What we know about the measurement:

Revel C25 is a passive center that cost around 825 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: 90.0dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 117.2Hz (resp. 87.9Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.1dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-20.0°, 20.0°) 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 4.15 and would be 7.4 with a perfect subwoofer.
      • Details: NBD: ON 0.46, LW 0.375, SP 0.333, PIR 0.31; SM: SP0.886, PIR0.772; LFQ 1.255, LFX 82Hz
    • Tonality (Preference) Score is 5.81 with an EQ and would be 8.27 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.377, LW 0.288, SP 0.277, PIR 0.23; SM: SP0.958, PIR0.958; LFQ 1.076, LFX 54Hz
  • Horizontal measurement
  • Link to Original review.
Revel C25
AutomaticEQ (IIR)
Set preamp gain to: -5.0dB.
Type Freq Q Gain
3 62.0 0.65 2.99
3 117.0 0.27 2.99
3 184.0 0.76 -3.08
3 1333.0 3.0 -1.43
3 4654.0 2.93 -0.95
3 6361.0 2.97 -1.34
3 9648.0 1.79 -1.33
Download

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

Revel C25 filters_auto_eq

AutomaticEQ

Revel C25 filters_eq_full

Target v.s. EQ

Revel C25
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 0.5
3 160.0 2.14 0.25
3 250.0 2.14 0.25
3 400.0 2.14 0.25
3 630.0 2.14 0.5
3 1000.0 2.14 0.25
3 1600.0 2.14 0.25
3 2500.0 2.14 0.5
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.

Revel C25
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 0.5
3 100.0 4.32 0.5
3 125.0 4.32 0.5
3 160.0 4.32 0.25
3 200.0 4.32 0.25
3 250.0 4.32 0.25
3 315.0 4.32 0.25
3 400.0 4.32 0.25
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 0.25
3 1250.0 4.32 0.25
3 1600.0 4.32 0.25
3 2000.0 4.32 0.25
3 2500.0 4.32 0.5
3 3150.0 4.32 0.25
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 0.0
3 10000.0 4.32 0.0
3 12000.0 4.32 0.25
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.

Revel C25: comparison between EQs
Revel C25

Comparison betweens various EQs

Revel C25

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
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