What we know about the measurement:

Bose 141 is a passive bookshelves

  • Quality of the measurement data is unknown.
  • Origin of the data is Bose.
  • Format of the data is .
  • Sensitivity: 83.1dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • -3dB (resp. -6db) point v.s. reference is at 88.5Hz (resp. 74.4Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 5.9dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is -0.75 and would be 2.33 with a perfect subwoofer.
      • Details: NBD: ON 1.193, LW 1.002, SP 0.918, PIR 0.913; SM: SP0.526, PIR0.153; LFQ 0.823, LFX 75Hz
    • Tonality (Preference) Score is 2.84 with an EQ and would be 5.47 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.884, LW 0.677, SP 0.644, PIR 0.595; SM: SP0.895, PIR0.762; LFQ 0.627, LFX 59Hz
Bose 141
AutomaticEQ (IIR)
Set preamp gain to: -2.3dB.
Type Freq Q Gain
3 121.0 1.3 -3.0
3 378.0 0.25 3.0
3 668.0 2.08 -2.61
3 844.0 2.99 -2.99
3 1948.0 1.37 -2.95
3 2813.0 2.05 -2.94
3 4064.0 2.96 2.98
3 9691.0 2.96 -2.99
3 11454.0 1.04 -2.97
Download

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

Bose 141 filters_auto_eq

AutomaticEQ

Bose 141 filters_eq_full

Target v.s. EQ

Bose 141
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 -0.25
3 160.0 2.14 0.0
3 250.0 2.14 0.25
3 400.0 2.14 0.0
3 630.0 2.14 -0.25
3 1000.0 2.14 0.0
3 1600.0 2.14 -0.25
3 2500.0 2.14 -0.75
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.25
3 10000.0 2.14 -1.5
3 16000.0 2.14 -0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Bose 141
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 -0.25
3 160.0 4.32 0.0
3 200.0 4.32 0.25
3 250.0 4.32 0.5
3 315.0 4.32 0.5
3 400.0 4.32 0.25
3 500.0 4.32 0.0
3 630.0 4.32 -0.25
3 800.0 4.32 -0.5
3 1000.0 4.32 0.0
3 1250.0 4.32 -0.25
3 1600.0 4.32 -0.25
3 2000.0 4.32 -0.5
3 2500.0 4.32 -0.5
3 3150.0 4.32 -0.5
3 4000.0 4.32 0.25
3 5000.0 4.32 -0.25
3 6300.0 4.32 0.25
3 8000.0 4.32 0.0
3 10000.0 4.32 -1.25
3 12000.0 4.32 0.0
3 16000.0 4.32 0.0
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Bose 141: comparison between EQs
Bose 141

Comparison betweens various EQs

Bose 141

Improvements made by EQ

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