(2) IDQ10V3 vs (1) Rainbow Profi 12"

[crea78 10+ year member]

Currently, I am using a Rainbow Profi 12" being powered with 400 watts in a 1cF box. The bass blends in nicely with the frontstage, but I do miss having a 2 sub setup. With the IDQ10V3 being powered at 250w each off a Zapco 500.1, would the (2) 10s be louder [more output so to speak] than running one 12"?

Which route should I go b/c the Profi is a SQ sub and I hear the IDQ is as well, but is it worth the "upgrade" since I recently bought the Profi about 4 months ago. Also, where is a good place to buy the IDQs for around $200 each. I see WoofersEtc has em for $240 a piece.

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