The NS-SW901 derives its bass thrust from a built-in 600 W digital amplifier. Featuring Yamaha’s exclusive Power Engine chipset, it uses a constant gain PLL modulator circuit, a cross feedback loop circuit, an Active Power Control system, a highly efficient power supply and the highest quality parts. It delivers exceptionally high levels of power and sound quality, yet with low power consumption and compact size. The 25 cm (10”) cone diaphragm is made of Yamaha developed F.B.P., which is paper with a blend of carbon fibers and aramid fibers. Its extreme stiffness and extra-long stroke prevent distortion from occurring even during large, deep bursts of sound.
Front Firing Design
The front firing design ensures extremely fast response and attack, and is especially suited to the accurate reproduction of music.
Twin Wooden Linear Ports
The wooden ports are carved from a block of alder wood and aesthetically match the enclosure, the twin ports provide more port area without increasing the subwoofer’s size, as one large port would do. The shape is based on a natural logarithm to prevent extraneous wind noise.
- Advanced YST II (Yamaha Active Servo Technology II)
- 25cm (10”) F.B.P. (Fiber Blend Paper) diaphragm with diecast aluminium frame
- 600W high performance digital amplifier built in
- Twin wooden Linear Ports
- Heavy-duty construction
- Three Bass Modes (wide, normal and narrow)
- Three memory presets
- Continuously variable high cut filter
- Full-function remote control unit
- Sleep timer