Dali Rubicore 6
Starting at the top of the Rubikore 6 cabinet you have the high frequency section of the loudspeaker, this consists of not one but two drivers in the form of a 29mm soft dome and a 45mm planar magnetic, the latter covering the highest frequencies and the larger than average tweeter doing the (relatively) heavy lifting of highs that you might just be able to hear. DALI makes a big point about the dome being free of ferrofluid, an oil that is used largely to keep voice coils cool. Its claim is that this fluid impedes movement in the driver and slows down its transient response but say that without it the voice coil has to be more precisely centred in the magnetic gap than is conventionally the case.
DALI calls the paper and wood fibre cones on its mid and bass drivers ‘Clarity Cones.’ These have a light coating to provide the desired degree of damping. They are embossed to pool the coating, which increases damping without adding too much weight. This aims to make the midrange smoother. The SMC (or Soft Magnetic Compound) magnet system on these drivers uses insulated iron granules rather than solid iron, this is because the latter conducts electricity and current in the voice coil creates eddy currents in the iron that restricts movement due to a braking effect. DALI’s SMC also gives the Rubikore a more linear impedance and thus makes the amplifier’s life easier, they suggest that the Rubikore 8’s 90.5dB/4 Ohm load can be driven with a 30W amp. SMC has also been used in the crossover inductors where it is said to measurably reduce distortion by a significant amount, DALI also uses fancy Mundorf capacitors in the network.
Reviews
Specifications
- High Frequency Driver(s) 17 x 45 mm planar, 1 x 29 mm soft dome
- Low/Mid Frequency Driver(s) 2 x 6½ inch
- Frequency Range [+/- 3 dB] [Hz] 38 - 34,000
- Recommended Amp. Power [watts] 40 - 200
- Maximum SPL [@ 1m] [dB] 110
- Sensitivity [2.83V/1m] [dB] 88.5
- Crossover Frequencies [Hz] 800 / 2,600 / 14,000
- Crossover Principle 2½ + ½-way
- Nominal Impedance [ohms] 4
- Recommended distance from rear wall 20 - 180 cm
- Dimensions (H x W x D) 990 x 200 x 380 mm 39.1 x 7.9 x 15.0 inches
- Weight incl. grille 23 kg / 50.7 lb
