What we know about the measurement:

Revel C52 is a passive center that cost around 2500 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: 89.3dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 76.9Hz (resp. 62.3Hz).
  • Reference level is normalised to 0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.0dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-80.0°, 70.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.62 and would be 7.47 with a perfect subwoofer.
      • Details: NBD: ON 0.454, LW 0.332, SP 0.383, PIR 0.337; SM: SP0.905, PIR0.832; LFQ 1.397, LFX 66Hz
    • Tonality (Preference) Score is 5.79 with an EQ and would be 8.26 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.343, LW 0.305, SP 0.32, PIR 0.257; SM: SP0.968, PIR0.949; LFQ 1.397, LFX 54Hz
  • Vertical measurement
  • Link to Original review.
Revel C52
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
LS 93.0 0.99 2.96
PK 253.0 0.66 -2.06
PK 299.0 1.5 1.8
PK 529.0 1.58 0.43
PK 998.0 1.87 2.26
PK 1442.0 1.52 -2.09
PK 1948.0 2.88 2.47
PK 4966.0 0.52 -1.0
PK 15474.0 0.81 2.72
Download

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

Revel C52 filters_auto_eq

AutomaticEQ

Revel C52 filters_eq_full

Target v.s. EQ

Revel C52
flipflop@ASR (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
PK 379.0 10.0 -0.5
PK 522.0 9.0 0.5
PK 685.0 2.15 -1.4
PK 793.0 1.022 1.6
PK 927.0 9.0 -0.4
PK 1085.0 7.5 0.5
PK 1265.0 4.1 -1.9
PK 1552.0 5.1 -0.9
PK 1970.0 5.0 0.8
PK 2790.0 7.0 -0.5
PK 3605.0 1.1 -1.6
PK 3920.0 4.8 0.8
PK 5115.0 7.0 -0.8
PK 6930.0 4.4 -1.8
PK 8000.0 11.0 1.1
PK 8900.0 5.0 -1.6
PK 9800.0 14.0 0.7
PK 10900.0 7.0 -0.9
PK 12200.0 9.0 0.5
HS 15000.0 1.5772935127949521 2.9
Download

These EQ is designed by ASR member flipflop.

Revel C52
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 0.5
PK 100.0 2.14 0.0
PK 160.0 2.14 0.0
PK 250.0 2.14 0.0
PK 400.0 2.14 0.0
PK 630.0 2.14 0.0
PK 1000.0 2.14 0.25
PK 1600.0 2.14 0.0
PK 2500.0 2.14 0.0
PK 4000.0 2.14 0.0
PK 6300.0 2.14 0.0
PK 10000.0 2.14 0.0
PK 16000.0 2.14 0.75
Download

These EQ is designed for a 15 bands graphical EQ.

Revel C52
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.5
PK 40.0 4.32 0.5
PK 50.0 4.32 0.5
PK 63.0 4.32 0.5
PK 80.0 4.32 0.25
PK 100.0 4.32 0.0
PK 125.0 4.32 0.0
PK 160.0 4.32 -0.25
PK 200.0 4.32 -0.25
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 0.0
PK 500.0 4.32 0.0
PK 630.0 4.32 0.0
PK 800.0 4.32 0.25
PK 1000.0 4.32 0.25
PK 1250.0 4.32 0.0
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.25
PK 2500.0 4.32 0.0
PK 3150.0 4.32 0.0
PK 4000.0 4.32 0.25
PK 5000.0 4.32 0.0
PK 6300.0 4.32 0.0
PK 8000.0 4.32 0.0
PK 10000.0 4.32 0.25
PK 12000.0 4.32 0.5
PK 16000.0 4.32 0.75
PK 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Revel C52: comparison between EQs
Revel C52

Comparison betweens various EQs

Revel C52

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
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