The first one I am pretty sure, it has been several months. The most recent was a manufcturer defect for sure, they told me they were working on it. They are not a huge company so they have them built to their spec. The sound is worth the hassles to me, with such a small vehicle these things just kick butt, the design is there outstanding feature, it is unfortunate they have had some manufacturing issue's but the way they have handled them has been fantastic. I talk to the same guy every time I call, he knows what I have in my car. I like dealing with the little guys personally. I have been sadly disappointed by most speakers I have bought in the past 10 years. I used to be a huge MB Quart fan but alas they have gone way down in quality.
I am running these with an active crossover set at 3000, and a 30 band parametric eq. but even before I eq'd them with the RTA they sounded great, not sure what they sound like if you use the included crossover but the reviews on DIY mobile are good. I got them by accident, I ordered a set of Cadence and they sold out and the replacement model was much more expensive and a 3 way system so they reccomended these instead at a discount.