Yamaha NS-555 Specification
| System type | 3-way |
| Enclosure type | Bass-reflex |
| Frequency response ± 3dB | 35 - 35000 Hz |
| Nominal impedance | 6 Ohm |
| Amplifier Requirements | 15 - 100 W |
| Sensitivity (2.83V/1m) | 88 dB |
| Tweeter | 25 mm (1 in.) |
| Midrange | 130 mm (5 in.) |
| Woofer | 2 x 160 mm (6.5 in.) |
| Dimensions (H x W x D) | 980 x 222 x 345 mm / 38.58 x 8.74 x 13.58 in. |
| Weight | 20 kg / 44 lbs. |
