Hi fredk,

Glad you like the sound of the M80s on acoustic guitar. I play 12-string and 6-string acoustic and it's certainly one of my midrange tests along with 5-string banjo (my folkie roots).

Anyway, re the boomy bass, try moving the M80s farther out from any walls or corners (adjacent surfaces) to lessen the bass output. Concrete cubes are the worst sort of rooms for bass boom, but some repositioning of the 80s (and/or your listening seat) should help.

Regards,

Alan

Alan Lofft,
Axiom Resident Expert (Retired)