How can multiple woofers generate lower frequency?

Take the Soliloquy speakers as an example,

Model Woofer Number Low Frequency
6.2 one 6.5” woofer 28Hz
6.3 two 6.5” woofers 25Hz
6.5 three 6.5” woofers 22Hz

They all use the same woofers, how can it be explained?

Thanks for your inputs.

Otto

The exact cabinet sizes are unknown but the speakers are 42”, 44” and 53” respectively with the same base sizes (9” X 13”).

So again how can it be explained? Also what is the advantage to use this design over the single-large-size-woofer design?

Thanks for your inputs.

Otto

Bomarc,

So multiple drivers design is better than single driver design? Please advise.

Thank you for all your inputs. It is very educational to me.

Happy Listening.

Otto