These speakers come with MANY different mounting options for the tweeter (surface, flush, coaxial-style) as well as the woofer. Careful with how hard you torque the screw, as they are painted and it is easy to turn too hard and chip paint. Construction is otherwise very solid. The crossovers are large, so make sure you have room for them (look up the measurements before you buy). They can be bi-amped for those so inclined by simply taking off the jumpers that join the input channels. As to the sound, they have a much smoother, less fatiguing sound to them than the components and lower end alpine coaxes they replaced. They have more midrange detail and give nice staging in my stock locations. I used two pairs (audiophiles hush, I like it that way) in the front component locations (woof and tweet separate) and the rear quarter locations (in coax mount) respectively. They are run from an Alpine IDA-X100 to the imprint processor to an Alpine PDX 4.100 individually rated at 123 watts per channel. They are hungry speakers, but if fed well, they can really sing. Very linear per the imprint process before they are even eq'd (if you pull back on the tweets a hair with the jumper block - there are 4 levels to choose from). Midbass had slightly less volume overall (but also may be due to being more precise and less muddy) vs. the components, but if you aren't giving them enough juice, they will sound anemic.