Small or large sub for music

"More important, IMO, is to have a SEALED sub for music."

Can anyone provide a supportable reason for this, or is this just an ad nauseum repeating of inaccurate information?  

It's a myth, with a completely different issue coming on. Sealed have higher f3, and fewer problems with the room. If you know what you are doing you can make a ported sub work fantastically. If you don't, get a sealed 10" sub and leave it alone. :) 

Subwoofers are a bad solution for inadequate speakers. They are mutually exclusive with high fidelity because they can never perfectly integrate. Some people and rappers don’t care about sound quality. Low-Fi is fine for them. For the rest of us, subwoofers only belong in the home theatre. 

They are mutually exclusive with high fidelity because they can never perfectly integrate.

<< cough >> bs << cough >>

Just because you have never known how doesn’t mean it is not possible. However, it takes high degrees of skill and experience. It is quite closely related to speaker crossover design. This is why I often believe that avoiding the sub is a better option for many. That’s not the same thing as saying it cannot be done. It is glorious when done right, but few live to hear it.

Best,

E