What we know about the measurement:

JBL Synthesis SK2-3300 is a passive bookshelves

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a scanned image .
  • Sensitivity: 92.1dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 66.6Hz (resp. 57.6Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.9dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.72 and would be 7.21 with a perfect subwoofer.
      • Details: NBD: ON 0.333, LW 0.282, SP 0.471, PIR 0.394; SM: SP0.774, PIR0.664; LFQ 2.704, LFX 54Hz
    • Tonality (Preference) Score is 5.88 with an EQ and would be 8.2 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.303, LW 0.214, SP 0.396, PIR 0.281; SM: SP0.932, PIR0.913; LFQ 2.704, LFX 50Hz
  • Link to Original review.
JBL Synthesis SK2-3300
AutomaticEQ (IIR)
Set preamp gain to: -2.9dB.
Type Freq Q Gain
5 109.0 0.64 2.99
3 181.0 0.87 -2.98
3 214.0 1.8 2.43
3 354.0 0.89 0.68
3 529.0 0.48 -1.32
3 903.0 2.35 2.94
3 3676.0 2.13 -0.73
3 5135.0 2.91 -1.24
3 7669.0 1.3 -2.5
Download

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

JBL Synthesis SK2-3300 filters_auto_eq

AutomaticEQ

JBL Synthesis SK2-3300 filters_eq_full

Target v.s. EQ

JBL Synthesis SK2-3300
Graphic EQ 15 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 25.0 2.14 0.75
3 40.0 2.14 0.75
3 63.0 2.14 0.75
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 0.0
3 1000.0 2.14 0.75
3 1600.0 2.14 0.25
3 2500.0 2.14 0.25
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.5
3 10000.0 2.14 0.25
3 16000.0 2.14 0.5
Download

These EQ is designed for a 15 bands graphical EQ.

JBL Synthesis SK2-3300
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 0.5
3 100.0 4.32 0.25
3 125.0 4.32 0.0
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 0.0
3 800.0 4.32 0.5
3 1000.0 4.32 0.5
3 1250.0 4.32 0.25
3 1600.0 4.32 0.25
3 2000.0 4.32 0.25
3 2500.0 4.32 0.0
3 3150.0 4.32 0.0
3 4000.0 4.32 0.0
3 5000.0 4.32 -0.25
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 0.5
3 16000.0 4.32 0.5
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

JBL Synthesis SK2-3300: comparison between EQs
JBL Synthesis SK2-3300

Comparison betweens various EQs

JBL Synthesis SK2-3300

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
;