OK you confused me with this talk of a dip at the crossover frequency as I thought this thread was about the compression driver not the midbass.
3 things:
Yes a sealed box rolls off sooner than a ported box but the bass/subbass crossover often ends up acoustically overlapped with the bass boost now common in modern music and with the way most people end up configuring a system with subs louder
The type of crossover used will also affect response through the crossover region, an even order LR will sum flat while a Butterworth produces a hump, designers sometimes use that to produce the desired response.
Modeling programs are based on mathematical formula and represent an ideal. The problem is drivers do not behave ideally and when they are combined with crossover and EQ filters the actual results you get will vary sometimes significantly from the simulation. If your speaker measures with roughly the same response shape as your simulation that is considered a success.
3 things:
Yes a sealed box rolls off sooner than a ported box but the bass/subbass crossover often ends up acoustically overlapped with the bass boost now common in modern music and with the way most people end up configuring a system with subs louder
The type of crossover used will also affect response through the crossover region, an even order LR will sum flat while a Butterworth produces a hump, designers sometimes use that to produce the desired response.
Modeling programs are based on mathematical formula and represent an ideal. The problem is drivers do not behave ideally and when they are combined with crossover and EQ filters the actual results you get will vary sometimes significantly from the simulation. If your speaker measures with roughly the same response shape as your simulation that is considered a success.
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