What we know about the measurement:

JBL 708P is an active bookshelves that cost around 3600 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • -3dB (resp. -6db) point v.s. reference is at 43.9Hz (resp. 39.6Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.6dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-30.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.78 and would be 6.66 with a perfect subwoofer.
      • Details: NBD: ON 0.424, LW 0.408, SP 0.39, PIR 0.389; SM: SP0.777, PIR0.515; LFQ 1.013, LFX 39Hz
    • Tonality (Preference) Score is 6.24 with an EQ and would be 8.11 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.359, LW 0.322, SP 0.305, PIR 0.286; SM: SP0.965, PIR0.941; LFQ 1.013, LFX 39Hz
  • Link to original Review: eac review. Links to other reviews: asr review .
  • Vendor specifications:
    • SPL
      • max: 108 dB
      • peak: 114 dB
    • Size
      • Width 250mm
      • Height 441mm
      • Depth 419 mm)
    • Weight 18.1 kg
JBL 708P
AutomaticEQ (IIR)
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 109.0 1.25 -0.71
3 540.0 2.56 1.16
3 942.0 2.98 -2.96
3 1202.0 1.74 1.8
3 3525.0 2.84 -1.49
3 7059.0 1.56 -2.44
3 13652.0 1.98 -4.83
Download

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

JBL 708P filters_auto_eq

AutomaticEQ

JBL 708P filters_eq_full

Target v.s. EQ

JBL 708P
flipflop@ASR (IIR)
Set preamp gain to: -2.4dB.
Type Freq Q Gain
3 475.0 6.0 1.1
3 667.0 8.0 -1.2
3 747.0 10.0 2.9
3 915.0 3.8 -2.8
3 1135.0 5.0 2.0
3 1340.0 15.0 -0.6
3 1565.0 7.0 2.4
3 1752.0 12.0 -1.0
3 1925.0 15.0 1.5
3 2304.0 11.0 2.5
3 2520.0 15.0 -1.4
3 2740.0 17.0 1.2
3 2980.0 15.0 -0.7
3 3680.0 12.0 -1.2
3 4480.0 10.0 0.8
3 5060.0 5.0 -0.5
3 7350.0 1.8 -1.4
3 9300.0 6.0 1.8
3 10700.0 7.0 1.6
3 14150.0 2.0 -1.9
Download

These EQ is designed by ASR member flipflop.

JBL 708P
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.0
3 100.0 2.14 -0.25
3 160.0 2.14 -0.25
3 250.0 2.14 0.0
3 400.0 2.14 0.0
3 630.0 2.14 0.0
3 1000.0 2.14 -0.25
3 1600.0 2.14 0.25
3 2500.0 2.14 0.0
3 4000.0 2.14 -0.25
3 6300.0 2.14 -0.5
3 10000.0 2.14 -0.25
3 16000.0 2.14 -0.5
Download

These EQ is designed for a 15 bands graphical EQ.

JBL 708P
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.5
3 31.0 4.32 0.5
3 40.0 4.32 0.5
3 50.0 4.32 0.25
3 63.0 4.32 0.0
3 80.0 4.32 -0.25
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 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.0
3 500.0 4.32 0.25
3 630.0 4.32 0.0
3 800.0 4.32 -0.25
3 1000.0 4.32 -0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.25
3 2000.0 4.32 0.0
3 2500.0 4.32 0.0
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.25
3 5000.0 4.32 -0.25
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 -0.5
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

JBL 708P: comparison between EQs
JBL 708P

Comparison betweens various EQs

JBL 708P

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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