Feel free to contribute to my work by tipping and providing coffee for those late nights! This is an adaptation of multiple things. I printed the original gramazon that was for the Amazon echo dot 2nd generation. While I found that it was nice and certainly increased the volume of the echo and made it sound like an actual gramaphone I found it was still too soft. So then I printed the echo 3rd generation piece to fit the gramazon. I found that when that was done the much improved sound of the echo 3rd generation was very muffled and didn't sound good at all. So what I did, is to add an adapter so that way I could put the Google Home Mini into the notch that was designed for the echo dot 3rd generation. This addition is really for aesthetics only as the sound doesn't come from the horn anymore because the google speakers are upward firing.
So attached I have several files. Google Gramazon Whole 15mm is the whole bottom notch printed in one part with a higher stand to put the google home on Google Gramazon Whole 10mm is the whole bottom notch printed in one part with a slightly lower stand to put the google home on. Google Gramazon Lid is the lit that sits on top to seal the notch with the google home mini inside. The two adapter files are simply 10mm and 15mm round stands to glue on top of your existing notch if you have already printed the notch for the gramazon-echo dot 3rd gen. If you already printed the notch these adapter files are easier as they are pretty quick and don't take up much filament. You can print both and decide which height you like better.
If you print the entire notch I would suggest printing supports everywhere so that way it will support the charger port opening which you will need. Make sure they are thin supports though because this is a long charger channel so it is fairly difficult to remove once printed.
If you already have the horn printed you don't need to reprint it. If you already have the 3rd gen dot notch and lid printed then you only need to print the adapters.
All other joint, neck and ring files were provided by https://www.thingiverse.com/thing:2845710