What we know about the measurement:

JBL Synthesis SCL-4 is a passive inwall that cost around 3990 USD each.

  • Quality of the measurement data is medium.
  • Origin of the data is JBL.
  • Format of the data is a scanned image .
  • -3dB (resp. -6db) point v.s. reference is at 83.7Hz (resp. 71.9Hz).
  • Reference level is normalised to 0.7dB 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 2.26 and would be 5.25 with a perfect subwoofer.
      • Details: NBD: ON 0.418, LW 0.452, SP 0.488, PIR 0.47; SM: SP0.233, PIR0.008; LFQ 0.071, LFX 71Hz
    • Tonality (Preference) Score is 5.08 with an EQ and would be 7.96 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.329, LW 0.303, SP 0.354, PIR 0.328; SM: SP0.931, PIR0.896; LFQ 0.2, LFX 67Hz
  • Link to original Review: avs review. .
  • Vendor specifications:
    • Dispersion: 100° horizontal and 100° vertical.
    • Sensitivity 91 dB
    • Impedance 6 Ohm
    • Size
      • Width 409mm
      • Height 636mm
      • Depth 93mm
    • Weight 12.51kg
JBL Synthesis SCL-4
AutomaticEQ (IIR)
Set preamp gain to: -0.0dB.
Type Freq Q Gain
HS 1948.0 1.63 -3.0
PK 4582.0 1.41 -1.94
PK 280.0 3.0 -1.46
PK 736.0 3.0 -1.02
PK 7903.0 2.82 -0.81
PK 131.0 2.97 -0.98
PK 14555.0 2.93 -0.99
PK 14231.0 2.97 -1.03
PK 3692.0 2.99 -1.03
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
JBL Synthesis SCL-4
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 0.0
PK 250.0 2.14 -0.25
PK 400.0 2.14 0.0
PK 630.0 2.14 -0.25
PK 1000.0 2.14 0.0
PK 1600.0 2.14 -0.25
PK 2500.0 2.14 -0.5
PK 4000.0 2.14 -1.0
PK 6300.0 2.14 -1.0
PK 10000.0 2.14 -0.75
PK 16000.0 2.14 -0.75
Download
This EQ is designed for a 15 bands graphical EQ.
JBL Synthesis SCL-4
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 0.25
PK 100.0 4.32 0.0
PK 125.0 4.32 -0.25
PK 160.0 4.32 0.0
PK 200.0 4.32 0.0
PK 250.0 4.32 -0.25
PK 315.0 4.32 -0.25
PK 400.0 4.32 0.0
PK 500.0 4.32 0.0
PK 630.0 4.32 -0.25
PK 800.0 4.32 -0.25
PK 1000.0 4.32 0.0
PK 1250.0 4.32 -0.25
PK 1600.0 4.32 -0.25
PK 2000.0 4.32 -0.5
PK 2500.0 4.32 -0.5
PK 3150.0 4.32 -0.75
PK 4000.0 4.32 -1.0
PK 5000.0 4.32 -1.0
PK 6300.0 4.32 -1.0
PK 8000.0 4.32 -1.0
PK 10000.0 4.32 -0.75
PK 12000.0 4.32 -1.0
PK 16000.0 4.32 -0.75
PK 20000.0 4.32 0.0
Download
This EQ is designed for a 31 bands graphical EQ.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
JBL Synthesis SCL-4: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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