I just installed 6.5 inch Rockford Fosgate coaxial speakers on my ’14 Audi Q5 using your technique. It worked flawlessly! Just had to make some minor modifications. I used thin plywood, approx. 4mm thick. The outer dimensions were spot on, but I increased the inner dimensions by .5 inch to accommodate my speakers. Instead of using epoxy to attach the ring, I screwed it in with small, narrow screws in case I wanted to change speakers later on. This way, I can just unscrew it. Other modifications - I affixed thin weather stripping (foam) on the speaker housing where it screws into the door panel to prevent vibrations. Also used wire connectors for ease of removal in the event I want to replace. Already replaced the front tweeters with Memphis Audio 2.75-inch tweeters with bass blockers. Will replace the front center channel with 3-inch Dayton audio and the rear door speakers with Rockford Fosgate in the next few weeks. Thank you very much for sharing this video!! Deserves 1,000 👍 Take care.

Exactly what I was looking for, thank you so much!

OL on the display means OpenLoop, which means there is no conductivity. It says OL before you measure anything as the air between the 2 probes is an insulator. That means there is resistance when you measure, and a lot of it. You said there isn't resistance, which is wrong. You should indeed get a measurement. If the speaker is shorted the number would be very low and if there is a broken wire etc, then the reading would be very high, or OL

Well done sir

Hey Thomas - Thank you for sharing and providing the adapter ring measurements! I will try this on my '14 Audi Q5 which has the same speaker set-up. I don't have a 3d printer so will use a cardboard template first then use that to cut out a thin piece of wood. Did you also replace the rear passenger door speakers? If so, did you have to to the same process?

What was the mounting depth of the OEM's? Buying some aftermarket adapters and will be using 8" woofers instead of 6.5".

Hello, have a good day. I need to ask a question regarding the change of the speakers of a 2009 audi a5. The problem is that when the speakers (4) and the tweeters (4) were changed, the sound stopped being heard. I don't know what to do. Can you give me any idea what happened?

Here's how the clips work for the door panels if they are giving you trouble - kzfaq.info/get/bejne/jd9-pJmKnsfOqKc.html

Nice work man! Going to try and do it myself. Can you give me de measurements of that disc plate you printed? So I can get 4 printed. Thanks 😁

worst idea. the "plate" you created is way to thin. thicker is way better. next issue, you could have also made a brand new mounting bracket with a 3D printer. its actually best to create a solid single form. this also doesn't look good with all the glue your adding. try checking out CAF or five star car stereo youtube videos for professional guides. for others, don't do this. waste of time and effort.