What we know about the measurement:
Yamaha NS-18 is a passive bookshelves
- 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: 81.5dB (avg. 100Hz-1kHz for 2.83V measured at 1m).
- -3dB (resp. -6db) point v.s. reference is at 40.0Hz (resp. 30.4Hz).
- Reference level is normalised to 0.3dB computed over the frequency range [300.0Hz, 5000.0Hz].
- Frequency deviation is 16.1dB over the same frequency range.
- Directivity
- Horizontal directivity is (-10.0°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Vertical directivity is (-10.0°, 10.0°) between 1kHz and 10kHz. Angle computed for +/-6dB.
- Tonality (Preference) Score
- Tonality (Preference) Score is 0.26
and would be 1.56 with a
perfect subwoofer.
- Details: NBD: ON 1.522, LW 1.108, SP 0.841, PIR 0.891; SM: SP0.411, PIR0.145; LFQ 0.802, LFX 29Hz
- Tonality (Preference) Score is 3.46
with an EQ and would be 4.14 with a
perfect subwoofer and the same EQ.
- Details: NBD: ON 1.317, LW 0.898, SP 0.634, PIR 0.69; SM: SP0.864, PIR0.778; LFQ 0.802, LFX 20Hz
- Tonality (Preference) Score is 0.26
and would be 1.56 with a
perfect subwoofer.
- Link to original Review: asr review. .
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Vendor specifications:
- Impedance 8 Ohm
- Size
- Width 540mm
- Height 720mm
- Depth 250mm
- Weight 18.0kg
