What we know about the measurement:

JBL PRX915 is an active liveportable that cost around 1100 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 58.0Hz (resp. 53.0Hz).
  • Reference level is normalised to -0.1dB 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 2.74 and would be 5.11 with a perfect subwoofer.
      • Details: NBD: ON 0.671, LW 0.715, SP 0.872, PIR 0.773; SM: SP0.736, PIR0.61; LFQ 1.744, LFX 51Hz
    • Tonality (Preference) Score is 4.17 with an EQ and would be 6.59 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.469, LW 0.507, SP 0.765, PIR 0.608; SM: SP0.88, PIR0.819; LFQ 1.744, LFX 52Hz
  • Link to Original review.
  • Vendor specifications:
    • Dispersion: 90° horizontal and 50° vertical.
    • SPL
      • max: 133 dB
    • Size
      • Width 465mm
      • Height 717mm
      • Depth 383mm
    • Weight 24.1kg
JBL PRX915
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
PK 89.0 1.3 -2.99
PK 187.0 1.17 2.81
PK 342.0 1.0 -2.57
PK 565.0 2.43 1.55
PK 1032.0 2.97 1.79
PK 1822.0 2.44 2.91
PK 3801.0 2.93 1.5
PK 5135.0 2.91 -2.64
HS 8199.0 1.04 -1.89
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This EQ optimise the Harman score and is a good start for far field listening like in your living room.
JBL PRX915
Graphic EQ 15 bands
Set preamp gain to: -0.5dB.
Type Freq Q Gain
PK 25.0 2.14 0.25
PK 40.0 2.14 0.25
PK 63.0 2.14 0.0
PK 100.0 2.14 -0.25
PK 160.0 2.14 0.0
PK 250.0 2.14 0.0
PK 400.0 2.14 -0.25
PK 630.0 2.14 0.0
PK 1000.0 2.14 0.25
PK 1600.0 2.14 0.25
PK 2500.0 2.14 0.0
PK 4000.0 2.14 0.25
PK 6300.0 2.14 0.0
PK 10000.0 2.14 0.0
PK 16000.0 2.14 0.5
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This EQ is designed for a 15 bands graphical EQ.
JBL PRX915
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
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 0.0
PK 80.0 4.32 -0.5
PK 100.0 4.32 -0.25
PK 125.0 4.32 0.0
PK 160.0 4.32 0.0
PK 200.0 4.32 0.25
PK 250.0 4.32 0.0
PK 315.0 4.32 -0.25
PK 400.0 4.32 0.0
PK 500.0 4.32 0.0
PK 630.0 4.32 0.0
PK 800.0 4.32 0.0
PK 1000.0 4.32 0.25
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 0.25
PK 3150.0 4.32 0.25
PK 4000.0 4.32 0.25
PK 5000.0 4.32 0.0
PK 6300.0 4.32 0.0
PK 8000.0 4.32 0.0
PK 10000.0 4.32 0.0
PK 12000.0 4.32 -0.25
PK 16000.0 4.32 0.5
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 PRX915: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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