- Quality of the measurement data is unknown.
- Origin of the data is Yamaha.
- Format of the data is .
-
Sensitivity:
- Measured: 89.7 dB (avg. 300Hz-3kHz for 2.83V measured at 1m).
- -3dB (resp. -6db) point v.s. reference is at 195.8Hz (resp. 90.4Hz).
- Reference level is normalised to 1.1dB computed over the frequency range [300.0Hz, 5000.0Hz].
- Frequency deviation is 5.8dB over the same frequency range.
- Tonality (Preference) Score
- Tonality (Preference) Score is 1.54
and would be 4.83 with a
perfect subwoofer.
- Details: NBD: ON 0.82, LW 0.684, SP 0.498, PIR 0.582; SM: SP0.814, PIR0.404; LFQ 1.605, LFX 84Hz
- Tonality (Preference) Score is 4.65
with an EQ and would be 7.02 with a
perfect subwoofer and the same EQ.
- Details: NBD: ON 0.608, LW 0.49, SP 0.46, PIR 0.42; SM: SP0.949, PIR0.911; LFQ 1.391, LFX 51Hz
- Tonality (Preference) Score is 1.54
and would be 4.83 with a
perfect subwoofer.
- Link to Original review.
Yamaha NS-A638 is a passive bookshelves
| AutomaticEQ (IIR) | |||
| Set preamp gain to: -4.7dB. | |||
| Type | Freq | Q | Gain |
|---|---|---|---|
| PK | 52.0 | 0.85 | 2.98 |
| PK | 197.0 | 0.25 | 2.96 |
| PK | 219.0 | 2.95 | -1.06 |
| PK | 820.0 | 0.69 | -3.16 |
| PK | 2579.0 | 2.59 | 2.99 |
| PK | 2964.0 | 2.95 | -3.55 |
| PK | 4818.0 | 1.82 | -5.62 |
| Download | |||
This EQ optimise the Harman score and is a good start for far field listening like in your living room.
| Graphic EQ 15 bands | |||
| Set preamp gain to: -0.7dB. | |||
| Type | Freq | Q | Gain |
|---|---|---|---|
| PK | 25.0 | 2.14 | 0.5 |
| PK | 40.0 | 2.14 | 0.5 |
| PK | 63.0 | 2.14 | 0.5 |
| PK | 100.0 | 2.14 | 0.5 |
| PK | 160.0 | 2.14 | 0.5 |
| PK | 250.0 | 2.14 | 0.25 |
| PK | 400.0 | 2.14 | 0.5 |
| PK | 630.0 | 2.14 | 0.25 |
| PK | 1000.0 | 2.14 | -0.25 |
| PK | 1600.0 | 2.14 | 0.0 |
| PK | 2500.0 | 2.14 | 0.25 |
| PK | 4000.0 | 2.14 | -0.5 |
| PK | 6300.0 | 2.14 | 0.0 |
| PK | 10000.0 | 2.14 | 0.5 |
| PK | 16000.0 | 2.14 | 0.25 |
| Download | |||
This EQ is designed for a 15 bands graphical EQ.
| 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 | 0.5 |
| PK | 200.0 | 4.32 | 0.5 |
| PK | 250.0 | 4.32 | 0.5 |
| PK | 315.0 | 4.32 | 0.5 |
| PK | 400.0 | 4.32 | 0.5 |
| PK | 500.0 | 4.32 | 0.25 |
| PK | 630.0 | 4.32 | 0.5 |
| PK | 800.0 | 4.32 | 0.0 |
| PK | 1000.0 | 4.32 | 0.0 |
| PK | 1250.0 | 4.32 | 0.0 |
| PK | 1600.0 | 4.32 | 0.25 |
| PK | 2000.0 | 4.32 | 0.25 |
| PK | 2500.0 | 4.32 | 0.25 |
| PK | 3150.0 | 4.32 | -0.25 |
| PK | 4000.0 | 4.32 | -0.5 |
| PK | 5000.0 | 4.32 | -0.25 |
| PK | 6300.0 | 4.32 | 0.0 |
| PK | 8000.0 | 4.32 | 0.25 |
| PK | 10000.0 | 4.32 | 0.25 |
| PK | 12000.0 | 4.32 | 0.5 |
| PK | 16000.0 | 4.32 | 0.25 |
| PK | 20000.0 | 4.32 | 0.0 |
| Download | |||