So.... I actually do product reviews for audio products. I jumped on the Bolt due to price, and availability. I wasn't keep on paying for the Bose system as I knew I would like to put in something much better. In general.... I'm not a fan of Bose. Look at the specs of their products, and they don't publish frequency response. And when I bought the car, I opted for the extended warranty for 8 years and 100k miles. So it covers everything including the stereo system. So now I have a delema. Replace a stereo system that has such a huge lengthy warranty, or stay with the Bose. ???
Unlike some previous posts.... I sometimes listen to it loud. But not THAT loud. Lol. I have a system worth close to $10k on my other vehicle that's a fully active system. Speakers hand made in Germany. I pulled out the stuff in the back tomsee the sub, and did some searching online. It looks to be a small 5.25 or 6.5 inch woofer. Looking at the plastic enclosure there is a port at the end. And looking at the size of the enclosure.....in Bose fashion....it appears to be a labyrinth. The port must go back and forth to produce a very lengthy port.
I did a bunch of listening and also took some measurements from my handheld SPL meter. I listened to test tones from 55hz down to 25hz. And it seems to put out down to 30, maybe 29hz at -3db. That's not bad.
While this Bose system isn't as good as my other system. It actually is pretty good for a system provided by the manufacturer. It doesn't have the imaging or the resolution of my other system. But it's good enough I may not change it for now. Maybe add a better sub. While the sub does do pretty good, I would like more. Lol