Our bad
A common criticism of Bass Control with multiple subwoofers is the lack of bass after a calibration.
Users find much more satisfying bass with DLBC OFF (standard Dirac Live) than when using Bass Control... why so?
This is a misunderstanding caused by us not explaining well how Bass Control works.
By using the same target for each sub their outputs will sum up in standard Dirac Live as each sub is measured and corrected individually while DLBC will take the summation into account and decrease their outputs accordingly.
We also expect to release (hopefully tomorrow) a new Dirac Live update where the target curve will be loaded to both the symmetric channels and the bass group, we will add an additional option to load the same desired target curve to all channels at once (including the bass channel)
That is an important update for users of Bass Control with one subwoofer as well.
Thanks for taking the above into account and for sharing your findings after having used the upcoming update,
Flavio
P.S. Arcam is also expected to release an update which will increase the headroom assigned to the DSP in order to avoid the distortion that some find with some tracks