I think a significant factor is most speakers have ported bass which introduces that column of vibrating air that is not under direct control of the driver. Sealed box designs sound faster to me. Their transient response in the bass is faster.
A transmission line speaker can also offer faster speed than a ported speaker.
Then of course there are the ESL speakers that are certainly fast but won't create any low bass unless they are huge.
Of course there are good and bad examples of all types. However the fact remains that a sealed box bass alignment offers superior transient response to a ported enclosure.
So, check to see if all the speakers you have auditioned are ported designs. Then see if you can find something that is sealed. Magico comes to mind and I am sure there are a few others that might be hard to find.
Btw, I own both types and enjoy both but for different reasons.
A transmission line speaker can also offer faster speed than a ported speaker.
Then of course there are the ESL speakers that are certainly fast but won't create any low bass unless they are huge.
Of course there are good and bad examples of all types. However the fact remains that a sealed box bass alignment offers superior transient response to a ported enclosure.
So, check to see if all the speakers you have auditioned are ported designs. Then see if you can find something that is sealed. Magico comes to mind and I am sure there are a few others that might be hard to find.
Btw, I own both types and enjoy both but for different reasons.