What we know about the measurement:

JBL Synthesis SAM3HA is a passive center

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is a scanned image .
  • Sensitivity: 86.8dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 64.8Hz (resp. 54.5Hz).
  • Reference level is normalised to 0.9dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.6dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.31 and would be 7.83 with a perfect subwoofer.
      • Details: NBD: ON 0.305, LW 0.285, SP 0.407, PIR 0.34; SM: SP0.89, PIR0.83; LFQ 1.953, LFX 55Hz
    • Tonality (Preference) Score is 5.93 with an EQ and would be 7.89 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.331, LW 0.225, SP 0.351, PIR 0.254; SM: SP0.879, PIR0.775; LFQ 1.856, LFX 41Hz
  • Link to Original review.
JBL Synthesis SAM3HA
AutomaticEQ (IIR)
Set preamp gain to: -5.7dB.
Type Freq Q Gain
5 64.0 1.3 2.96
3 102.0 1.69 -2.2
3 129.0 1.07 -2.73
3 245.0 0.53 -2.8
3 418.0 0.67 -1.97
3 817.0 1.64 1.53
3 2082.0 0.37 -2.81
3 4803.0 1.15 1.26
5 8199.0 0.95 2.93
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

JBL Synthesis SAM3HA filters_auto_eq

AutomaticEQ

JBL Synthesis SAM3HA filters_eq_full

Target v.s. EQ

JBL Synthesis SAM3HA
Graphic EQ 15 bands
Set preamp gain to: -1.0dB.
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 -0.5
3 160.0 2.14 -0.5
3 250.0 2.14 -0.25
3 400.0 2.14 -0.25
3 630.0 2.14 0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 0.0
3 2500.0 2.14 -0.25
3 4000.0 2.14 0.5
3 6300.0 2.14 0.5
3 10000.0 2.14 0.0
3 16000.0 2.14 -0.25
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These EQ is designed for a 15 bands graphical EQ.

JBL Synthesis SAM3HA
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
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 0.0
3 100.0 4.32 -0.25
3 125.0 4.32 -0.5
3 160.0 4.32 -0.5
3 200.0 4.32 -0.25
3 250.0 4.32 -0.25
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 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 0.0
3 1250.0 4.32 -0.25
3 1600.0 4.32 0.0
3 2000.0 4.32 -0.25
3 2500.0 4.32 -0.25
3 3150.0 4.32 0.0
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 -0.25
3 12000.0 4.32 -0.25
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 SAM3HA: comparison between EQs
JBL Synthesis SAM3HA

Comparison betweens various EQs

JBL Synthesis SAM3HA

Improvements made by EQ

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