All the reviews are right about the highs/mids - they are awesome. I have the crossover switched in the middle (not - or +) and the treble on my head unit is set pretty flat. You may want to set the switch at -. My VW supposedly used a 6.5 inch driver but when I took the old one out of the car, they were bigger and I lost lows going with this speaker. When i turn up the bass way up on my head unit to compensate, my head unit distorts sooner than it should and I don't get the volume I'm looking for. Maybe an amp is one solution. I have a subwoofer installed as well so I'm okay with the loss of bass. The drivers seem to take a while to break in as well when it comes to the bass. If you don't have an amp or a subwoofer, you might want to look at a lower wattage component set to get the full range easier with head unit power.