I agree. I have four flutes in my car on 100w each. They handle it well but I’d like a little more bass. I’ve been shopping for 8’s that I could possibly fit. I’m gonna print one adapter out tonight and see how it will fit.Guess my doors are sealed enough that they don't exactly act like ib anymore asine haven't bottomed out yet. my silverflutes are on 90w normally crossed at 50hz 24db slope but I have run them with no high pass at all on some rock style music to fill in the bottom end a little.
At one point they were on 125w crossed the same.
Honestly this little $35 speaker is damn good for the money. It struggles beyond 2500hz though. Which mine are crossed at 2khz lowpass anyway.