I have both. Each is used for different situations, sometimes both together. The 15 has a tweeter and boost button and it can get much deeper/louder. I like it best with my P with flats. I think the 12 has a more balanced sound, not as much thump as the 15. I don't use the contour on either, especially the 12. I prefer my Ibanez acoustic bass with LaBella black nylons through the 12 on the floor. I usually run a Sansamp and tweak according to setup and each room. I like both of 'em! Bring a couple of basses to the store if they have both sizes. And, they each sound better giggin' live than in the store.
-- " Sing unto him a new song; Play skillfully with a loud noise." -- Psalm 33:3
Last edited by heynorm : 01-18-2013 at 08:38 AM.