Actually the D6 series has really good midbass... you might be thinking of the M6 speakers from last year, which did lack midbass. What kind of car are they going in, as the D661 drivers are pretty deep (just a heads up). I've heard the D661a'd side by side against Morel Elates (retail for over twice as much) and I can honestly say that I liked the D6's better. Don't get me wrong though, the morels are great speakers. The D6's play very loud and clean provided you have a nice amp for em. You wouldn't regret the purchase. Where are you getting them from?