Question about the passive SUB

[JensWest]

Hi all!

I've been trying to find the answer, but I haven't been able to...
How does the electronics on a passive SUB work?
Is it vol./vol./tone or vol./tone/tone?

Thank you!

 

[five7]

vol./treble/bass just like an active one.

 

[JensWest]

Ok!
That's a solution you don't see every day.
Thank you!