What we know about the measurement:

Ascend Acoustics CMT-340 SE2 is a passive bookshelves that cost around 350 USD each.

  • Quality of the measurement data is high.
  • Origin of the data is Ascend Acoustics.
  • Format of the data is a set of 36 horizontal and 36 vertical measurements .
  • -3dB (resp. -6db) point v.s. reference is at 77.6Hz (resp. 64.5Hz).
  • Reference level is normalised to -0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.2dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 5.52 and would be 8.18 with a perfect subwoofer.
      • Details: NBD: ON 0.326, LW 0.26, SP 0.335, PIR 0.267; SM: SP0.906, PIR0.909; LFQ 0.981, LFX 60Hz
    • Tonality (Preference) Score is 6.32 with an EQ and would be 8.45 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.279, LW 0.212, SP 0.314, PIR 0.229; SM: SP0.909, PIR0.93; LFQ 0.986, LFX 45Hz
Ascend Acoustics CMT-340 SE2
AutomaticEQ (IIR)
Set preamp gain to: -4.8dB.
Type Freq Q Gain
LS 77.0 0.35 2.98
PK 77.0 0.4 2.98
PK 106.0 1.77 -2.72
PK 143.0 1.41 -2.2
PK 447.0 0.55 -0.55
PK 511.0 2.48 1.63
PK 739.0 1.94 -0.73
PK 1594.0 0.55 0.82
PK 9691.0 0.63 0.41
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This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Ascend Acoustics CMT-340 SE2
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 0.0
PK 160.0 2.14 -0.25
PK 250.0 2.14 0.0
PK 400.0 2.14 0.25
PK 630.0 2.14 0.25
PK 1000.0 2.14 0.25
PK 1600.0 2.14 0.25
PK 2500.0 2.14 0.25
PK 4000.0 2.14 0.0
PK 6300.0 2.14 0.0
PK 10000.0 2.14 0.25
PK 16000.0 2.14 0.5
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This EQ is designed for a 15 bands graphical EQ.
Ascend Acoustics CMT-340 SE2
Graphic EQ 31 bands
Set preamp gain to: -0.8dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.5
PK 31.0 4.32 0.5
PK 40.0 4.32 0.5
PK 50.0 4.32 0.5
PK 63.0 4.32 0.5
PK 80.0 4.32 0.25
PK 100.0 4.32 0.0
PK 125.0 4.32 -0.25
PK 160.0 4.32 -0.25
PK 200.0 4.32 0.0
PK 250.0 4.32 0.0
PK 315.0 4.32 0.0
PK 400.0 4.32 0.25
PK 500.0 4.32 0.25
PK 630.0 4.32 0.25
PK 800.0 4.32 0.25
PK 1000.0 4.32 0.25
PK 1250.0 4.32 0.25
PK 1600.0 4.32 0.25
PK 2000.0 4.32 0.25
PK 2500.0 4.32 0.25
PK 3150.0 4.32 0.0
PK 4000.0 4.32 0.0
PK 5000.0 4.32 0.0
PK 6300.0 4.32 0.0
PK 8000.0 4.32 0.25
PK 10000.0 4.32 0.25
PK 12000.0 4.32 0.25
PK 16000.0 4.32 0.5
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)
Ascend Acoustics CMT-340 SE2: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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