1. Mac Os Disable Sound Except For Program Directv
2. Disable Sound Card
3. Firefox Disable Sound
4. Mac Os Disable Sound Except For Program Xfinity
5. Disable Sound Using Colliders Unity
6. How To Disable Sound

I have a set of surround speakers, connected to my iMac through the headphone jack. I use a switch to control what goes to the speaker set (iMac, iPod, or MacBook/aux). So that I don't have to be constantly unplugging and replugging, I leave the audio cable in the iMac's audio port. This means that when I'm listening to something from another source, I can't hear anything from the iMac unless I unplug the cable.

My school is using a Mac to run the sound for the fall play and I need to disable this sound. I know it can be done, I read how in David Pouge's OS X Leopard: The Missing Manuel, but that's currently several miles away in south Philly at my sister's house.

Is there a way to force sound to come out of the internal speakers, even if there's something in the audio out port?

Nathan GreensteinNathan Greenstein

8 Answers

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 than going to the sound preference pane every time.

robmathersrobmathers

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 signal, it probably requires some highly skilled kext modifier, but I found a way to reset the internal speaker after it gets disabled. It will not stick after a reboot, so you have to do it every time after the booting.

1. Backup your AppleHDA.kext in /System/Library/Extensions/

2. Show package content of this file, go to Contents/Plugins then remove AppleHDAHALPlugIn.bundle.

3. Reload the kext by running

4. Recover the backup file AppleHDA.kext (or your computer won't boot next time you reboot).

Note, if you unplug the headphone, it will still show in your audio device panel. Tested working on a retina iMac. Not working on a retina Macbook (no audio afterward).

Option 2

I have a better way to do this (this method no longer works for 10.12.x+).

1. Download the following files:
   https://mega.co.nz/#!js4gmZbI!xNFCxGT5zPYCS8RLtxk4xZQxNk0oP2sH8RjXbBqgmE0
   https://mega.co.nz/#!ulw13BzD!Y1k564bTSxZrePpPL-si5h65XULwnYeEMwH-l0lSLfI

2. Open up the first download, and drag the second download into it. It will take 10 minutes to install. Then restart your system.

Mac Os Disable Sound Except For Program Directv

You will not have line out and internal speakers both in your sound panel at all time, even when your headphone is not plugged in.

Disable Sound Card

Tested on macOS 10.11, iMac Retina and not working on MacBook Pro Retina.

grg♦aeroxyaeroxy

There's no documented way to override the switch that deactivates the internal speakers when a headphone jack is detected.

The switch that detects whether a 3.5mm headphone jack or mini-toslink is inserted removes the internal speaker from the sound control panel. (Probably at a low enough level that the OS itself cannot over-ride this control.)

Since there isn't a widely known firmware hack, OS hack or hidden preference to disable this detection, you will need to add a USB to headphone device to avoid losing your internal speaker option while a headphone is plugged in.

As long as you don't plug into the Apple port, you can switch amongst the internal and all other output sources using the normal tools (or whatever third party software option you prefer)

bmike♦bmike

I have been trying to get this to work. After moving from my Mac Pro which has speakers and headphones plugged in and I simple switched between them (and even internal speakers) to a new iMac where I have to keep unplugging the headphones to get sound through the iMac speakers. What I'm about to order is a simple USB Sound Card dongle. Small thing that gives an audio jack via a usb, this should then allow me to alt+click the volume icon and switch between built in and headphones as it will see them as separate outputs.

I use Boot Camp to run Windows 7 on my iMac 27' mid-2011. When in the Windows mode I have the choice of internal speakers or headphone jack in my audio output, even although I the headphones permanently plugged into the headphone jack. So Windows have it solved how come Mac can't - after all it's all the same hardware!

The switch that is used is hardware based, so no way to override it except with an audio USB device, or: bluetooth speakers!

You can change the audio (output and input) directly on the Sounds Preference panel. There's an output tab that includes a selector for selecting the output.

If you want something a bit more convenient I used a free program called Audio Switcher from Spike Software. It sits in the task tray and offers quick access to the same settings you see in the Sound Preferences pane.

A faster way to do what @rwr suggested is to option click on the audio icon in the menu bar and select Internal Speakers under Output.

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Anyone know how to disable that cheesy startup sound when I power on my Mac?

If it makes a difference, I'm running Mac OS X 10.6.

studiohack♦macekmacek

5 Answers

I've tried two ways to disable the Start-up songs.

First option is manually stopping the sound by pressing the mute key(F10) every time I wish to shutdown or restart my mac. however, it's the temporary solution.

Another way is using Arcana StartupSound.prefPane.

if you'd installed that one, at your System Preferences >> Other , you'll see 'Start Up Sound'

I've tried this one and it really works on my Mac.

Daniel Beck

Firefox Disable Sound

♦Ye Lin AungYe Lin Aung

OK - I had this problem and it was really annoying.

Why, I asked myself, was the startup sound playing so loudly through the speakers even when I always have my headphones plugged in, and why did it still play so loudly when I had set the volume to the minimum or muted it entirely before shutting down.

Mac Os Disable Sound Except For Program Xfinity

Here are the answers to these questions:

1. The startup sound is always played through the internal speakers, even when the headphones are plugged in.
2. Changing or muting the volume while headphones are plugged in only changes the headphone volume settings, not the speaker volume setting.
3. SOLUTION - take the headphones out, reduce the volume, that will be the volume of the startup chime, then you can plug the headphones back in and alter that volume as much as you like.

(note that you could substitute the word 'headphones' in this post with 'external speakers', if they are plugged into the headphone jack, I imagine they will have different volume setting to the internal speakers as weill)

Disable Sound Using Colliders Unity

StartupSound.prefPane

This software enables you to control the volume of the startup sound of your Macintosh computer from Mac OS X.

Jeff Atwoodta.speot.ista.speot.is

1. Open Terminal
2. Copy and paste the following line of code in Terminal

3. Restart and rejoice in the sweet sound of nothing.

If you get lonely and want to re-enable the startup sound repeat steps 1 thru 3 but use this command instead..

Works like a charm on my '12 Macbook Pro w/ OSX Mavericks. Worked when I had Mountain Lion as well.

This can also be accomplished using a script to mute the computer on every shutdown (more info here: http://aaron-hoffman.blogspot.com/2014/08/mac-disable-turn-off-startup-sound-boot.html)

1. Check if any hooks already exist (these will be overwritten, so make sure it is OK for you)

   sudo defaults read com.apple.loginwindow LogoutHook

2. Create script file for muting, with the contents below:

   #!/bin/bash

   osascript -e 'set volume with output muted'

3. Make file executable:

   sudo chmod u+x /path/to/mute.sh

4. Add hooks for muting

   sudo defaults write com.apple.loginwindow LogoutHook /path/to/mute.sh

How To Disable Sound

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