Optimal Audio Cuboid 10 is a passive bookshelves that cost around 660 USD each.

  • Quality of the measurement data is low.
  • Origin of the data is Optimal Audio.
  • Format of the data is a GLL file .
  • Sensitivity:
    • Company: 96 dB
    • Measured: 94.4 dB (avg. 300Hz-3kHz for 2.83V estimated at 1m).
    • Measured: 74.4 dB computed at the measurement distance (10.0m) over the same frequency range.
  • -3dB (resp. -6db) point v.s. reference is at 47.5Hz (resp. 42.5Hz).
  • Reference level is normalised to -0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.8dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.38 and would be 4.45 with a perfect subwoofer.
      • Details: NBD: ON 0.614, LW 0.602, SP 0.71, PIR 0.646; SM: SP0.064, PIR0.1; LFQ 0.772, LFX 43Hz
    • Tonality (Preference) Score is 4.41 with an EQ and would be 6.25 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.44, LW 0.41, SP 0.49, PIR 0.428; SM: SP0.233, PIR0.41; LFQ 0.772, LFX 38Hz
Optimal Audio Cuboid 10

Vendor specifications

  • Dispersion: 90° horizontal and 50° vertical.
  • Impedance 8 Ohm
  • SPL
    • max: 120 dB
    • peak: 126 dB
  • Size
    • Width 322mm
    • Height 524mm
    • Depth 326mm
  • Weight 16.0kg

Directivity (-6dB)

AutomaticEQ (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
PK 42.0 1.91 2.98
PK 74.0 1.85 -5.03
PK 160.0 0.82 -1.88
PK 3068.0 3.0 3.0
PK 5165.0 2.96 -4.0
PK 8397.0 1.21 -4.06
PK 13652.0 2.98 -3.83
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This EQ optimise the Harman score and is a good start for far field listening like in your living room.

AutomaticEQ LW (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
PK 47.0 2.99 2.99
PK 74.0 1.51 -4.93
PK 178.0 1.02 -1.81
PK 976.0 3.0 2.06
PK 1760.0 2.59 -2.05
PK 3068.0 2.86 3.0
PK 7308.0 0.89 -2.21
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This EQ optimise for a flat listening window and is a good start for near field listening like on your desk.

Quick config:
Quick config:
Quick config:
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