What we know about the measurement:

Seeburg K20 is a passive liveportable that cost around 4300 USD for a pair.

  • Quality of the measurement data is medium.
  • Origin of the data is Seeburg.
  • Format of the data is a GLL file .
  • -3dB (resp. -6db) point v.s. reference is at 95.0Hz (resp. 87.5Hz).
  • Reference level is normalised to 0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.5dB over the same frequency range.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 2.2 and would be 5.67 with a perfect subwoofer.
      • Details: NBD: ON 0.562, LW 0.445, SP 0.476, PIR 0.44; SM: SP0.733, PIR0.306; LFQ 3.055, LFX 92Hz
    • Tonality (Preference) Score is 4.62 with an EQ and would be 7.82 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.395, LW 0.301, SP 0.441, PIR 0.33; SM: SP0.934, PIR0.91; LFQ 3.055, LFX 79Hz
Seeburg K20
AutomaticEQ (IIR)
Set preamp gain to: -2.0dB.
Type Freq Q Gain
LS 342.0 0.75 1.69
PK 565.0 1.56 1.88
PK 2302.0 2.76 1.76
PK 2721.0 2.47 -2.6
PK 3325.0 2.96 2.58
PK 3930.0 2.53 -1.91
PK 4966.0 0.36 -0.95
PK 8199.0 2.66 -2.75
PK 13997.0 1.08 -1.12
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This EQ optimise the Harman score and is a good start for far field listening like in your living room.
Seeburg K20
Graphic EQ 15 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
PK 25.0 2.14 0.75
PK 40.0 2.14 0.75
PK 63.0 2.14 0.75
PK 100.0 2.14 0.75
PK 160.0 2.14 0.5
PK 250.0 2.14 0.75
PK 400.0 2.14 0.75
PK 630.0 2.14 0.75
PK 1000.0 2.14 0.5
PK 1600.0 2.14 0.5
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 0.0
PK 16000.0 2.14 0.75
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This EQ is designed for a 15 bands graphical EQ.
Seeburg K20
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 0.5
PK 100.0 4.32 0.5
PK 125.0 4.32 0.5
PK 160.0 4.32 0.25
PK 200.0 4.32 0.25
PK 250.0 4.32 0.5
PK 315.0 4.32 0.25
PK 400.0 4.32 0.5
PK 500.0 4.32 0.5
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 0.25
PK 1600.0 4.32 0.25
PK 2000.0 4.32 0.0
PK 2500.0 4.32 0.0
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 -0.25
PK 8000.0 4.32 -0.5
PK 10000.0 4.32 -0.25
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)
Seeburg K20: comparison between EQs
AutomaticEQ
Target v.s. EQ
Comparison betweens various EQs
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