What we know about the measurement:

JBL Synthesis SCL-6 is a passive inwall that cost around 1650 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 91.6dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 67.4Hz (resp. 55.7Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Note: The tonality (Preference) score does not make sense for inwall speakers. Don't give too much credits to the value.
    • Tonality (Preference) Score is 4.43 and would be 6.89 with a perfect subwoofer.
      • Details: NBD: ON 0.48, LW 0.388, SP 0.385, PIR 0.378; SM: SP0.811, PIR0.664; LFQ 0.331, LFX 54Hz
    • Tonality (Preference) Score is 5.73 with an EQ and would be 7.87 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.389, LW 0.297, SP 0.321, PIR 0.294; SM: SP0.931, PIR0.879; LFQ 0.268, LFX 45Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
  • Note: Measured far field without grille.
  • Vendor specifications:
    • Dispersion: 80° horizontal and 80° vertical.
    • Sensitivity 91 dB
    • Impedance 4 Ohm
    • Size
      • Width 796mm
      • Height 185mm
      • Depth 97 mm)
    • Weight 11.61 kg
JBL Synthesis SCL-6
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
5 81.0 1.01 2.99
3 187.0 0.54 -2.94
3 237.0 1.76 1.46
3 418.0 1.65 1.87
3 739.0 2.14 1.6
3 998.0 1.17 -0.74
3 2813.0 2.92 1.87
3 3325.0 2.91 -2.07
6 5677.0 1.22 -2.33
Download

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

JBL Synthesis SCL-6 filters_auto_eq

AutomaticEQ

JBL Synthesis SCL-6 filters_eq_full

Target v.s. EQ

JBL Synthesis SCL-6
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 -0.5
3 250.0 2.14 -0.25
3 400.0 2.14 0.0
3 630.0 2.14 0.0
3 1000.0 2.14 -0.25
3 1600.0 2.14 0.0
3 2500.0 2.14 0.0
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.25
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.

JBL Synthesis SCL-6
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
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 -0.25
3 125.0 4.32 -0.5
3 160.0 4.32 -0.5
3 200.0 4.32 -0.25
3 250.0 4.32 -0.25
3 315.0 4.32 0.0
3 400.0 4.32 0.0
3 500.0 4.32 0.0
3 630.0 4.32 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 -0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.0
3 2000.0 4.32 0.0
3 2500.0 4.32 0.25
3 3150.0 4.32 0.0
3 4000.0 4.32 0.0
3 5000.0 4.32 0.0
3 6300.0 4.32 -0.25
3 8000.0 4.32 -0.25
3 10000.0 4.32 0.25
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.

JBL Synthesis SCL-6: comparison between EQs
JBL Synthesis SCL-6

Comparison betweens various EQs

JBL Synthesis SCL-6

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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