What we know about the measurement:

RCF ART 708-A MK4 is an active liveportable

  • Quality of the measurement data is low.
  • Origin of the data is RCF.
  • Format of the data is a GLL file .
  • -3dB (resp. -6db) point v.s. reference is at 75.0Hz (resp. 71.0Hz).
  • Reference level is normalised to 0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.9dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.8 and would be 7.83 with a perfect subwoofer.
      • Details: NBD: ON 0.296, LW 0.326, SP 0.41, PIR 0.366; SM: SP0.919, PIR0.852; LFQ 2.338, LFX 73Hz
    • Tonality (Preference) Score is 5.28 with an EQ and would be 8.3 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.269, LW 0.282, SP 0.353, PIR 0.302; SM: SP0.965, PIR0.948; LFQ 2.338, LFX 73Hz
  • Vendor specifications:
    • Dispersion: 100° horizontal and 70° vertical.
    • SPL
      • peak: 127 dB
    • Size
      • Width 291mm
      • Height 480mm
      • Depth 276 mm)
    • Weight 10.4 kg
RCF ART 708-A MK4
AutomaticEQ (IIR)
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 67.0 2.98 2.95
3 88.0 1.35 -3.7
3 211.0 2.96 -0.85
3 1010.0 3.0 -0.88
3 2406.0 0.45 0.91
3 5732.0 0.77 -1.86
3 14134.0 1.92 -2.01
Download

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

RCF ART 708-A MK4 filters_auto_eq

AutomaticEQ

RCF ART 708-A MK4 filters_eq_full

Target v.s. EQ

RCF ART 708-A MK4
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 0.0
3 250.0 2.14 0.0
3 400.0 2.14 0.0
3 630.0 2.14 0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 0.5
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 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

RCF ART 708-A MK4
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 0.0
3 100.0 4.32 -0.5
3 125.0 4.32 -0.25
3 160.0 4.32 0.0
3 200.0 4.32 0.0
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 0.5
3 1600.0 4.32 0.5
3 2000.0 4.32 0.5
3 2500.0 4.32 0.5
3 3150.0 4.32 0.5
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 0.0
3 16000.0 4.32 0.75
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

RCF ART 708-A MK4: comparison between EQs
RCF ART 708-A MK4

Comparison betweens various EQs

RCF ART 708-A MK4

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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