What we know about the measurement:

JBL AC25 is a passive bookshelves that cost around 1000 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • -3dB (resp. -6db) point v.s. reference is at 124.5Hz (resp. 105.5Hz).
  • Reference level is normalised to -0.5dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 7.6dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 0.91 and would be 4.49 with a perfect subwoofer.
      • Details: NBD: ON 0.943, LW 0.788, SP 0.658, PIR 0.682; SM: SP0.744, PIR0.519; LFQ 0.85, LFX 98Hz
    • Tonality (Preference) Score is 4.38 with an EQ and would be 7.52 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.533, LW 0.368, SP 0.345, PIR 0.298; SM: SP0.948, PIR0.888; LFQ 0.692, LFX 77Hz
  • Link to Original review.
  • Vendor specifications:
    • Dispersion: 90° horizontal and 90° vertical.
    • Sensitivity 91 dB
    • Impedance 16 Ohm
    • SPL
      • peak: 115 dB
    • Size
      • Width 150mm
      • Height 377mm
      • Depth 178mm
    • Weight 7.5kg
JBL AC25
AutomaticEQ (IIR)
Set preamp gain to: -4.7dB.
Type Freq Q Gain
PK 88.0 1.45 3.0
PK 184.0 1.56 -5.79
PK 190.0 0.25 3.0
PK 504.0 1.85 -2.09
PK 1046.0 2.21 -4.66
PK 1381.0 2.98 3.0
PK 12736.0 2.77 -8.84
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
JBL AC25
maiky76@ASR LW (IIR)
Set preamp gain to: -3.7dB.
Type Freq Q Gain
PK 193.58 2.26 -4.48
PK 533.25 2.6 -1.85
PK 1056.86 2.18 -5.04
PK 1348.37 2.81 2.39
PK 2228.78 2.15 -1.46
PK 5231.49 1.44 3.52
PK 9996.88 3.3 4.21
PK 13200.97 2.52 -5.91
Download
This EQ is designed by ASR member maiky76. This EQ optimise for a flat listening window and is a good start for near field listening like on your desk.
JBL AC25
maiky76@ASR (IIR)
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 189.98 1.97 -4.55
PK 514.79 1.7 -2.07
PK 1069.58 1.64 -5.04
PK 1366.53 4.7 3.41
PK 2416.09 3.15 -2.32
PK 3966.22 4.05 -2.0
PK 4279.24 4.51 2.02
PK 10241.22 4.62 3.16
PK 13200.97 1.92 -8.02
Download
This EQ is designed by ASR member maiky76. This EQ optimise the Harman score and is a good start for far field listening like in your living room.
JBL AC25
Graphic EQ 15 bands
Set preamp gain to: -1.3dB.
Type Freq Q Gain
PK 25.0 2.14 0.75
PK 40.0 2.14 0.75
PK 63.0 2.14 0.75
PK 100.0 2.14 0.75
PK 160.0 2.14 -0.25
PK 250.0 2.14 0.0
PK 400.0 2.14 0.25
PK 630.0 2.14 0.25
PK 1000.0 2.14 -0.25
PK 1600.0 2.14 0.75
PK 2500.0 2.14 0.5
PK 4000.0 2.14 0.75
PK 6300.0 2.14 1.0
PK 10000.0 2.14 0.75
PK 16000.0 2.14 -0.25
Download
This EQ is designed for a 15 bands graphical EQ.
JBL AC25
Graphic EQ 31 bands
Set preamp gain to: -1.0dB.
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 0.5
PK 100.0 4.32 0.5
PK 125.0 4.32 0.5
PK 160.0 4.32 -0.25
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 0.25
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 0.25
PK 2500.0 4.32 0.25
PK 3150.0 4.32 0.5
PK 4000.0 4.32 0.5
PK 5000.0 4.32 0.75
PK 6300.0 4.32 0.5
PK 8000.0 4.32 0.5
PK 10000.0 4.32 0.5
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 AC25: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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