What we know about the measurement:

JBL Synthesis SCL-3 is a passive inwall that cost around 3300 USD each.

  • Quality of the measurement data is medium.
  • Origin of the data is JBL.
  • Format of the data is a scanned image .
  • Sensitivity: 88.8dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 72.4Hz (resp. 58.8Hz).
  • Reference level is normalised to 1.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.1dB over the same frequency range.
  • 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 3.09 and would be 5.74 with a perfect subwoofer.
      • Details: NBD: ON 0.382, LW 0.384, SP 0.449, PIR 0.404; SM: SP0.338, PIR0.096; LFQ 0.152, LFX 59Hz
    • Tonality (Preference) Score is 6.34 with an EQ and would be 8.47 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.225, LW 0.196, SP 0.31, PIR 0.239; SM: SP0.916, PIR0.892; LFQ 0.168, LFX 45Hz
  • Link to original Review: avs review. .
  • Vendor specifications:
    • Dispersion: 90° horizontal and 60° vertical.
    • Sensitivity 91 dB
    • Impedance 6 Ohm
    • Size
      • Width 418mm
      • Height 418mm
      • Depth 153 mm)
    • Weight 11.2 kg
JBL Synthesis SCL-3
AutomaticEQ (IIR)
Set preamp gain to: -2.4dB.
Type Freq Q Gain
3 47.0 0.71 3.0
3 178.0 0.59 -3.24
3 382.0 2.96 1.65
3 765.0 2.97 -0.86
3 2765.0 1.62 2.99
3 4818.0 2.71 -1.15
3 9319.0 0.31 -6.11
Download

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

JBL Synthesis SCL-3 filters_auto_eq

AutomaticEQ

JBL Synthesis SCL-3 filters_eq_full

Target v.s. EQ

JBL Synthesis SCL-3
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
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 0.0
3 160.0 2.14 -0.5
3 250.0 2.14 -0.5
3 400.0 2.14 -0.25
3 630.0 2.14 -0.25
3 1000.0 2.14 -0.25
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 -1.0
3 10000.0 2.14 -1.0
3 16000.0 2.14 -0.75
Download

These EQ is designed for a 15 bands graphical EQ.

JBL Synthesis SCL-3
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 0.0
3 100.0 4.32 0.0
3 125.0 4.32 -0.25
3 160.0 4.32 -0.5
3 200.0 4.32 -0.5
3 250.0 4.32 -0.5
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 -0.5
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 -0.25
3 4000.0 4.32 -0.75
3 5000.0 4.32 -0.75
3 6300.0 4.32 -1.0
3 8000.0 4.32 -1.0
3 10000.0 4.32 -1.0
3 12000.0 4.32 -1.0
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.

JBL Synthesis SCL-3: comparison between EQs
JBL Synthesis SCL-3

Comparison betweens various EQs

JBL Synthesis SCL-3

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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