What we know about the measurement:

ATC SCM19 v1 is a passive bookshelves that cost around 4000 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 120.1Hz (resp. 55.7Hz).
  • Reference level is normalised to -0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.6dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 4.55 and would be 6.97 with a perfect subwoofer.
      • Details: NBD: ON 0.386, LW 0.347, SP 0.327, PIR 0.305; SM: SP0.751, PIR0.502; LFQ 1.078, LFX 52Hz
    • Tonality (Preference) Score is 6.73 with an EQ and would be 8.54 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.293, LW 0.237, SP 0.258, PIR 0.21; SM: SP0.952, PIR0.955; LFQ 0.942, LFX 38Hz
  • Link to Original review.
ATC SCM19 v1
AutomaticEQ (IIR)
Set preamp gain to: -5.2dB.
Type Freq Q Gain
LS 120.0 1.04 2.74
PK 207.0 1.87 0.47
PK 646.0 2.98 -2.75
PK 1032.0 1.39 -2.8
PK 3438.0 2.57 -2.32
PK 4966.0 2.89 -2.45
LS 16000.0 1.29 2.43
Download
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
ATC SCM19 v1
flipflop@ASR (IIR)
Set preamp gain to: -1.9dB.
Type Freq Q Gain
PK 325.0 10.0 -1.0
PK 345.0 4.0 1.2
PK 408.0 7.0 -1.4
PK 482.0 30.0 1.6
PK 541.0 8.0 -0.5
PK 603.0 5.0 -1.9
PK 675.0 5.0 -1.7
PK 945.0 1.372 -3.3
PK 985.0 10.0 -0.5
PK 1131.0 10.0 0.7
PK 1265.0 20.0 -0.6
PK 1580.0 20.0 -0.8
PK 1820.0 15.0 -0.5
PK 2800.0 7.0 -0.4
PK 3137.0 1.001 -1.5
PK 4200.0 10.0 0.7
PK 5020.0 5.0 -0.7
PK 6180.0 7.0 1.0
PK 7460.0 5.0 2.1
PK 12250.0 5.0 1.5
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This EQ is designed by ASR member flipflop.
ATC SCM19 v1
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 0.5
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 -0.25
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 0.25
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.
ATC SCM19 v1
Graphic EQ 31 bands
Set preamp gain to: -1.2dB.
Type Freq Q Gain
PK 20.0 4.32 0.0
PK 25.0 4.32 0.75
PK 31.0 4.32 0.75
PK 40.0 4.32 0.75
PK 50.0 4.32 0.75
PK 63.0 4.32 0.75
PK 80.0 4.32 0.75
PK 100.0 4.32 0.75
PK 125.0 4.32 0.75
PK 160.0 4.32 0.75
PK 200.0 4.32 0.75
PK 250.0 4.32 0.5
PK 315.0 4.32 0.5
PK 400.0 4.32 0.25
PK 500.0 4.32 0.25
PK 630.0 4.32 -0.5
PK 800.0 4.32 -0.25
PK 1000.0 4.32 -0.25
PK 1250.0 4.32 0.0
PK 1600.0 4.32 0.0
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 0.25
PK 5000.0 4.32 0.25
PK 6300.0 4.32 0.75
PK 8000.0 4.32 0.75
PK 10000.0 4.32 0.5
PK 12000.0 4.32 0.75
PK 16000.0 4.32 1.0
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)
ATC SCM19 v1: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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