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Open the Sound pane and the Output tab, then select Internal Speakers as in this image:.Open System Preferences from the Apple () menu, the Dock, or from the Applications folder on your hard drive.Remove any external audio devices and cables from the USB, FireWire, or 3.5 mm audio ports.Troubleshooting issues with no audio from built-in speakers on Macs Try disconnecting your audio interface and change the sound settings for your Mac back to the defaults: Safari for Mac: Mute audio in Safari tabs Were you watching YouTube in the Safari Browser or in the dedicated YouTube app? If in Safari, check to make sure you don't have the audio muted in one or more tabs. I understand your internal speakers are not working on your 2015 MacBook Pro after watching a YouTube video and putting your Mac to sleep. We are currently talking with Intel about integrating Thunderbolt technology into our hardware and once it is available, Thunderbolt will be included in all new products as well as an upgrade for all existing interfaces.Īll product names and trademarks are property of their respective owners.Thanks for your question. The introduction of Thunderbolt opens up some interesting possibilities. That being said, we do not presently have a publicly available development timeline for the next generation of Metric Halo products. While it is assumed that using multiple Thunderbolt adapters on the Retina MacBook Pro is possible, we have not tested this configuration and can not certify its performance at this time. This configuration will support up to six interfaces, or provide one bus for interfaces and another for hard drives.

The Thunderbolt Display and either the Thunderbolt to Firewire adapter or Sonnet Echo/FW800 card can be used simultaneously to create two separate FireWire busses. The performance is the same as a native FireWire port: We have these configurations in-house and have qualified them for compatibility.

The third is to take advantage of Sonnet Technology's Thunderbolt to Expresscard adapter: The second option is Apple's Thunderbolt to Firewire adapter: There are currently three ways to use Metric Halo interfaces with Thunderbolt- the first is to connect your Thunderbolt-enabled computer to the 27" Apple Thunderbolt Display: