Posts Tagged ‘Audio’

How to Connect Your (Older) Mac to an HD TV with Audio — Mini-DVI to HDMI

// July 25th, 2013 // 3 Comments » // Blog

I know this isn't my usual blog post offering. I just wanted to log this solution here as it took me so long to find the answer myself.

The problem: how to connect an older Mac to an HD TV (in my case, a 2007 MacBook to an LG) so you get both the video and the audio out via the display?

What you will need:

  • Mini DVI to HDMI Male/Female Cable Adapter
  • HDMI to HDMI cable, Male/Male
  • 3.5mm Jack to 3.5mm Jack cable, Male/Male

Step 1: Connect the Video

  1. Plug the male end of the Mini-DVI to HDMI adapter into the Mac's mini-DVI port (remember, this only works for older Macs that have such a port; newer Macs have something different, so check the tech specs before tryng this at home).
  2. Connect the female end of the adapter to one end of the HDMI to HDMI cable.
  3. Now connect the other end of the HDMI cable into one of the HDMI ports of your HD TV.
  4. Switch on your MacBook and change the channel input on your TV to HDMI. The displays should automatically sync.
  5. You may need to alter the Mac Display options and/or the TV picture settings. For example, I use the 'Just Scan' screen ratio on my LG.

Step 2: Connect the Audio

The reason we need a 'Step 2' is that the Mini-DVI ports on older Macs don't transmit an audio signal; it's just video. Therefore you need to use a second cable to carry the audio out to the TV.

  1. Plug one end of the 3.5mm Jack cable into the headphones socket of your Mac.
  2. Plug the other end into the RGB/DVI audio in port of your TV.
  3. Try playing a video with sound on your Mac, making sure its volume is up and the TV isn't muted.

Side note: I did originally try connecting the audio using a 3.5mm Jack to RCA cable instead, but it didn't work because my LG TV doesn't use the RCA audio input when the video input is HDMI. It seems that other TVs do – why the difference, I don't know. I suspect it is a profit-making scheme run by the evil cable manufacturing industry.

If you have any questions… don't ask me, I barely understand this myself. All the best!

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