What we know about the measurement:
XTZ Spirit 4 is a passive bookshelves that cost around 477 USD for a pair.
- Quality of the measurement data is low.
- Origin of the data is Misc.
- Format of the data is a set of 36 horizontal and 36 vertical measurements .
- Sensitivity: 79.1dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
- -3dB (resp. -6db) point v.s. reference is at 49.7Hz (resp. 44.9Hz).
- Reference level is normalised to -0.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
- Frequency deviation is 2.4dB over the same frequency range.
- Directivity
- Horizontal directivity is (-60.0°, 60.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Vertical directivity is (-20.0°, 20.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Tonality (Preference) Score
- Tonality (Preference) Score is 4.41
and would be 6.53 with a
perfect subwoofer.
- Details: NBD: ON 0.627, LW 0.537, SP 0.455, PIR 0.466; SM: SP0.89, PIR0.778; LFQ 0.886, LFX 44Hz
- Tonality (Preference) Score is 5.98
with an EQ and would be 7.93 with a
perfect subwoofer and the same EQ.
- Details: NBD: ON 0.408, LW 0.319, SP 0.291, PIR 0.263; SM: SP0.94, PIR0.886; LFQ 0.886, LFX 41Hz
- Tonality (Preference) Score is 4.41
and would be 6.53 with a
perfect subwoofer.
- Link to original Review: asr review. .
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Vendor specifications:
- Sensitivity 86 dB
- Impedance 4 Ohm
- Size
- Width 190mm
- Height 350mm
- Depth 270 mm)
- Weight 8.1 kg