Hi - I'd like to install the Anthem SL Classical in my classical 7 string guitar. 2 questions:

What is the active length of the undersaddle element? my string spacing in total width at the saddle is 71mm/2.8inches.

A reviewer (Kai at GSI) said that the undersaddle deals with most of the low frequencies, and the mic adds air and handles some of the upper frequencies. Can the undersaddle deal with the pitches of the low 7 string, which can be tuned as low as low A, an octave below the 5th string open A?

Thanks so much!