What we know about the measurement:

JBL LSR305 is an active bookshelves

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is .
  • -3dB (resp. -6db) point v.s. reference is at 48.3Hz (resp. 44.9Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.6dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 6.0 and would be 8.14 with a perfect subwoofer.
      • Details: NBD: ON 0.339, LW 0.281, SP 0.27, PIR 0.248; SM: SP0.962, PIR0.883; LFQ 1.005, LFX 45Hz
    • Tonality (Preference) Score is 6.45 with an EQ and would be 8.32 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.315, LW 0.251, SP 0.33, PIR 0.252; SM: SP0.965, PIR0.941; LFQ 1.005, LFX 39Hz
  • Link to Original review.
JBL LSR305
AutomaticEQ (IIR)
Set preamp gain to: -8.3dB.
Type Freq Q Gain
PK 56.0 1.0 2.97
PK 99.0 0.25 2.96
PK 138.0 1.67 -2.47
PK 262.0 1.08 -2.83
PK 691.0 2.05 -1.78
PK 1491.0 1.35 -1.48
PK 3216.0 0.55 -2.4
PK 8478.0 0.7 -2.78
LS 14473.0 1.0 2.98
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

JBL LSR305 filters_auto_eq

AutomaticEQ

JBL LSR305 filters_eq_full

Target v.s. EQ

JBL LSR305
Graphic EQ 15 bands
Set preamp gain to: -0.9dB.
Type Freq Q Gain
PK 25.0 2.14 0.75
PK 40.0 2.14 0.75
PK 63.0 2.14 0.0
PK 100.0 2.14 0.25
PK 160.0 2.14 0.0
PK 250.0 2.14 -0.25
PK 400.0 2.14 0.25
PK 630.0 2.14 0.0
PK 1000.0 2.14 0.0
PK 1600.0 2.14 0.25
PK 2500.0 2.14 0.0
PK 4000.0 2.14 0.0
PK 6300.0 2.14 0.0
PK 10000.0 2.14 0.25
PK 16000.0 2.14 -0.25
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These EQ is designed for a 15 bands graphical EQ.

JBL LSR305
Graphic EQ 31 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.75
PK 31.0 4.32 0.75
PK 40.0 4.32 0.75
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 0.25
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 -0.25
PK 315.0 4.32 0.0
PK 400.0 4.32 0.25
PK 500.0 4.32 0.0
PK 630.0 4.32 0.0
PK 800.0 4.32 0.0
PK 1000.0 4.32 0.0
PK 1250.0 4.32 -0.25
PK 1600.0 4.32 0.25
PK 2000.0 4.32 0.0
PK 2500.0 4.32 0.0
PK 3150.0 4.32 0.0
PK 4000.0 4.32 0.0
PK 5000.0 4.32 0.0
PK 6300.0 4.32 0.0
PK 8000.0 4.32 0.25
PK 10000.0 4.32 0.25
PK 12000.0 4.32 0.25
PK 16000.0 4.32 -0.25
PK 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

JBL LSR305: comparison between EQs
JBL LSR305

Comparison betweens various EQs

JBL LSR305

Improvements made by EQ

Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
Frequency Frequency with EQ
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