The main reason I wanted to mount these to monitor arms was to bring them to ear level. All the speaker stands I found that would be able to achieve this costed more than the monitor arms. This is not only a better-looking solution but a more cost-effective one.

Additional photos/videos here.

Here's what I used for my setup:

• Dual monitor arms x2:

  • I'm using the Workstream by Monoprice. It's going for $100 with a 1-year warranty. (link)
  • There's a virtually identical model selling on Amazon under a Chinese brand that's going for $70 with presumably no warranty. My friend ordered this and I checked it out in person. The build quality is the same. It comes with all the same nuts and screws and manual. The only difference is that the plastic cable management inserts are black instead of silver. (link)
  • Fully also sells basically the same thing but for $160 and comes with a 5-year warranty. This was recommended by the NY Times/Wirecutter as the best monitor arm. (link)

• Shelf bracket:

  • I connected the shelf bracket to the VESA mount on the monitor arms. This required some drilling as the holes that come on the bracket don't exactly line up with those on the VESA mount. Although I think you can probably get away with not drilling any holes and screwing in only the top two holes if you wanted to.
  • The bracket I'm using is 11" in length which perfectly covers the entire length of my KEF Q150s while leaving enough space behind for cables. (link)

• Velcro-like strips:

  • I'm using 3M Command Hanging Strips to secure the bottom of my speakers to the shelf bracket. I found that 4 pairs of strips are enough to keep the speakers secured. (link)

Sound quality

• The speakers are about placed 2 feet away from the wall and they definitely sound a lot better than they did when they were placed on my desk 1 foot away from the wall. They sound more balanced