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 153mm
    • Weight 11.2kg
JBL Synthesis SCL-3
AutomaticEQ (IIR)
Set preamp gain to: -2.4dB.
Type Freq Q Gain
PK 47.0 0.71 3.0
PK 178.0 0.59 -3.24
PK 382.0 2.96 1.65
PK 765.0 2.97 -0.86
PK 2765.0 1.62 2.99
PK 4818.0 2.71 -1.15
PK 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
PK 25.0 2.14 0.25
PK 40.0 2.14 0.25
PK 63.0 2.14 0.25
PK 100.0 2.14 0.0
PK 160.0 2.14 -0.5
PK 250.0 2.14 -0.5
PK 400.0 2.14 -0.25
PK 630.0 2.14 -0.25
PK 1000.0 2.14 -0.25
PK 1600.0 2.14 0.0
PK 2500.0 2.14 -0.25
PK 4000.0 2.14 -0.75
PK 6300.0 2.14 -1.0
PK 10000.0 2.14 -1.0
PK 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
PK 20.0 4.32 0.0
PK 25.0 4.32 0.25
PK 31.0 4.32 0.25
PK 40.0 4.32 0.25
PK 50.0 4.32 0.25
PK 63.0 4.32 0.25
PK 80.0 4.32 0.0
PK 100.0 4.32 0.0
PK 125.0 4.32 -0.25
PK 160.0 4.32 -0.5
PK 200.0 4.32 -0.5
PK 250.0 4.32 -0.5
PK 315.0 4.32 -0.25
PK 400.0 4.32 -0.25
PK 500.0 4.32 -0.25
PK 630.0 4.32 -0.25
PK 800.0 4.32 -0.25
PK 1000.0 4.32 -0.25
PK 1250.0 4.32 -0.5
PK 1600.0 4.32 0.0
PK 2000.0 4.32 0.0
PK 2500.0 4.32 -0.25
PK 3150.0 4.32 -0.25
PK 4000.0 4.32 -0.75
PK 5000.0 4.32 -0.75
PK 6300.0 4.32 -1.0
PK 8000.0 4.32 -1.0
PK 10000.0 4.32 -1.0
PK 12000.0 4.32 -1.0
PK 16000.0 4.32 -0.75
PK 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
Frequency Frequency with EQ
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