What we know about the measurement:

JBL Studio 520C is a passive center

  • Quality of the measurement data is high.
  • Origin of the data is ErinsAudioCorner.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 85.4dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 98.1Hz (resp. 74.7Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.3dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-30.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.14 and would be 5.13 with a perfect subwoofer.
      • Details: NBD: ON 0.609, LW 0.512, SP 0.506, PIR 0.446; SM: SP0.572, PIR0.131; LFQ 0.928, LFX 71Hz
    • Tonality (Preference) Score is 5.93 with an EQ and would be 8.01 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.39, LW 0.311, SP 0.376, PIR 0.287; SM: SP0.964, PIR0.932; LFQ 0.664, LFX 43Hz
  • Vertical measurement
  • Link to Original review.
JBL Studio 520C
AutomaticEQ (IIR)
Set preamp gain to: -4.5dB.
Type Freq Q Gain
3 46.0 0.61 3.0
3 98.0 0.42 3.0
3 149.0 0.91 -4.11
3 2023.0 2.96 3.0
3 3650.0 2.43 -1.27
3 6818.0 2.87 2.98
3 10341.0 0.52 -5.83
Download

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

JBL Studio 520C filters_auto_eq

AutomaticEQ

JBL Studio 520C filters_eq_full

Target v.s. EQ

JBL Studio 520C
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.5
3 100.0 2.14 0.5
3 160.0 2.14 0.0
3 250.0 2.14 0.0
3 400.0 2.14 -0.25
3 630.0 2.14 -0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 0.0
3 2500.0 2.14 0.0
3 4000.0 2.14 -0.75
3 6300.0 2.14 -0.5
3 10000.0 2.14 -1.0
3 16000.0 2.14 -0.25
Download

These EQ is designed for a 15 bands graphical EQ.

JBL Studio 520C
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 0.25
3 100.0 4.32 0.25
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 0.0
3 800.0 4.32 0.0
3 1000.0 4.32 0.0
3 1250.0 4.32 0.0
3 1600.0 4.32 0.0
3 2000.0 4.32 0.25
3 2500.0 4.32 0.0
3 3150.0 4.32 -0.25
3 4000.0 4.32 -0.5
3 5000.0 4.32 -0.5
3 6300.0 4.32 -0.25
3 8000.0 4.32 -0.5
3 10000.0 4.32 -0.75
3 12000.0 4.32 -1.0
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 Studio 520C: comparison between EQs
JBL Studio 520C

Comparison betweens various EQs

JBL Studio 520C

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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