Recently replaced the factory speakers with a set of Infinity Reference speakers on our non-Bose 2017 Premier. I went with these because it got decent reviews, plus it has an angled tweeter, which allows you to bring the sound stage higher than knee level. It also went on sale (as a possible price mistake) on Amazon for less than $40 for a pair so I jumped. Other accessories I picked up to make it a truly plug-and-play affair was a set of Scosche speaker brackets and speaker harnesses (I went with the American International SH3802 that I picked up off of eBay).
As posted by other upgraders here, the door panels are held by 2 #7 hex screws, one located in the door pull cup, and another behind the door handle. The best way to release the panel at the door handle location is to insert a thin pry tool or flathead in the upper posterior corner - it just pops off afterwards. Then, using a pronged pry tool, I started with the lower front door clips, moved along the entire lower panel then moved upwards. As noted by @LaBrother previously, the top clips are fastened in an odd way, and I didn't want to break anything so I ended up replacing the speakers while just prying and propping open the door panels with a shim. This had the unfortunate side effect of not allowing me to install Dynamats as I had originally intended.
The speakers are held in place by a single #7 hex screw. Interesting note, the factory speakers (at least the non-Bose we had) are rated as 20W 4-ohm ones, but have a pretty hefty appearing voice coil, compared to the factory ones in our Subaru. Forgot to mention, in lieu of the Dynamat, I used a set of foam rings to help keep the sound isolated into the cabin (and not spilling over into the door panel causing unwanted vibration) - worked as intended.
The sound quality is vastly improved. Certain nuances in some of the songs I listen to were brought forward, and my commute is a much more pleasurable experience now. The factory in-dash tweeters seem to be OK for the higher frequencies for now, and the built-in tweeters on the coax speakers help them out a great deal. It doesn't seem like I need an amp for now, but certainly a DSP is in the cards (the Bolt's built-in EQ leaves a lot to be desired). Also might think about a small sub, which I plan on placing somewhere in the cabin, but that might be months to a year away from fruition. For now I'm really happy with the simple, 2-hour DIY upgrade.
As posted by other upgraders here, the door panels are held by 2 #7 hex screws, one located in the door pull cup, and another behind the door handle. The best way to release the panel at the door handle location is to insert a thin pry tool or flathead in the upper posterior corner - it just pops off afterwards. Then, using a pronged pry tool, I started with the lower front door clips, moved along the entire lower panel then moved upwards. As noted by @LaBrother previously, the top clips are fastened in an odd way, and I didn't want to break anything so I ended up replacing the speakers while just prying and propping open the door panels with a shim. This had the unfortunate side effect of not allowing me to install Dynamats as I had originally intended.
The speakers are held in place by a single #7 hex screw. Interesting note, the factory speakers (at least the non-Bose we had) are rated as 20W 4-ohm ones, but have a pretty hefty appearing voice coil, compared to the factory ones in our Subaru. Forgot to mention, in lieu of the Dynamat, I used a set of foam rings to help keep the sound isolated into the cabin (and not spilling over into the door panel causing unwanted vibration) - worked as intended.
The sound quality is vastly improved. Certain nuances in some of the songs I listen to were brought forward, and my commute is a much more pleasurable experience now. The factory in-dash tweeters seem to be OK for the higher frequencies for now, and the built-in tweeters on the coax speakers help them out a great deal. It doesn't seem like I need an amp for now, but certainly a DSP is in the cards (the Bolt's built-in EQ leaves a lot to be desired). Also might think about a small sub, which I plan on placing somewhere in the cabin, but that might be months to a year away from fruition. For now I'm really happy with the simple, 2-hour DIY upgrade.