Dayton Audio OPAL1 is a passive bookshelves that cost around 800 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity:
    • Company: 78.5 dB
    • Measured: 75.7 dB (avg. 300Hz-3kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 52.7Hz (resp. 38.8Hz).
  • Reference level is normalised to -0.5dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.2dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.03 and would be 6.53 with a perfect subwoofer.
      • Details: NBD: ON 0.529, LW 0.456, SP 0.4, PIR 0.402; SM: SP0.812, PIR0.59; LFQ 0.504, LFX 32Hz
    • Tonality (Preference) Score is 6.84 with an EQ and would be 8.16 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.372, LW 0.301, SP 0.321, PIR 0.271; SM: SP0.947, PIR0.956; LFQ 0.504, LFX 29Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
Dayton Audio OPAL1

Vendor specifications

  • Impedance 4.3 Ohm
  • SPL
    • peak: 102 dB
  • Size
    • Width 178mm
    • Height 356mm
    • Depth 241mm
  • Weight 9.4kg

Directivity (-6dB)

AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
PK 38.0 0.56 3.0
PK 95.0 1.27 -2.87
PK 689.0 0.25 3.0
PK 714.0 2.94 -3.09
PK 820.0 0.76 1.71
PK 1244.0 1.03 -6.3
PK 7308.0 0.5 -1.53
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Quick config:
Quick config:
Quick config:
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