What we know about the measurement:

PSB Imagine B50 is a passive bookshelves that cost around 700 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 .
  • -3dB (resp. -6db) point v.s. reference is at 69.6Hz (resp. 50.5Hz).
  • Reference level is normalised to -0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.1dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.51 and would be 6.79 with a perfect subwoofer.
      • Details: NBD: ON 0.524, LW 0.466, SP 0.418, PIR 0.391; SM: SP0.857, PIR0.685; LFQ 0.439, LFX 49Hz
    • Tonality (Preference) Score is 6.14 with an EQ and would be 8.08 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.377, LW 0.316, SP 0.352, PIR 0.266; SM: SP0.932, PIR0.921; LFQ 0.459, LFX 41Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
  • Vendor specifications:
    • Sensitivity 87 dB
    • Impedance 4 Ohm
    • Size
      • Width 171mm
      • Height 300mm
      • Depth 251mm
    • Weight 5.13kg
PSB Imagine B50
AutomaticEQ (IIR)
Set preamp gain to: -4.8dB.
Type Freq Q Gain
PK 41.0 0.95 2.99
PK 69.0 0.31 2.89
PK 289.0 0.27 -3.5
PK 344.0 1.06 2.96
PK 504.0 2.99 2.99
PK 1010.0 2.99 3.0
PK 14633.0 0.85 -2.23
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
PSB Imagine B50
AutomaticEQ LW (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
PK 69.0 1.69 2.81
PK 155.0 2.82 -0.69
PK 487.0 3.0 3.0
PK 1010.0 3.0 3.0
PK 1586.0 0.42 -1.58
PK 4342.0 2.18 1.71
PK 12736.0 2.64 -1.18
Download
This EQ optimise for a flat listening window and is a good start for near field listening like on your desk.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
PSB Imagine B50: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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