What we know about the measurement:

JBL C211 is a passive cinema

  • Quality of the measurement data is low.
  • Origin of the data is JBL.
  • Format of the data is a GLL file .
  • Sensitivity:
    • Sensitivity: 96.6dB (avg. 100Hz-1kHz for 2.83V estimated at 1m).
    • Sensitivity: 76.6dB computed at the measurement distance (10.0m) over the same frequency range.
  • -3dB (resp. -6db) point v.s. reference is at 90.0Hz (resp. 61.5Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.7dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) 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 1.14 and would be 4.06 with a perfect subwoofer.
      • Details: NBD: ON 0.834, LW 0.849, SP 0.829, PIR 0.829; SM: SP0.688, PIR0.404; LFQ 3.753, LFX 68Hz
    • Tonality (Preference) Score is 4.37 with an EQ and would be 6.53 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.54, LW 0.535, SP 0.602, PIR 0.558; SM: SP0.876, PIR0.807; LFQ 2.789, LFX 46Hz
  • Note: Data provided by JBL in GLL format is highly variable, beware. It ranges from excellent to surprising.
JBL C211
AutomaticEQ (IIR)
Set preamp gain to: -3.1dB.
Type Freq Q Gain
3 54.0 0.61 3.0
3 560.0 2.96 2.99
3 1532.0 3.0 3.0
3 1954.0 3.0 -4.37
3 4495.0 1.8 -3.57
3 11882.0 2.98 -3.9
3 16239.0 0.69 2.93
Download

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

JBL C211 filters_auto_eq

AutomaticEQ

JBL C211 filters_eq_full

Target v.s. EQ

JBL C211
Graphic EQ 15 bands
Set preamp gain to: -0.8dB.
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 0.25
3 250.0 2.14 -0.25
3 400.0 2.14 0.0
3 630.0 2.14 0.75
3 1000.0 2.14 0.0
3 1600.0 2.14 0.25
3 2500.0 2.14 0.0
3 4000.0 2.14 0.0
3 6300.0 2.14 0.0
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 C211
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
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 0.5
3 63.0 4.32 0.5
3 80.0 4.32 0.5
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 -0.5
3 315.0 4.32 0.0
3 400.0 4.32 0.0
3 500.0 4.32 0.5
3 630.0 4.32 0.5
3 800.0 4.32 0.0
3 1000.0 4.32 -0.25
3 1250.0 4.32 0.0
3 1600.0 4.32 0.0
3 2000.0 4.32 -0.75
3 2500.0 4.32 0.0
3 3150.0 4.32 0.0
3 4000.0 4.32 -0.25
3 5000.0 4.32 -0.25
3 6300.0 4.32 0.0
3 8000.0 4.32 0.0
3 10000.0 4.32 0.25
3 12000.0 4.32 0.0
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 C211: comparison between EQs
JBL C211

Comparison betweens various EQs

JBL C211

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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