What we know about the measurement:

Rockville SPG88 is an active bookshelves that cost around 130 USD for a pair.

  • Quality of the measurement data is low.
  • Origin of the data is Misc.
  • Format of the data is .
  • -3dB (resp. -6db) point v.s. reference is at 111.5Hz (resp. 95.1Hz).
  • Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 6.1dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is -1.47 and would be 2.18 with a perfect subwoofer.
      • Details: NBD: ON 1.124, LW 0.947, SP 0.895, PIR 0.903; SM: SP0.255, PIR0.001; LFQ 1.717, LFX 102Hz
    • Tonality (Preference) Score is 2.51 with an EQ and would be 5.79 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.788, LW 0.658, SP 0.641, PIR 0.613; SM: SP0.918, PIR0.822; LFQ 1.472, LFX 83Hz
  • Link to Original review.
Rockville SPG88
AutomaticEQ (IIR)
Set preamp gain to: -3.4dB.
Type Freq Q Gain
PK 98.0 2.97 3.0
PK 235.0 2.41 2.79
PK 356.0 2.27 2.01
PK 739.0 3.0 -3.81
PK 1381.0 0.77 3.0
PK 2670.0 1.38 -5.56
PK 8397.0 1.07 -8.89
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Rockville SPG88
Graphic EQ 15 bands
Set preamp gain to: -0.7dB.
Type Freq Q Gain
PK 25.0 2.14 0.5
PK 40.0 2.14 0.5
PK 63.0 2.14 0.5
PK 100.0 2.14 0.5
PK 160.0 2.14 0.0
PK 250.0 2.14 0.5
PK 400.0 2.14 0.25
PK 630.0 2.14 -0.25
PK 1000.0 2.14 0.5
PK 1600.0 2.14 0.5
PK 2500.0 2.14 -0.75
PK 4000.0 2.14 -0.25
PK 6300.0 2.14 -0.75
PK 10000.0 2.14 -1.0
PK 16000.0 2.14 0.5
Download
This EQ is designed for a 15 bands graphical EQ.
Rockville SPG88
Graphic EQ 31 bands
Set preamp gain to: -0.4dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.25
PK 31.0 4.32 0.25
PK 40.0 4.32 0.25
PK 50.0 4.32 0.25
PK 63.0 4.32 0.25
PK 80.0 4.32 0.25
PK 100.0 4.32 0.25
PK 125.0 4.32 0.25
PK 160.0 4.32 0.0
PK 200.0 4.32 0.25
PK 250.0 4.32 0.25
PK 315.0 4.32 0.25
PK 400.0 4.32 0.25
PK 500.0 4.32 0.0
PK 630.0 4.32 -0.25
PK 800.0 4.32 -0.25
PK 1000.0 4.32 0.0
PK 1250.0 4.32 0.0
PK 1600.0 4.32 0.25
PK 2000.0 4.32 0.0
PK 2500.0 4.32 -0.5
PK 3150.0 4.32 -0.5
PK 4000.0 4.32 -0.25
PK 5000.0 4.32 -0.5
PK 6300.0 4.32 -0.5
PK 8000.0 4.32 -1.0
PK 10000.0 4.32 -1.0
PK 12000.0 4.32 -0.25
PK 16000.0 4.32 0.25
PK 20000.0 4.32 0.0
Download
This EQ is designed for a 31 bands graphical EQ.
Improvement made by adding the above EQ
EQ
AutoEQ
Target v.s. EQ
Target v.s. EQ
Histogram of errors
On Axis (fullrange)
Listening Window (fullrange)
Predicted In-Room Response (fullrange)
Rockville SPG88: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
;