What we know about the measurement:

Hsu Research MFL-6 is a passive bookshelves that cost around 280 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • -3dB (resp. -6db) point v.s. reference is at 77.6Hz (resp. 51.3Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 6.0dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.55 and would be 5.69 with a perfect subwoofer.
      • Details: NBD: ON 0.713, LW 0.627, SP 0.522, PIR 0.509; SM: SP0.86, PIR0.564; LFQ 0.831, LFX 45Hz
    • Tonality (Preference) Score is 5.94 with an EQ and would be 7.74 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.463, LW 0.385, SP 0.365, PIR 0.315; SM: SP0.963, PIR0.932; LFQ 0.831, LFX 38Hz
  • Link to original Review: asr review. .
  • Vendor specifications:
    • Impedance 8 Ohm
    • Size
      • Width 203mm
      • Height 390mm
      • Depth 146mm
    • Weight 5.9kg
Hsu Research MFL-6
AutomaticEQ (IIR)
Set preamp gain to: -3.1dB.
Type Freq Q Gain
PK 80.0 0.42 4.83
PK 144.0 0.8 -5.35
PK 382.0 2.86 1.01
PK 487.0 2.11 -2.05
PK 3405.0 1.32 4.93
PK 4654.0 1.33 -7.48
PK 9648.0 1.39 -2.86
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
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)
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