What we know about the measurement:

RCF NX 915-A is an active liveportable

  • Quality of the measurement data is medium.
  • Origin of the data is RCF.
  • Format of the data is a GLL file .
  • -3dB (resp. -6db) point v.s. reference is at 53.0Hz (resp. 50.0Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.6dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-20.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-10.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.27 and would be 4.69 with a perfect subwoofer.
      • Details: NBD: ON 0.646, LW 0.55, SP 0.616, PIR 0.552; SM: SP0.389, PIR0.118; LFQ 3.07, LFX 53Hz
    • Tonality (Preference) Score is 4.96 with an EQ and would be 7.34 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.431, LW 0.402, SP 0.547, PIR 0.436; SM: SP0.921, PIR0.878; LFQ 3.07, LFX 51Hz
  • Vendor specifications:
    • Dispersion: 100° horizontal and 60° vertical.
    • SPL
      • peak: 131 dB
    • Size
      • Width 420mm
      • Height 705mm
      • Depth 451 mm)
    • Weight 24.1 kg
RCF NX 915-A
AutomaticEQ (IIR)
Set preamp gain to: -2.0dB.
Type Freq Q Gain
6 58.0 0.51 -2.77
3 320.0 2.79 -2.06
3 646.0 0.32 2.89
3 790.0 2.96 1.95
3 1103.0 2.92 -1.09
3 1348.0 2.52 2.9
3 5870.0 2.98 2.33
3 7173.0 0.9 -2.66
3 12246.0 1.17 -2.79
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

RCF NX 915-A filters_auto_eq

AutomaticEQ

RCF NX 915-A filters_eq_full

Target v.s. EQ

RCF NX 915-A
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.0
3 100.0 2.14 -0.25
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 0.0
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 -0.5
3 6300.0 2.14 -0.5
3 10000.0 2.14 -1.0
3 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

RCF NX 915-A
Graphic EQ 31 bands
Set preamp gain to: -0.3dB.
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 -0.25
3 250.0 4.32 -0.25
3 315.0 4.32 -0.5
3 400.0 4.32 -0.25
3 500.0 4.32 0.0
3 630.0 4.32 -0.25
3 800.0 4.32 0.0
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 -0.25
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.5
3 5000.0 4.32 -0.5
3 6300.0 4.32 -0.5
3 8000.0 4.32 -0.75
3 10000.0 4.32 -0.75
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.

RCF NX 915-A: comparison between EQs
RCF NX 915-A

Comparison betweens various EQs

RCF NX 915-A

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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