The key to your situation is your amplifier- the Marantz PM11S1 dual mono design is a superbly robust, smooth muscular amplifier that will bring the Harbeths alive in your room. I would recommend the C7ES3 vs. the 30.1 because they do have a bigger sound.
Locate them away from the back wall at least 2 feet- if you can go to 4 feet that would be ideal and they will really slam the bass.
I have owned the C7s for a couple years now and they define the idea of detail yet no fatigue. They have a natural sound that manages to eliminate the edginess that many speakers have. Nearly all of my recordings sound great and if you venture into the Klipsch / Zu realm you will find that not to be true.
Again, with your amp and proper placement of the speakers on quality filled stands then you will be extremely happy with the sound of Harbeths.
Locate them away from the back wall at least 2 feet- if you can go to 4 feet that would be ideal and they will really slam the bass.
I have owned the C7s for a couple years now and they define the idea of detail yet no fatigue. They have a natural sound that manages to eliminate the edginess that many speakers have. Nearly all of my recordings sound great and if you venture into the Klipsch / Zu realm you will find that not to be true.
Again, with your amp and proper placement of the speakers on quality filled stands then you will be extremely happy with the sound of Harbeths.