What we know about the measurement:

JBL Northridge Series N28 is a passive bookshelves

  • Quality of the measurement data is medium.
  • Origin of the data is JBL.
  • Format of the data is .
  • -3dB (resp. -6db) point v.s. reference is at 55.0Hz (resp. 48.6Hz).
  • Reference level is normalised to 0.8dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 5.3dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.09 and would be 5.37 with a perfect subwoofer.
      • Details: NBD: ON 0.773, LW 0.726, SP 0.685, PIR 0.642; SM: SP0.79, PIR0.661; LFQ 1.521, LFX 48Hz
    • Tonality (Preference) Score is 5.38 with an EQ and would be 7.16 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.591, LW 0.511, SP 0.38, PIR 0.374; SM: SP0.908, PIR0.893; LFQ 1.365, LFX 37Hz
JBL Northridge Series N28
AutomaticEQ (IIR)
Set preamp gain to: -3.0dB.
Type Freq Q Gain
PK 37.0 1.66 2.99
PK 98.0 1.76 -0.47
PK 579.0 0.92 -2.5
PK 3068.0 2.86 -7.49
PK 4818.0 0.37 2.25
PK 6144.0 0.28 2.52
PK 7834.0 1.06 -8.73
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
JBL Northridge Series N28
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 0.0
PK 100.0 2.14 0.0
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 0.0
PK 1600.0 2.14 0.0
PK 2500.0 2.14 0.25
PK 4000.0 2.14 0.5
PK 6300.0 2.14 -0.25
PK 10000.0 2.14 -0.25
PK 16000.0 2.14 0.25
Download
This EQ is designed for a 15 bands graphical EQ.
JBL Northridge Series N28
Graphic EQ 31 bands
Set preamp gain to: -0.9dB.
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 0.0
PK 100.0 4.32 0.0
PK 125.0 4.32 0.0
PK 160.0 4.32 0.0
PK 200.0 4.32 0.0
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 -0.25
PK 500.0 4.32 -0.25
PK 630.0 4.32 -0.25
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 0.25
PK 2000.0 4.32 0.5
PK 2500.0 4.32 0.5
PK 3150.0 4.32 0.0
PK 4000.0 4.32 0.75
PK 5000.0 4.32 0.5
PK 6300.0 4.32 0.0
PK 8000.0 4.32 -0.5
PK 10000.0 4.32 0.0
PK 12000.0 4.32 0.5
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 Northridge Series N28: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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