What we know about the measurement:

Pioneer SP-EC73 is a passive center that cost around 400 USD

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 84.7dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 67.4Hz (resp. 61.5Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.3dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-50.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.42 and would be 5.13 with a perfect subwoofer.
      • Details: NBD: ON 0.846, LW 0.556, SP 0.416, PIR 0.469; SM: SP0.825, PIR0.414; LFQ 0.874, LFX 61Hz
    • Tonality (Preference) Score is 5.02 with an EQ and would be 7.63 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.628, LW 0.328, SP 0.298, PIR 0.222; SM: SP0.96, PIR0.939; LFQ 0.874, LFX 58Hz
  • Link to Original review.
Pioneer SP-EC73
AutomaticEQ (IIR)
Set preamp gain to: -2.7dB.
Type Freq Q Gain
3 67.0 1.2 1.4
3 194.0 0.94 2.95
3 262.0 2.91 -1.91
3 739.0 1.61 -1.34
3 1103.0 2.38 1.87
3 2380.0 2.36 -0.48
3 4345.0 2.06 2.48
3 8478.0 2.3 2.91
3 11454.0 1.21 -2.5
Download

These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Pioneer SP-EC73 filters_auto_eq

AutomaticEQ

Pioneer SP-EC73 filters_eq_full

Target v.s. EQ

Pioneer SP-EC73
flipflop@ASR (IIR)
Set preamp gain to: -1.0dB.
Type Freq Q Gain
3 342.0 10.0 0.9
3 410.0 7.5 1.1
3 487.0 14.0 -1.0
3 687.0 2.02 -1.5
3 935.0 15.0 -0.5
3 1100.0 9.0 1.1
3 1550.0 12.0 -0.7
3 1970.0 17.0 0.7
3 2249.0 1.533 -1.5
3 2365.0 15.0 -0.7
3 2730.0 25.0 0.6
3 4612.0 4.957 1.7
3 6220.0 9.0 -0.7
3 7520.0 8.0 0.6
3 8859.0 5.0 1.9
3 9800.0 12.0 0.7
3 10600.0 10.0 -0.8
3 12255.0 1.0 -4.7
3 15290.0 5.2 -1.1
3 17100.0 5.0 1.7
Download

These EQ is designed by ASR member flipflop.

Pioneer SP-EC73
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.5
3 100.0 2.14 0.25
3 160.0 2.14 0.5
3 250.0 2.14 0.0
3 400.0 2.14 0.25
3 630.0 2.14 -0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 -0.25
3 2500.0 2.14 -0.25
3 4000.0 2.14 0.25
3 6300.0 2.14 0.0
3 10000.0 2.14 -0.25
3 16000.0 2.14 -0.5
Download

These EQ is designed for a 15 bands graphical EQ.

Pioneer SP-EC73
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.5
3 63.0 4.32 0.5
3 80.0 4.32 0.25
3 100.0 4.32 0.25
3 125.0 4.32 0.25
3 160.0 4.32 0.5
3 200.0 4.32 0.25
3 250.0 4.32 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.0
3 500.0 4.32 -0.25
3 630.0 4.32 -0.25
3 800.0 4.32 -0.25
3 1000.0 4.32 0.0
3 1250.0 4.32 0.0
3 1600.0 4.32 -0.25
3 2000.0 4.32 -0.25
3 2500.0 4.32 -0.25
3 3150.0 4.32 0.0
3 4000.0 4.32 0.25
3 5000.0 4.32 0.25
3 6300.0 4.32 0.0
3 8000.0 4.32 0.25
3 10000.0 4.32 -0.25
3 12000.0 4.32 -0.75
3 16000.0 4.32 -0.25
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Pioneer SP-EC73: comparison between EQs
Pioneer SP-EC73

Comparison betweens various EQs

Pioneer SP-EC73

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
;