What we know about the measurement:

JBL 305P Mark ii is an active bookshelves that cost around 300 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 51.3Hz (resp. 46.9Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 3.3dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.89 and would be 7.02 with a perfect subwoofer.
      • Details: NBD: ON 0.365, LW 0.323, SP 0.279, PIR 0.282; SM: SP0.805, PIR0.472; LFQ 0.45, LFX 45Hz
    • Tonality (Preference) Score is 6.47 with an EQ and would be 8.54 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.304, LW 0.24, SP 0.234, PIR 0.203; SM: SP0.979, PIR0.96; LFQ 0.45, LFX 43Hz
  • Link to original Review: eac review. Links to other reviews: asr review .
  • Vendor specifications:
    • Dispersion: 120° horizontal and 90° vertical.
    • Sensitivity 92 dB
    • SPL
      • max: 94 dB
      • peak: 108 dB
    • Size
      • Width 185mm
      • Height 298mm
      • Depth 231mm
    • Weight 4.73kg
JBL 305P Mark ii
AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
LS 51.0 1.27 2.96
PK 117.0 0.64 -0.68
PK 245.0 2.6 0.92
PK 547.0 1.18 1.75
PK 1261.0 2.27 2.07
PK 1704.0 2.7 -2.1
PK 2014.0 2.61 1.87
PK 2631.0 0.73 -0.37
PK 12246.0 0.29 -1.48
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
JBL 305P Mark ii
flipflop@ASR (IIR)
Set preamp gain to: -1.1dB.
Type Freq Q Gain
PK 343.0 10.0 0.2
PK 416.0 5.0 0.5
PK 526.0 7.5 0.9
PK 656.0 4.5 1.1
PK 790.0 6.5 -0.9
PK 1142.0 10.0 0.9
PK 1376.0 10.0 0.3
PK 1742.0 7.0 -3.1
PK 2080.0 6.0 -0.3
PK 2500.0 4.0 -1.0
PK 3300.0 3.5 -3.0
PK 4250.0 4.0 -0.9
PK 5080.0 3.3 -2.9
PK 6850.0 4.8 -2.6
PK 8000.0 10.0 1.2
PK 8700.0 4.0 -2.7
PK 10000.0 8.0 0.8
PK 10640.0 4.0 -2.2
PK 13000.0 12.0 -0.3
PK 16500.0 1.0 -5.5
Download
This EQ is designed by ASR member flipflop.
JBL 305P Mark ii
Graphic EQ 15 bands
Set preamp gain to: -0.2dB.
Type Freq Q Gain
PK 25.0 2.14 0.0
PK 40.0 2.14 0.25
PK 63.0 2.14 -0.25
PK 100.0 2.14 -0.25
PK 160.0 2.14 -0.25
PK 250.0 2.14 0.0
PK 400.0 2.14 0.0
PK 630.0 2.14 0.0
PK 1000.0 2.14 0.25
PK 1600.0 2.14 -0.25
PK 2500.0 2.14 -0.25
PK 4000.0 2.14 -0.5
PK 6300.0 2.14 -0.5
PK 10000.0 2.14 -0.75
PK 16000.0 2.14 -0.75
Download
This EQ is designed for a 15 bands graphical EQ.
JBL 305P Mark ii
Graphic EQ 31 bands
Set preamp gain to: -0.2dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.0
PK 31.0 4.32 0.0
PK 40.0 4.32 0.25
PK 50.0 4.32 0.0
PK 63.0 4.32 0.0
PK 80.0 4.32 -0.25
PK 100.0 4.32 -0.25
PK 125.0 4.32 -0.25
PK 160.0 4.32 -0.25
PK 200.0 4.32 -0.25
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 0.0
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 0.0
PK 1600.0 4.32 -0.25
PK 2000.0 4.32 -0.25
PK 2500.0 4.32 -0.25
PK 3150.0 4.32 -0.5
PK 4000.0 4.32 -0.5
PK 5000.0 4.32 -0.5
PK 6300.0 4.32 -0.5
PK 8000.0 4.32 -0.5
PK 10000.0 4.32 -0.75
PK 12000.0 4.32 -0.75
PK 16000.0 4.32 -0.75
PK 20000.0 4.32 0.0
Download
This EQ is designed for a 31 bands graphical EQ.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
JBL 305P Mark ii: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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