What we know about the measurement:

Spendor Audio Systems SA1 is a passive bookshelves

  • Quality of the measurement data is low.
  • Origin of the data is Princeton.
  • Format of the data is .
  • Sensitivity: 85.8dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.7dB 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°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is -1.91 and would be 4.74 with a perfect subwoofer.
      • Details: NBD: ON 0.669, LW 0.566, SP 0.689, PIR 0.614; SM: SP0.302, PIR0.246; LFQ 10.0, LFX 509Hz
    • Tonality (Preference) Score is -0.57 with an EQ and would be 6.08 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.572, LW 0.48, SP 0.536, PIR 0.468; SM: SP0.659, PIR0.53; LFQ 10.0, LFX 509Hz
  • Link to Original review.
Spendor Audio Systems SA1
AutomaticEQ (IIR)
Set preamp gain to: -0.0dB.
Type Freq Q Gain
3 24.0 0.35 -6.55
3 40.0 0.54 -8.35
3 58.0 0.26 -8.52
3 299.0 1.23 -0.18
3 522.0 0.96 1.07
3 7308.0 1.64 -5.48
3 9648.0 2.59 0.58
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These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Spendor Audio Systems SA1 filters_auto_eq

AutomaticEQ

Spendor Audio Systems SA1 filters_eq_full

Target v.s. EQ

Spendor Audio Systems SA1
Graphic EQ 15 bands
Set preamp gain to: -0.3dB.
Type Freq Q Gain
3 25.0 2.14 0.0
3 40.0 2.14 0.0
3 63.0 2.14 0.0
3 100.0 2.14 0.0
3 160.0 2.14 0.0
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 0.25
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 -0.25
3 16000.0 2.14 0.0
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These EQ is designed for a 15 bands graphical EQ.

Spendor Audio Systems SA1
Graphic EQ 31 bands
Set preamp gain to: -0.4dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.0
3 31.0 4.32 0.0
3 40.0 4.32 0.0
3 50.0 4.32 0.0
3 63.0 4.32 0.0
3 80.0 4.32 0.0
3 100.0 4.32 0.0
3 125.0 4.32 0.0
3 160.0 4.32 0.0
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 0.25
3 1250.0 4.32 0.25
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 0.0
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 -0.25
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.

Spendor Audio Systems SA1: comparison between EQs
Spendor Audio Systems SA1

Comparison betweens various EQs

Spendor Audio Systems SA1

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
Frequency Frequency with EQ
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