What we know about the measurement:

KEF T301C is a passive center that cost around 300 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: 86.3dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 159.7Hz (resp. 139.2Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 5.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-10.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-60.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is -0.79 and would be 3.49 with a perfect subwoofer.
      • Details: NBD: ON 0.848, LW 0.781, SP 0.963, PIR 0.802; SM: SP0.007, PIR0.14; LFQ 1.053, LFX 143Hz
    • Tonality (Preference) Score is 2.27 with an EQ and would be 5.98 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.689, LW 0.549, SP 0.668, PIR 0.486; SM: SP0.754, PIR0.634; LFQ 0.82, LFX 105Hz
  • Link to Original review.
KEF T301C
AutomaticEQ (IIR)
Set preamp gain to: -5.1dB.
Type Freq Q Gain
3 105.0 1.19 3.0
3 204.0 1.84 -4.01
3 211.0 0.25 3.0
3 1010.0 3.0 -4.62
3 2168.0 2.99 2.78
3 4051.0 0.93 -4.26
3 8694.0 0.46 -4.72
Download

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

KEF T301C filters_auto_eq

AutomaticEQ

KEF T301C filters_eq_full

Target v.s. EQ

KEF T301C
Graphic EQ 15 bands
Set preamp gain to: -0.4dB.
Type Freq Q Gain
3 25.0 2.14 0.25
3 40.0 2.14 0.25
3 63.0 2.14 0.25
3 100.0 2.14 0.25
3 160.0 2.14 0.25
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 -0.5
3 1600.0 2.14 0.0
3 2500.0 2.14 -0.25
3 4000.0 2.14 -0.75
3 6300.0 2.14 -0.75
3 10000.0 2.14 -0.5
3 16000.0 2.14 0.0
Download

These EQ is designed for a 15 bands graphical EQ.

KEF T301C
Graphic EQ 31 bands
Set preamp gain to: -0.4dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.25
3 31.0 4.32 0.25
3 40.0 4.32 0.25
3 50.0 4.32 0.25
3 63.0 4.32 0.25
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 0.25
3 200.0 4.32 0.0
3 250.0 4.32 0.0
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 0.0
3 2000.0 4.32 0.25
3 2500.0 4.32 0.0
3 3150.0 4.32 -0.5
3 4000.0 4.32 -0.75
3 5000.0 4.32 -0.75
3 6300.0 4.32 -0.5
3 8000.0 4.32 -0.5
3 10000.0 4.32 -0.5
3 12000.0 4.32 -0.25
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

KEF T301C: comparison between EQs
KEF T301C

Comparison betweens various EQs

KEF T301C

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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