What we know about the measurement:

Rogers LS3|5A is a passive bookshelves that cost around 3500 USD for a pair.

  • Quality of the measurement data is high.
  • Origin of the data is ASR.
  • Format of the data is generated by a Klippel NFS .
  • Sensitivity: 79.6dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 90.8Hz (resp. 74.7Hz).
  • Reference level is normalised to 0.4dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 4.3dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-50.0°, 50.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 1.68 and would be 4.75 with a perfect subwoofer.
      • Details: NBD: ON 0.582, LW 0.521, SP 0.521, PIR 0.493; SM: SP0.28, PIR0.0; LFQ 0.736, LFX 74Hz
    • Tonality (Preference) Score is 5.68 with an EQ and would be 8.29 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.364, LW 0.292, SP 0.292, PIR 0.232; SM: SP0.953, PIR0.954; LFQ 0.627, LFX 58Hz
  • Link to original Review: asr review. Links to other reviews: bbc review , msc review , str review , tas review .
  • Vendor specifications:
    • Sensitivity 82.5 dB
    • Impedance 15 Ohm
    • Size
      • Width 190mm
      • Height 305mm
      • Depth 165 mm)
    • Weight 4.9 kg
Rogers LS3|5A
AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
3 95.0 0.27 2.99
3 149.0 1.16 -4.93
3 910.0 0.3 3.0
3 1121.0 2.47 -5.76
3 1887.0 2.24 -2.82
3 5732.0 0.49 -4.16
3 16239.0 1.22 -1.83
Download

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

Rogers LS3|5A filters_auto_eq

AutomaticEQ

Rogers LS3|5A filters_eq_full

Target v.s. EQ

Rogers LS3|5A
AutomaticEQ LW (IIR)
Set preamp gain to: -3.3dB.
Type Freq Q Gain
3 155.0 2.99 -1.53
3 344.0 1.48 2.81
3 792.0 1.03 3.0
3 1083.0 2.47 -5.4
3 2168.0 1.22 -2.02
3 5165.0 3.0 -3.9
3 11476.0 1.83 -3.06
Download

These EQ optimise for a flat listening window and is a good start for near field listening like on your desk.

Rogers LS3|5A: comparison between EQs
Rogers LS3|5A

Comparison betweens various EQs

Rogers LS3|5A

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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