What we know about the measurement:

JBL SLP12 is a passive surround that cost around 200 USD each.

  • Quality of the measurement data is low.
  • Origin of the data is JBL.
  • Format of the data is a GLL file .
  • Sensitivity: 85.5dB (avg. 100Hz-1kHz for 2.83V estimated at 1m) . Sensitivity computed at the measurement distance (10m) over the same frequency range: 65.5dB.
  • -3dB (resp. -6db) point v.s. reference is at 103.0Hz (resp. 90.0Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.2dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Note: The tonality (Preference) score does not make sense for surround speakers. Don't give too much credits to the value.
    • Tonality (Preference) Score is 2.02 and would be 5.38 with a perfect subwoofer.
      • Details: NBD: ON 0.647, LW 0.665, SP 0.695, PIR 0.666; SM: SP0.712, PIR0.562; LFQ 0.943, LFX 87Hz
    • Tonality (Preference) Score is 4.12 with an EQ and would be 7.54 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.375, LW 0.38, SP 0.462, PIR 0.389; SM: SP0.911, PIR0.844; LFQ 0.943, LFX 89Hz
  • Note: This is a speaker designed to be mounted on a wall..
  • Vendor specifications:
    • Sensitivity 84 dB
    • Impedance 8 Ohm
    • SPL
      • continuous: 100 dB
      • peak: 106 dB
    • Size
      • Width 230mm
      • Height 248mm
      • Depth 100 mm)
    • Weight 1.9 kg
JBL SLP12
AutomaticEQ (IIR)
Set preamp gain to: -4.2dB.
Type Freq Q Gain
3 404.0 1.26 2.85
3 625.0 1.01 2.88
3 1394.0 0.46 -2.06
3 1648.0 2.79 -2.9
3 2461.0 2.93 -2.94
3 2909.0 2.76 1.69
3 6276.0 3.0 2.86
3 10361.0 0.44 2.99
5 12246.0 0.96 -0.56
Download

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

JBL SLP12 filters_auto_eq

AutomaticEQ

JBL SLP12 filters_eq_full

Target v.s. EQ

JBL SLP12
Graphic EQ 15 bands
Set preamp gain to: -1.1dB.
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 0.5
3 160.0 2.14 -0.25
3 250.0 2.14 0.0
3 400.0 2.14 0.5
3 630.0 2.14 0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 -0.5
3 2500.0 2.14 -0.5
3 4000.0 2.14 0.25
3 6300.0 2.14 1.0
3 10000.0 2.14 0.5
3 16000.0 2.14 0.75
Download

These EQ is designed for a 15 bands graphical EQ.

JBL SLP12
Graphic EQ 31 bands
Set preamp gain to: -1.0dB.
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 -0.25
3 200.0 4.32 0.0
3 250.0 4.32 0.0
3 315.0 4.32 0.25
3 400.0 4.32 0.5
3 500.0 4.32 0.5
3 630.0 4.32 0.25
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 -0.5
3 2000.0 4.32 -0.5
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 0.25
3 6300.0 4.32 0.75
3 8000.0 4.32 0.75
3 10000.0 4.32 0.5
3 12000.0 4.32 0.5
3 16000.0 4.32 0.75
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

JBL SLP12: comparison between EQs
JBL SLP12

Comparison betweens various EQs

JBL SLP12

Improvements made by EQ

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