What we know about the measurement:

Triangle Borea BR03 is a passive bookshelves that cost around 500 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 .
  • Sensitivity: 87.2dB (avg. 100Hz-1kHz for 2.83V estimated at 1m)
  • -3dB (resp. -6db) point v.s. reference is at 58.2Hz (resp. 50.9Hz).
  • Reference level is normalised to -0.0dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.8dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-60.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-20.0°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.42 and would be 5.77 with a perfect subwoofer.
      • Details: NBD: ON 0.593, LW 0.55, SP 0.424, PIR 0.442; SM: SP0.803, PIR0.384; LFQ 0.984, LFX 50Hz
    • Tonality (Preference) Score is 5.96 with an EQ and would be 8.05 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.384, LW 0.351, SP 0.323, PIR 0.286; SM: SP0.949, PIR0.94; LFQ 0.856, LFX 44Hz
  • Link to original Review: eac review. Links to other reviews: yt review .
  • Vendor specifications:
    • Sensitivity 90 dB
    • Impedance 4.2 Ohm
    • Size
      • Width 206mm
      • Height 380mm
      • Depth 314 mm)
    • Weight 6.26 kg
Triangle Borea BR03
AutomaticEQ (IIR)
Set preamp gain to: -2.8dB.
Type Freq Q Gain
3 42.0 1.22 2.99
3 95.0 1.69 -1.82
3 739.0 0.53 3.0
3 765.0 2.03 -4.51
3 2245.0 1.07 -2.96
3 2862.0 2.99 2.98
3 11476.0 0.88 -4.53
Download

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

Triangle Borea BR03 filters_auto_eq

AutomaticEQ

Triangle Borea BR03 filters_eq_full

Target v.s. EQ

Triangle Borea BR03
AutomaticEQ LW (IIR)
Set preamp gain to: -2.4dB.
Type Freq Q Gain
3 56.0 2.89 3.0
3 92.0 1.31 -1.77
3 424.0 0.75 1.8
3 765.0 2.08 -2.69
3 1202.0 2.99 2.5
3 1700.0 1.91 -1.42
3 11476.0 1.46 -3.68
Download

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

Triangle Borea BR03
Graphic EQ 15 bands
Set preamp gain to: -0.6dB.
Type Freq Q Gain
3 25.0 2.14 0.5
3 40.0 2.14 0.5
3 63.0 2.14 0.25
3 100.0 2.14 -0.25
3 160.0 2.14 -0.25
3 250.0 2.14 0.0
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 0.0
3 2500.0 2.14 0.0
3 4000.0 2.14 -0.25
3 6300.0 2.14 -0.5
3 10000.0 2.14 -0.5
3 16000.0 2.14 -0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Triangle Borea BR03
Graphic EQ 31 bands
Set preamp gain to: -0.7dB.
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 0.25
3 80.0 4.32 0.0
3 100.0 4.32 -0.25
3 125.0 4.32 -0.25
3 160.0 4.32 -0.25
3 200.0 4.32 0.0
3 250.0 4.32 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.0
3 500.0 4.32 0.0
3 630.0 4.32 -0.25
3 800.0 4.32 -0.25
3 1000.0 4.32 0.0
3 1250.0 4.32 0.0
3 1600.0 4.32 0.0
3 2000.0 4.32 0.0
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 -0.5
3 8000.0 4.32 -0.5
3 10000.0 4.32 -0.5
3 12000.0 4.32 -0.5
3 16000.0 4.32 -0.25
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Triangle Borea BR03: comparison between EQs
Triangle Borea BR03

Comparison betweens various EQs

Triangle Borea BR03

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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