What we know about the measurement:

JBL PRX912 is an active liveportable that cost around 1000 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is JBL.
  • Format of the data is a GLL file .
  • -3dB (resp. -6db) point v.s. reference is at 63.0Hz (resp. 56.0Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 1.8dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.91 and would be 6.39 with a perfect subwoofer.
      • Details: NBD: ON 0.48, LW 0.523, SP 0.773, PIR 0.619; SM: SP0.838, PIR0.756; LFQ 1.475, LFX 54Hz
    • Tonality (Preference) Score is 5.33 with an EQ and would be 7.6 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.315, LW 0.361, SP 0.64, PIR 0.469; SM: SP0.923, PIR0.906; LFQ 1.475, LFX 48Hz
  • Link to Original review.
  • Vendor specifications:
    • Dispersion: 90° horizontal and 50° vertical.
    • SPL
      • max: 132 dB
    • Size
      • Width 394mm
      • Height 636mm
      • Depth 332mm
    • Weight 19.5kg
JBL PRX912
AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
PK 51.0 1.7 2.97
PK 95.0 2.24 -5.12
PK 211.0 0.68 2.77
PK 289.0 2.95 -2.39
PK 439.0 1.94 -1.97
PK 3405.0 0.67 0.95
PK 9001.0 1.84 -2.68
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
JBL PRX912
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 0.25
PK 100.0 2.14 -0.5
PK 160.0 2.14 0.25
PK 250.0 2.14 0.25
PK 400.0 2.14 0.0
PK 630.0 2.14 0.0
PK 1000.0 2.14 0.25
PK 1600.0 2.14 0.5
PK 2500.0 2.14 0.5
PK 4000.0 2.14 0.5
PK 6300.0 2.14 0.25
PK 10000.0 2.14 0.0
PK 16000.0 2.14 0.5
Download
This EQ is designed for a 15 bands graphical EQ.
JBL PRX912
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.5
PK 40.0 4.32 0.5
PK 50.0 4.32 0.5
PK 63.0 4.32 0.5
PK 80.0 4.32 -0.25
PK 100.0 4.32 -0.5
PK 125.0 4.32 0.0
PK 160.0 4.32 0.25
PK 200.0 4.32 0.25
PK 250.0 4.32 0.25
PK 315.0 4.32 0.0
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 0.0
PK 1000.0 4.32 0.5
PK 1250.0 4.32 0.25
PK 1600.0 4.32 0.5
PK 2000.0 4.32 0.5
PK 2500.0 4.32 0.5
PK 3150.0 4.32 0.5
PK 4000.0 4.32 0.5
PK 5000.0 4.32 0.5
PK 6300.0 4.32 0.5
PK 8000.0 4.32 0.25
PK 10000.0 4.32 0.25
PK 12000.0 4.32 0.25
PK 16000.0 4.32 0.25
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 PRX912: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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