Can Music Reference MR9 drive Tannoy DMT 215 II

Lift the monitors off the floor 8'', the boomy bass disappear but like Jburidan said: still have to do something for the ceiling and walls. The low-frequency window was trying but not much different. Put in new set of tubes and still get the same soft hum so it could be because of the sensitive of the monitors like Clio09 and Djohnson54 mentioned. However, it is too soft the hum I can bear with it. The next step will try the ground like Jburidan adviced. Thank you alls for your helps. :)

Hi Jburidan, it may be a silly question but I need to ask! What is the nominal impedance should I use with? 4 or 8 ohm?
Thanks.

Speaker tap preference is determined by listening to both. Your ears will solve that question.
Regards,

Agree with Charles1dad. My Jotas are wired for 8 ohms, and the system sounds great. But try both, if you can, and trust your ears.

Roger Modjeski sez that even if yr spkrs are wired for 8 ohms you should try the 4 ohm tap on the RM9, that it yields sonic benefits. I did and it does!