Yamaha NS-A638 is a passive bookshelves speaker .
- -3dB (resp. -6db) point v.s. reference is at 150.0Hz (resp. 90.0Hz).
- Reference level is normalised to -0.0dB computed over the frequency range [300.0Hz, 10000.0Hz].
- Frequency deviation is 5.8dB over the same frequency range.
- Preference Score is 1.8 and would be 5.1 with a perfect subwoofer.
- Score compononent details: NBD: ON 0.82, LW 0.68, SP 0.5, PIR 0.56; SM: SP0.81, PIR0.49; LFQ 1.6, LFX 83Hz
- Link to Original review.