What we know about the measurement:

Seeburg X2 is a passive liveportable that cost around 2200 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 .
  • Sensitivity: 107.1dB (avg. 100Hz-1kHz for 2.83V estimated at 1m) . Sensitivity computed at the measurement distance (10m) over the same frequency range: 87.1dB.
  • -3dB (resp. -6db) point v.s. reference is at 90.0Hz (resp. 80.0Hz).
  • Reference level is normalised to 0.2dB computed over the frequency range [300.0Hz, 5000.0Hz].
  • Frequency deviation is 2.9dB over the same frequency range.
  • Directivity
    • Horizontal directivity is (-40.0°, 40.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
    • Vertical directivity is (-30.0°, 30.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
  • Tonality (Preference) Score
    • Tonality (Preference) Score is 3.44 and would be 6.7 with a perfect subwoofer.
      • Details: NBD: ON 0.461, LW 0.466, SP 0.519, PIR 0.462; SM: SP0.839, PIR0.669; LFQ 1.742, LFX 82Hz
    • Tonality (Preference) Score is 4.74 with an EQ and would be 7.88 with a perfect subwoofer and the same EQ.
      • Details: NBD: ON 0.375, LW 0.326, SP 0.421, PIR 0.346; SM: SP0.96, PIR0.932; LFQ 1.742, LFX 77Hz
Seeburg X2
AutomaticEQ (IIR)
Set preamp gain to: -1.5dB.
Type Freq Q Gain
5 175.0 1.22 2.88
3 604.0 1.18 2.81
3 790.0 2.66 -1.67
3 998.0 1.53 1.97
3 1491.0 2.7 0.89
3 3801.0 1.35 1.39
3 4966.0 2.8 -2.59
3 11454.0 2.96 -2.44
5 13537.0 0.61 -1.4
Download

These EQ optimise the Harman score and is a good start for far field listening like in your living room.

Seeburg X2 filters_auto_eq

AutomaticEQ

Seeburg X2 filters_eq_full

Target v.s. EQ

Seeburg X2
Graphic EQ 15 bands
Set preamp gain to: -1.1dB.
Type Freq Q Gain
3 25.0 2.14 0.75
3 40.0 2.14 0.75
3 63.0 2.14 0.75
3 100.0 2.14 0.25
3 160.0 2.14 0.25
3 250.0 2.14 0.0
3 400.0 2.14 0.25
3 630.0 2.14 0.25
3 1000.0 2.14 0.5
3 1600.0 2.14 0.25
3 2500.0 2.14 0.0
3 4000.0 2.14 0.25
3 6300.0 2.14 -0.25
3 10000.0 2.14 0.0
3 16000.0 2.14 0.25
Download

These EQ is designed for a 15 bands graphical EQ.

Seeburg X2
Graphic EQ 31 bands
Set preamp gain to: -1.2dB.
Type Freq Q Gain
3 20.0 4.32 0.0
3 25.0 4.32 0.75
3 31.0 4.32 0.75
3 40.0 4.32 0.75
3 50.0 4.32 0.75
3 63.0 4.32 0.75
3 80.0 4.32 0.75
3 100.0 4.32 0.25
3 125.0 4.32 0.25
3 160.0 4.32 0.25
3 200.0 4.32 -0.25
3 250.0 4.32 0.0
3 315.0 4.32 0.0
3 400.0 4.32 0.25
3 500.0 4.32 0.25
3 630.0 4.32 0.25
3 800.0 4.32 0.25
3 1000.0 4.32 0.5
3 1250.0 4.32 0.5
3 1600.0 4.32 0.25
3 2000.0 4.32 0.0
3 2500.0 4.32 0.0
3 3150.0 4.32 0.25
3 4000.0 4.32 0.25
3 5000.0 4.32 -0.5
3 6300.0 4.32 0.0
3 8000.0 4.32 0.0
3 10000.0 4.32 0.0
3 12000.0 4.32 -0.25
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.

Seeburg X2: comparison between EQs
Seeburg X2

Comparison betweens various EQs

Seeburg X2

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
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