82 is loud enough playing something that requires some volume like Deep Purple's "Machine Head". But generally I have around the 70's for LP's I think. Could it be that my speakers need the extra db? That's why I got the three-channel amp because of the draw of these Kef's.
I don't know about the Q11, but the Q11 Meta should be considered truly 4 ohm nominal speakers. Sensitivity, at 89 dB/2.83 V/m isn't that bad so if your seating distance is say, not more than 4 meters and you listen to 5-10 dB below reference at the most, then your Emotiva Bass X may be fine. If I were to drive those speakers, I would go with something much more current capable, such as the relatively low cost Hypex NC502MP:
Hypex NC502MP OEM amplifier module with on-board SMPS
Again, the bass X may be good enough if you listen anywhere close to reference level and sit not too far.
I don't know why you have to crank the volume that high though, as the bass X has good gain, 29 dB.
Most Hypex amp's again with the default input buffer would be around 25.5 dB so with those your volume would have to be about 3-4 dB higher.