What we know about the measurement:

JBL PRX635 is a passive liveportable that cost around 2540 USD for a pair.

  • Quality of the measurement data is low.
  • Origin of the data is Princeton.
  • Format of the data is .
  • Sensitivity: 93.0dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • Reference level is normalised to 0.8dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.0dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is -3.77 and would be 2.88 with a perfect subwoofer.
      • Details: NBD: ON 1.065, LW 0.877, SP 0.824, PIR 0.856; SM: SP0.053, PIR0.181; LFQ 10.0, LFX 509Hz
    • Tonality (Preference) Score is -3.83 with an EQ and would be 2.82 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 1.107, LW 0.897, SP 0.833, PIR 0.862; SM: SP0.36, PIR0.208; LFQ 10.0, LFX 509Hz
  • Link to Original review.
JBL PRX635
AutomaticEQ (IIR)
Set preamp gain to: -0.5dB.
Type Freq Q Gain
3 29.0 0.44 -8.53
3 77.0 0.3 -8.72
3 125.0 0.43 -8.7
3 792.0 0.99 1.29
3 1586.0 0.35 0.73
3 9001.0 1.99 -3.18
3 12736.0 1.98 -5.5
Download

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

JBL PRX635 filters_auto_eq

AutomaticEQ

JBL PRX635 filters_eq_full

Target v.s. EQ

JBL PRX635
Graphic EQ 15 bands
Set preamp gain to: -1.0dB.
Type Freq Q Gain
3 25.0 2.14 0.0
3 40.0 2.14 0.0
3 63.0 2.14 0.0
3 100.0 2.14 0.0
3 160.0 2.14 0.0
3 250.0 2.14 0.0
3 400.0 2.14 0.0
3 630.0 2.14 0.5
3 1000.0 2.14 0.75
3 1600.0 2.14 0.5
3 2500.0 2.14 0.75
3 4000.0 2.14 0.0
3 6300.0 2.14 0.0
3 10000.0 2.14 0.0
3 16000.0 2.14 -0.25
Download

These EQ is designed for a 15 bands graphical EQ.

JBL PRX635
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 0.0
3 31.0 4.32 0.0
3 40.0 4.32 0.0
3 50.0 4.32 0.0
3 63.0 4.32 0.0
3 80.0 4.32 0.0
3 100.0 4.32 0.0
3 125.0 4.32 0.0
3 160.0 4.32 0.0
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 0.5
3 800.0 4.32 0.5
3 1000.0 4.32 0.5
3 1250.0 4.32 0.5
3 1600.0 4.32 0.25
3 2000.0 4.32 0.25
3 2500.0 4.32 0.5
3 3150.0 4.32 0.25
3 4000.0 4.32 0.0
3 5000.0 4.32 0.0
3 6300.0 4.32 0.0
3 8000.0 4.32 0.0
3 10000.0 4.32 0.0
3 12000.0 4.32 -0.25
3 16000.0 4.32 -0.25
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

JBL PRX635: comparison between EQs
JBL PRX635

Comparison betweens various EQs

JBL PRX635

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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