What we know about the measurement:

Optimal Audio Cuboid 8 is a passive bookshelves speaker that cost around 490USD each .

  • Quality of the measurement data is low .
  • Origin of the data is Optimal Audio.
  • Format of the data is a GLL file .
  • Sensitivity: 101.5dB (avg. 100Hz-1kHz for 2.83V estimated at 1m) . Sensitivity computed at the measurement distance (10m) over the same frequency range: 81.5dB.
  • -3dB (resp. -6db) point v.s. reference is at 51.5Hz (resp. 45.0Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.5dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-30.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-10.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.92 and would be 5.09 with a perfect subwoofer.
      • Details: NBD: ON 0.635, LW 0.688, SP 0.856, PIR 0.748; SM: SP0.653, PIR0.532; LFQ 0.413, LFX 46Hz
    • Tonality (Preference) Score is 5.71 with an EQ and would be 7.49 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.408, LW 0.418, SP 0.539, PIR 0.444; SM: SP0.938, PIR0.93; LFQ 0.413, LFX 37Hz
  • Vendor specifications:
    • Dispersion: 90° horizontal and 50° vertical.
    • Sensitivity 92 dB
    • Impedance 8 Ohm
    • Size
      • Width 256mm
      • Height 422mm
      • Depth 261 mm)
    • Weight 10.0 kg
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
;