What we know about the measurement:

Phase Tech PC 3.1 is a passive center that cost around 600 USD

  • 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 60.1Hz (resp. 45.4Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.9dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.94 and would be 4.89 with a perfect subwoofer.
      • Details: NBD: ON 0.661, LW 0.636, SP 0.626, PIR 0.606; SM: SP0.562, PIR0.288; LFQ 0.797, LFX 41Hz
    • Tonality (Preference) Score is 5.18 with an EQ and would be 6.68 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.591, LW 0.543, SP 0.503, PIR 0.474; SM: SP0.876, PIR0.814; LFQ 0.771, LFX 32Hz
  • Link to original Review: asr review. .
  • Vendor specifications:
    • Sensitivity 92 dB
    • Impedance 6 Ohm
    • Size
      • Width 209mm
      • Height 559mm
      • Depth 300mm
    • Weight 20kg
Phase Tech PC 3.1
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
PK 32.0 1.16 2.82
PK 62.0 1.44 2.5
PK 121.0 0.97 -2.17
PK 160.0 0.63 -1.58
PK 470.0 2.66 -1.85
PK 1202.0 1.27 3.0
PK 10341.0 0.29 -5.11
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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