What we know about the measurement:

Amazon Basic R60BTUS is an active bookshelves that cost around 50 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 .
  • -3dB (resp. -6db) point v.s. reference is at 139.2Hz (resp. 51.3Hz).
  • Reference level is normalised to 0.0dB 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 (-10.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.09 and would be 5.23 with a perfect subwoofer.
      • Details: NBD: ON 0.754, LW 0.664, SP 0.507, PIR 0.529; SM: SP0.794, PIR0.437; LFQ 0.332, LFX 45Hz
    • Tonality (Preference) Score is 5.09 with an EQ and would be 6.97 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.593, LW 0.532, SP 0.422, PIR 0.414; SM: SP0.945, PIR0.864; LFQ 0.332, LFX 39Hz
  • Link to Original review.
Amazon Basic R60BTUS
AutomaticEQ (IIR)
Set preamp gain to: -4.8dB.
Type Freq Q Gain
5 139.0 0.83 2.96
3 139.0 0.37 2.88
3 187.0 1.88 -1.55
3 366.0 0.45 -1.03
3 668.0 2.95 2.79
3 1348.0 2.96 -2.96
3 1648.0 2.91 2.3
3 6276.0 2.91 -2.94
3 7669.0 1.26 2.21
Download

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

Amazon Basic R60BTUS filters_auto_eq

AutomaticEQ

Amazon Basic R60BTUS filters_eq_full

Target v.s. EQ

Amazon Basic R60BTUS
Graphic EQ 15 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 25.0 2.14 0.75
3 40.0 2.14 0.75
3 63.0 2.14 0.75
3 100.0 2.14 0.75
3 160.0 2.14 0.5
3 250.0 2.14 0.25
3 400.0 2.14 0.0
3 630.0 2.14 0.5
3 1000.0 2.14 -0.25
3 1600.0 2.14 0.25
3 2500.0 2.14 0.0
3 4000.0 2.14 0.0
3 6300.0 2.14 -0.5
3 10000.0 2.14 0.0
3 16000.0 2.14 -0.5
Download

These EQ is designed for a 15 bands graphical EQ.

Amazon Basic R60BTUS
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 0.5
3 125.0 4.32 0.5
3 160.0 4.32 0.25
3 200.0 4.32 0.25
3 250.0 4.32 0.25
3 315.0 4.32 -0.25
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 -0.25
3 1250.0 4.32 -0.5
3 1600.0 4.32 0.0
3 2000.0 4.32 -0.25
3 2500.0 4.32 0.0
3 3150.0 4.32 0.0
3 4000.0 4.32 0.0
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 0.0
3 12000.0 4.32 -0.25
3 16000.0 4.32 -0.5
3 20000.0 4.32 0.0
Download

These EQ is designed for a 31 bands graphical EQ.

Amazon Basic R60BTUS: comparison between EQs
Amazon Basic R60BTUS

Comparison betweens various EQs

Amazon Basic R60BTUS

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
;