What we know about the measurement:

JBL Synthesis SAM1HF + SAM2LF 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: 92.5dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 83.1Hz (resp. 68.0Hz).
  • Reference level is normalised to 0.9dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.1dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.48 and would be 8.31 with a perfect subwoofer.
      • Details: NBD: ON 0.322, LW 0.264, SP 0.304, PIR 0.247; SM: SP0.89, PIR0.937; LFQ 1.106, LFX 65Hz
    • Tonality (Preference) Score is 6.29 with an EQ and would be 8.43 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.295, LW 0.235, SP 0.305, PIR 0.242; SM: SP0.907, PIR0.954; LFQ 0.91, LFX 45Hz
  • Link to Original review.
JBL Synthesis SAM1HF + SAM2LF
AutomaticEQ (IIR)
Set preamp gain to: -5.8dB.
Type Freq Q Gain
5 83.0 1.14 2.95
3 106.0 1.79 -2.33
3 187.0 0.69 -2.06
3 529.0 0.45 -2.97
3 2302.0 1.07 -1.77
3 2909.0 2.48 -0.36
5 4064.0 0.25 2.96
Download

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

JBL Synthesis SAM1HF + SAM2LF filters_auto_eq

AutomaticEQ

JBL Synthesis SAM1HF + SAM2LF filters_eq_full

Target v.s. EQ

JBL Synthesis SAM1HF + SAM2LF
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 0.0
3 160.0 2.14 -0.25
3 250.0 2.14 0.0
3 400.0 2.14 0.0
3 630.0 2.14 0.25
3 1000.0 2.14 0.5
3 1600.0 2.14 0.5
3 2500.0 2.14 0.5
3 4000.0 2.14 0.5
3 6300.0 2.14 0.5
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 SAM1HF + SAM2LF
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 0.0
3 125.0 4.32 -0.25
3 160.0 4.32 -0.25
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 0.0
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 0.25
3 1600.0 4.32 0.25
3 2000.0 4.32 0.25
3 2500.0 4.32 0.25
3 3150.0 4.32 0.25
3 4000.0 4.32 0.25
3 5000.0 4.32 0.0
3 6300.0 4.32 0.25
3 8000.0 4.32 0.0
3 10000.0 4.32 0.0
3 12000.0 4.32 0.0
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

JBL Synthesis SAM1HF + SAM2LF: comparison between EQs
JBL Synthesis SAM1HF + SAM2LF

Comparison betweens various EQs

JBL Synthesis SAM1HF + SAM2LF

Improvements made by EQ

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