What we know about the measurement:

JBL 104 is an active bookshelves that cost around 130 USD for a pair.

  • 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 71.8Hz (resp. 62.3Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.9dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-60.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.65 and would be 4.38 with a perfect subwoofer.
      • Details: NBD: ON 0.924, LW 0.648, SP 0.515, PIR 0.52; SM: SP0.576, PIR0.24; LFQ 0.135, LFX 62Hz
    • Tonality (Preference) Score is 4.17 with an EQ and would be 6.71 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.758, LW 0.51, SP 0.383, PIR 0.362; SM: SP0.906, PIR0.864; LFQ 0.135, LFX 56Hz
  • Link to Original review.
JBL 104
AutomaticEQ (IIR)
Set preamp gain to: -2.5dB.
Type Freq Q Gain
3 58.0 1.97 2.99
3 155.0 0.85 -2.28
3 356.0 2.95 1.94
3 579.0 1.42 1.05
3 3779.0 2.32 2.81
3 4818.0 1.54 -6.94
3 15150.0 1.11 -7.47
Download

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

JBL 104 filters_auto_eq

AutomaticEQ

JBL 104 filters_eq_full

Target v.s. EQ

JBL 104
AutomaticEQ LW (IIR)
Set preamp gain to: -2.1dB.
Type Freq Q Gain
3 69.0 2.97 2.88
3 172.0 0.71 -3.16
3 356.0 0.68 2.34
3 4818.0 2.94 -1.83
3 7566.0 2.95 -2.05
3 9989.0 2.99 2.8
3 14633.0 1.58 -5.08
Download

These EQ optimise for a flat listening window and is a good start for near field listening like on your desk.

JBL 104
flipflop@ASR (IIR)
Set preamp gain to: -2.1dB.
Type Freq Q Gain
3 387.0 7.0 1.4
3 541.0 2.485 0.9
3 835.0 10.0 0.6
3 1818.0 16.0 -1.8
3 2643.0 5.0 -1.3
3 2951.0 5.0 -9.8
3 3043.0 5.0 11.9
3 3959.0 4.984 3.1
3 4728.0 1.771 -6.9
3 6203.0 2.717 -1.4
3 7216.0 4.612 -4.4
3 8695.0 2.733 -8.4
3 9877.0 1.275 12.0
3 11157.0 2.479 -7.0
3 13185.0 5.0 -1.3
3 14572.0 5.0 -0.6
3 14802.0 1.017 -7.4
3 16211.0 3.445 -1.1
3 17769.0 5.0 -1.5
3 19060.0 5.0 1.6
Download

These EQ is designed by ASR member flipflop.

JBL 104
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 25.0 2.14 0.25
3 40.0 2.14 0.25
3 63.0 2.14 0.25
3 100.0 2.14 -0.25
3 160.0 2.14 -0.5
3 250.0 2.14 -0.25
3 400.0 2.14 0.0
3 630.0 2.14 -0.25
3 1000.0 2.14 -0.25
3 1600.0 2.14 -0.25
3 2500.0 2.14 -0.5
3 4000.0 2.14 -0.5
3 6300.0 2.14 -1.0
3 10000.0 2.14 -0.5
3 16000.0 2.14 -1.0
Download

These EQ is designed for a 15 bands graphical EQ.

JBL 104
Graphic EQ 31 bands
Set preamp gain to: -0.4dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.25
3 31.0 4.32 0.25
3 40.0 4.32 0.25
3 50.0 4.32 0.25
3 63.0 4.32 0.25
3 80.0 4.32 0.0
3 100.0 4.32 -0.25
3 125.0 4.32 -0.25
3 160.0 4.32 -0.25
3 200.0 4.32 -0.25
3 250.0 4.32 -0.25
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 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 -0.25
3 1250.0 4.32 -0.25
3 1600.0 4.32 0.0
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 -0.25
3 5000.0 4.32 -0.75
3 6300.0 4.32 -0.5
3 8000.0 4.32 -0.5
3 10000.0 4.32 0.25
3 12000.0 4.32 -0.5
3 16000.0 4.32 -1.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

JBL 104: comparison between EQs
JBL 104

Comparison betweens various EQs

JBL 104

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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