There is a switch to detect whether something is plugged in or not but all it does is supply an input to the system, not connect/disconnect the internal amplifier output.
You can even slow this down by running all your cores flat out (encoding video for instance) - this is software controlled, it is not an ancient transistor radio with a simple mechanical switch. Same in reverse when you pull the plug, the system mutes, switches to internal speakers and then unumtes. The switch inside the headphone jack causes the system to mute the output, switch to the jack and then unmute. You will notice that the music does not immediately start coming through the headphones. Insert headphone jack while wearing just one earpiece. Try this also - Play some music through internal speakers.
Mac headphone jack is also software controlled, it is not a simple analog output controlled by a mechanical switch alone! How do we know this? Look at System Preferences - you can have something plugged into the headphone jack and still direct audio output elsewhere, such as a USB DAC. Why is it definitely not a hardware (bad socket or headphone) problem?ģ. If you do mess with it, and you create a hardware problem by incorrectly applying meter probes or by some other method, then you will have a hardware problem and you won't have a warranty any more either. Secondly, you have a warranty and you should be taking your machine to an Apple authorized service centre if you still don't believe me, not tinkering with it yourself. Firstly, it's pointless - this is nothing to do with hardware.
This is what seems to be happening to most people.Hey night4cat: if you don't know how to measure impedance I strongly recommend you don't do it. Long story short is that the system has and should continue to understand when headphones are inserted, switch to that and switch back when they are not. I've only notice it with third-party apps, in particular Spotify and Rdio. (Though in doing some basic testing I got it to work smoothly again, at least once). Now when I listen to music and unplug the headphones, the sound does not revert back to the internal speakers, unless you use the solution above and switch the "Use audio port for". The system would recognize it and pipe the sound through either of those and eliminate the internal speakers. Prior to that incident I could plug in my headphones and speakers without incident. After changing some things in Sound, i got it working again. I went to turn down the overall system volume and it wouldn't work unless I turned down the application volume. Well the question to ask is what is up with the software? I noticed this problem a few weeks ago when I was syncing some things with Spotify. THEY CAN'T EVEN ADMIT that there's a problem! They immediately say it's a hardware issue - and they refuse to acknowledge the hundreds of posts all complaining about the same issue. And really, they're just like everyone else. It's even more upsetting because they pretend to be the "good" guys of the computer world. I'm seriously, seriously upset with Apple refusing to acknowledge they put out a faulty product. I'll let you people know what the outcome was. I'm going to have to deal with this after my finals. And since I have to revert back to Snow Leopard, I asked Apple for a refund on Lion. I'm not going to pay for something that is NOT A HARDWARE issue. Spend time removing all your files and apps off your computer, and then spend hours putting everything back.
(Even though it's not a hardware issue).Ģ. Yet, there are SEVERAL posts on this website alone that have audio issues after a Lion upgrade.īasically my solutions, according to Apple "geniuses," are:ġ. Apple "geniuses" refuse to acknowledge that this is a Lion issue.