the line in port, changed the appropriate settings, and it was good. After I was finished, I switched the default back to the internal mic. However, since that first time, the audio line in port has not worked correctly.
If I go to the Sound preferences section, and select "Line In", it shows no input on the meter there, no matter how much sound I'm making with the microphone. The meter works just fine showing sound being made into the built in mic when that's selected, but not for the line in option. Not surprisingly, neither GarageBand or Audacity is receiving any input (and the appropriate options are selected in the programs to draw from the line in port). Is there some option I'm overlooking within the Mac, or is my line in port faulty?
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Sep 8, 2008
I've got a Mac Mini at home, but I'm at work now and just have a quick question. I've noticed on the Apple marketing blurb that the Mini audio output will do Line Out as well as headphones. Do you have to switch the output over in Audio/MIDI setup or something?
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Jun 17, 2009
My 2.4 Aluminum MacBook has a very serious problem, but only with the line-in port. The headphones work fine through the line out. When I plug the microphone, the built-in mic still works,]. I tried everything, it just doesn't work at all, i plugged in the microphone and changed the system preferences manually and did everything with all the applications, but still, nothing is working. I have had this MacBook for 2 weeks now. I wish I waited couple of days for the pro.
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Dec 6, 2009
I very confused about my line in port. I'm trying to hook my macbook up to my 4 channel PA using a 1/8" input jack, I am using garageband, but I get no response. the driver is switched to built in line in port but still nothing. I find that when I unplug it a little bit, the computer picks up the sound but there is a strange fuzz sound that accompanies it. So basically, the input does not work when I plug it in all the way. I know it worked before, perhaps I blew the input?
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Dec 27, 2009
Would a standard 3.5mm audio input cable work? Would it fit in the port on my MacBook Pro? These are the cables I am looking at: [URL]. Port Image. I am looking at recording music from my Record Player to my computer with this Tutorial: [URL].
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Aug 8, 2010
Is there any way to setup the macbook air so that it can accept audio in? I want to play sound from a game console on the air's speakers using an audio cable.
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May 31, 2009
I want to send a signal from my guitar processor to my iMac for recording in applications such as Garageband. Using the digital line-out from the processor I tried to connect to iMac using a 3.5mm stereo cable. However, when trying to set up a track in Garageband I could not get an input signal. In the MIDI/Audio app I have set input and output devices to built-in devices, and in sound preferences I have set the track to receive from the line-in jack. I messed around in Garageband with all the input options for the audio track but I still couldn't register a signal, yet my processor LED meter shows it's outputting fine. Do I need a special cable or something? I can't understand why this topic isn't fully addressed in the supporting literature for Garageband or Logic or in the iMac OM.
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Dec 13, 2008
I've read all the manuals, and the only thing that I can muster is that the audio line out port on the back of my Mac Pro "can be connected to powered speakers". So I connect it to powered speakers, and nothing happens. Is there some setting somewhere that I am missing?
I've connected it to the front headphone jack and got sound from the speakers. But I'd prefer to keep the cables at the back out of sight, hence wanting to use the line out port. The same speakers work fine with line level inputs from a Minidisc player, so I'm just wondering if the sound card has a dead port on the back.
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Feb 22, 2012
I started to have a perplexing problem that I narrowed down to the audio in-put port on my Mac Pro (MacPro3 ,1). It was working fine then the sound level increased and the quality became distorted (like a "fuzz base" but affecting all sounds)I was in the process of digitizing records, and believed the record played broke. So I got a new record player (audio-technica AT-LP120-USB). The same thing occurred with the audio in-put port, so I switched to the USB port and the audio was fine. I also checked with music already on my HD and it played fine. Consequently it has to be the in-put line port and/or a software issue.
Info:
Mac Pro (Early 2008), Mac OS X (10.6.8)
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Mar 20, 2012
Is there a command line tool I can use to record audio on my intel imac? In Linux, I use the arecord tool and was wondering if there is something similar for the Mac. I do not want to use a GUI tool like Audio Hijack Pro because I already have and use that app. I now prefer to use a command line tool instead.
Info:
Intel iMac 24, Mac OS X (10.7), 2 GB RAM
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Jun 29, 2012
I'm trying to plug in and use an external microphone to record a screen capture. Sound gets through the headphones great but, looking at Input Sound in the Sys Pref, the Line In device does not pick up any sound when I speak into the mic. If I switch it back to the Built-In Internal Microphone device it picks up my voice fine. In the Audio MIDI Setup, the Built-in Input device is selected as the device to be used for sound input.There is a switch on my headset to mute or unmute the mic and I've tried it in both positions. There is a volume dial on my headset (presumably for the headphones) and I've fiddled with that too. I've moved the Input volume for the Line In Audio Line-in port device all the way up and still it hasn't picked up a thing. I have a Mac os x Lion on a Macbook Pro and using a 3.5 mm mini-jack headset with two cables, one for the headphones and one for the microphone.
Info:
MacBook Pro (15-inch Late 2011), Mac OS X (10.7.4)
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Dec 2, 2009
getting my audio from an XBOX through the Optical Audio Input to play through to the Line Out port.The Input tab of the Sound Preference is set to Digital Audio in and is receiving a signal on the meter but no audio plays through to the speakers plugged into the line out port.
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Apr 28, 2009
I was messing around with Garageband today with my instrument and then suddenly there was a loud pop, and then audio went out. What's going on?
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Oct 22, 2007
I'm connecting my mbp to my new lcd sony bravia via dvi to hdmi lead and then connecting the sound via headphone jack to tv's 2 x phono, however i'm getting lots of audio noise bleeding through tv speakers underneath the main audio feed, i'm certain that its not a dodgy lead as iv'e tried 3 of them, however if i unplug the dvi lead the noise goes away, is it possible that the hdmi input is conflicting with the phono connection somehow.
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Nov 8, 2009
I am simply trying to connect my guitar to my mac by using a 1/4 to 1/8 adapter and inserting it to the input on my mac. Once iv done this i go into my sound in system preferences and it shows on the volume bar that its maxing out and once i go into garage band to try and record something all i hear is a "click click"! I have no clue what it is?
Mac:
2.1GHz Intel Core 2 Duo
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May 9, 2012
Why can't I hear my music keyboard when it is connected thru the Analog Audio line-in port? Looking at the System Pref. - Sound menu - in-put - Line in Built-in Audio, I can see activity on the input levels when I press the Kawai piano keyboard but no sound is heard. All other sound systems- I-tunes etc are operating properly.
Info:
power mac G5, Mac OS X (10.5.8)
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Jun 3, 2014
When I sync one audio file with one video file the video file is always placed in the primary storyline and the audio file is always placed under it. And the new syncronised clip is named afte the video file.
when I sync multiple audio files to one video file. It seems to be random what file endsup in the primary storyline of the new compound clip, most of the time is seems to be one of the audio files. This is troublesom as the syncing acuracy is then limited to the frame as the smallest incrament of adgustment. Also, it menas I have to manualy change the names of my now syncronised clips as the names are not consistant making sorting dificult. (This all results in a lot of time spent fixing this behavoir and realy dampens the advantages of the sync feature.)
the video should not be the primary track in a new syncrosnised compound clip and I can't find any link between my behavoir and the resulting choise of which tile is the primary sortyline track.
Info:
Final Cut Pro X
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Nov 2, 2007
I am trying to hook up the digital audio output on my cable box to the digital in on my dual 2.0 G5 running 10.4.9, 1 gig RAM. I have HDMI and component video out to monitor, but I use JBL creature speakers and sub for audio.
I have the propper cables and routing, sounds prefs set to digital in, and line out, to go to JBL creatures and first I get no sound at all. If I start AudioHijack and use same input and output settings all I can get is a hissing/clicking sort of sound. Same with using Soundsource and LineIn.
Audio MIDI Setup only shows or giveds me Built-in Audio for selections under system settings and properties for. Ausio Input and output show Master stream grayed out and I selected digital in and Line out for my sources and no change. Both ar set to 441000.0 Hz 2ch-24bit as well.
Information:
Dual 2.0 G5
Mac OS X (10.4.9)
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Oct 13, 2008
I recently got my MBP and I noticed there's a issue with headphone audio distortion. When I plug in my earphone or headphone without any sound playing, there's a clear whining noise like zi zi zi sound which is really clear, sounds like old 80s radio noise. When I play the music, of course it was covered by the sound of music but it really bugs me out knowing that I cannot listen the pure sound of my music. The volume of this distortion noise would not change while I turn up or down the volume of my MBP. I asked someone professional, he said it's a famous issue of screen frequency disturbing audio in macbook pro.
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Dec 4, 2010
I was listening to my headphones through my new MacBook Pro this afternoon and an electronic noise started coming through. I am using an external monitor with my computer closed, this sound decreases when I put my hand on top of the closed laptop.
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Jan 6, 2011
just got happy about the fix for the audio / performance problem of the 09 mac pro's. Why should it be different, the next problem knocks at my door, hallelujah...
When I connect my external audio interface (apogee ensemble) to my mac pro, the mac begins to whistle...
As soon as I turn off my interface again, the whistle is away immediately . The sound is definitively coming from my mac pro and I couldn't locate the problem to a fan. I think it's maybe the firewire controller chip? When I connect my external lacie HD I have no problems at all. I have tried it on both ports on the back side with no success.
The whistle is not constantly on the same noise level. Sometimes it's away for a few seconds, it's high pitched and really annoying though. It does not matter if I playback audio or not. Nothing worked though. I experienced the whistle in the past few months sometimes but it was mostly just for a few minutes or so. But in the past few days it was constantly and it never really stopped. This drives me crazy when I have no audio playing and my room is silent !!
I have no other firewire cable (400 to 800) around to test it. Could this be the culprit also?
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Jul 13, 2008
My partner's PowerBook G4 (17-inch 1.67Ghz) which, of course, ended it's Applecare on June 28th, developed a glitch on the screen today: a white line that is 1 pixel wide and runs the length of the screen. It just started out of the blue - no dropping of computer, no power surge, no external reason. One minute it was fine the next it had this line.
Any body ever encounter a problem like this? And if so, how did you get rid of it (either repairing it via a technician or by oneself) and how much did it cost?
I'm betting it's a sign that it's time to get a new computer.
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