The 7.0 also uses Scanspeak drivers. The marble 7.0 uses the 9700 tweeter which is electrically the same as the more expensive 9900 used in the 9.0. The marble 7.0 and 9.0 now sound very much similar except that the 9.0 produces deeper and is faster. The 7.0 is more sensitive and plays louder. The sound of the marble 7.0 is far more refined than the original wood version.
Upgrades are available .
One of the attributes of the nOrh Loudspeaker is its ability to play loud. Most loudspeakers are limited in how much volume they can produce because they have to continuously fight with the energy inside the box. They do not encounter any back pressure. We are not sure how much louder we could go as even with ear protection, we could no longer bear the test. These measurements were taken three meters away from the loudspeaker.