29

The microphone and speakers on Apple laptops are located in the lower case, not in the display. What you are noticing are the permanent magnets installed in the display to keep the lid closed without a mechanical latch.


23

Try switching back to your internal speakers with [alt]-clicking on the speaker icon in menubar. Many interfaces don't support volume adjustment and thus the control becomes greyed out.


21

Try restarting the daemon process that processes audio by typing in Terminal: sudo killall coreaudiod This should reinitialize the audio and perhaps reload drivers.


13

The switch in the headphone input could be stuck, you can put in a headphone jack and wiggle it around. Don't be afraid to use a little force, just don't break of the plug. I had this problem too and this solved it for me at least.


9

Did you check the settings in the app "Audio MIDI Setup"? It's in /Applications/Utilities. Sometimes the settings there can get out of whack.


8

Sometimes changing the sound output from your system preferences > sound panel will reinitialize the connection to your hardware. If you only have one output device available, try installing soundflower, just to have a second output in your list that you can cycle through. Also: setting things back up after a reboot is a snap with snow leopard. It can ...


8

Loudspeakers use permanent magnets, unaffected by electricity. If you pass an alternating current through a coil of wire, it will induce a magnetic field in the coil. If you put 2 magnets in close proximity, opposite poles will attract, similar poles will repel. Conversely, if you move a coil of wire near to a magnet, it will generate electricity. This is ...


7

There might be lint in the headphone jack. The lint is partially blocking the contacts, which is causing intermittent behaviour. Get a wooden toothpick. Use the toothpick to remove lint. Be gentle. Some people suggest using a can of compressed air. This is potentially bad because lint can be blown further INTO the device. If you need more information ...


7

To isolate whether this is truly a hardware or software problem.. Launch /Applications/Utilities/Audio MIDI Setup.app If it doesn't already show, select Audio Devices from the window menu Select your Speaker output on the left Sidebar; the tab on the right should show Output highlighted & Input greyed out Bottom right, select Configure Speakers… In ...


6

Try quitting CoreAudio from activity monitor, forcing it to relaunch itself.


6

Try the Boom system-wide volume booster tool. While it's not free, it is cheap: $6.99. See reviews here, here, and here. Below is the description from the product page, and a screenshot: Boom is a simple volume booster and system-wide equalizer that lets you boost the volume of your Mac and your music files. Using Boom is simple. You know the ...


6

Pretty sure it can't be done with the built-in headphone jack. What you could try is getting a USB soundcard (one example, but there are lots out there for $20 or so) to plug your headphones into. That should give you two options in the sound preferences. PS, if you option-click the speaker icon in the menu bar, you get a quicker way to swap inputs/outputs ...


6

Boom is most likely the culprit to your speaker failing. Boom uses algorithms to increase the overall volume of the track to a point without clipping. Pushing speakers beyond what they are supposed to do can and will cause damage to them. The reason the speakers have a maximum volume is that is the safest high fidelity sound they can produce. Here is a ...


5

There is a way to do this but it is difficult and probably not for every user. What happened is Apple does have a "hardware" switch built in, which sends a signal to disable/enable the internal speaker. Because Windows or other OS simply doesn't have such function built in, it will just be a weird signal that does nothing. Option 1 I cannot disable this ...


4

Samething here, I plugged in my headphones and jiggled them a little bit while inside and then pulled them out halfway. Once I did that I could see the volume slider appear and the volume could be adjusted up and down. I pulled them out all the way and they volume went grey again. Pushed the headphones back in and then pulled them out and now everything ...


4

According to Wikipedia: The AirTunes part of the AirPlay protocol stack uses UDP for streaming audio and is based on the RTSP network control protocol.[12] The streams are encrypted with AES, requiring the receiver to have access to the appropriate private key to decrypt the streams.[13] The AirPort Express' streaming media capabilities use Apple'...


4

kextunload is a formal interface for unloading kexts in the Darwin OS and in Mac OS X. Unload the system audio driver: sudo kextunload /System/Library/Extensions/AppleHDA.kext Load it again: sudo kextload /System/Library/Extensions/AppleHDA.kext If not "AppleHDA.kext", another kernel extension in /System/Library/Extensions/ may be what you're looking ...


4

First of all I would check with JBL Support for any known issues, updates, compatibility, etc. On the MBP side of things you could try resetting both the macOS Bluetooth Device List and Bluetooth Controller and pairing your JBL Flip 3 first. However, this will reset all connected Bluetooth devices, including a keyboard and mouse. In other words, this will ...


4

UPDATE: almost 3 months later, multiple updates down the road and upgrade to high sierra, I am sad to report that the issue still persist. I will probably have to return to the apple store to RMA my macbook... I'm sorry I would comment on your post instead posting an answer but new account requires me to have enough rep.... I have the exact same issue ...


4

I've experienced this issue and after a complete re-install and every troubleshooting regarding software tried out, I handed it in at an AASP. They determined the issue to be hardware, and exchanged the top case (which also means no more sticky keys). So my best advise is, take a backup and go visit your local AASP.


3

My speakers are now on my wifi. A bloke called Jason from Pioneer called me this morning and told me to ignore the manual and instead to do the following: Turn the unit off and unplug it from Ethernet and power. Plug the power back in and turn the unit back on — wait for it to power up again. Plug your iOS device (assumes you have one, and that it is ...


3

When a USB device is hot-plugged while VMware is running, I often see a dialog from the VM instance asking if the device should be attached to the VM or to the host OS. It's quite easy to miss this dialog if you have other applications running or if the VM is in a separate workspace. And until the dialog gets its answer, the device isn't attached to either ...


3

Gently pluginng the headphones in and out of the jack solved the issue.


3

Output statistics such are usually reported as Watts. This sounds like what you are looking for. This is, unfortunately, a totally worthless data point, and the reasons why are beyond the scope of an answer on this forum. Your best bet for measuring output, such as decibels/watt/meter, is an SPL (sound pressure level) meter. This would give you the best data ...


3

I had this problem and solved it by plugging in (and then unplugging) my iPod headphones.


3

There are several bluetooth solutions, that should be useful: Phone Amego ($29) - This should do the trick. Works and has interesting features. I recommend it. BluePhoneElite 2 - No longer developed and supported. I see almost everything vanished, but I think you should be able to locate a working copy somehow. Edit: As of OS X 10.10 Yosemite and iOS8 this ...


3

If you don't have Garageband installed you can also use Quicktime. Open Quicktime Go to File -> New Audio Recording. You will see the following screen: Click on the little triangle on the right and choose Built-in Input: Line in as shown in the screenshot. Slide the volume under the record button up until you have the desired loudness.


3

I just had this same problem. I didn't realise straight away but it must have happened after taking out my headphones. I accidentally solved it by doing the following: Make sure your headphones are plugged in and sound is working. Alt-click the speaker icon at the top of the screen, then click on 'Sound Preferences'. On the sound preferences screen, unplug ...


3

This happened to us with an old iPad 2. Specifically, there was some built-up grime in the dock connector/power cord port. It was so bad that the iPad thought what it was sporadically connected to a docked peripheral (like an alarm clock). When you do not see the volume bar, it's because your device thinks that it should delegate volume control to the ...


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