Find out what the home-theater fuss is all about: hook your DVD player into a surround-capable audio/video receiver and Yamaha's NS-P436 multichannel speaker system and prepare to be enthralled by seamless, full-range surround sound. The NS-P436 is a 6.1-channel system offering front left/right, surround left/right, and a rear-center satellite/bookshelf speaker, a front center-channel speaker, and a 120-watt powered subwoofer, model YST-SW015. The system requires a 6.1-channel receiver for full enjoyment. If you're already set up for 5.1 sound (without the rear center-channel output), don't sweat it--you'll still get terrific performance (and you can always store one of the system's five satellite speakers for later on).
The satellites and the center-channel speaker all use acoustic-suspension designs with dual 2-inch drivers and a coaxial .5-inch tweeter mounted on one of the drivers. All are capable of handling amplifier power up to 100 watts (30 watts nominal power), and the complete system is finished in piano black for great looks as well as great sound.
The powered sub packs the most "under the hood," so to speak, with Yamaha's patented Advanced Active Servo Technology (Advanced YST) generating incredible bass from its small enclosure. Advanced YST uses negative-impedance feedback in the amp and a Helmholtz resonator in the speaker to provide strong and accurate bass.
QD-Bass (Quatre Dispersion Bass) technology uses a down-firing driver with square, pyramid-shaped reflective plates to radiate sound efficiently in four horizontal directions. The reflective plates (not used in other brands' down-firing subwoofers) negate any effects caused by the floor surface and reduce resonance between sound waves reflected from the floor and the unit. Most other systems use circular cones, but the YST-SW015, by radiating in four directions, avoids firing sound into the legs of the cabinet. Changing the height of the pyramid varies the acoustic load, permitting relatively simple high-cut adjustment and improving bandpass properties. QD-Bass also grants greater freedom of placement, since the sound radiates with equal effectiveness in all directions.
The user-adjustable, variable high-cut filter sets the highest frequency the subwoofer will deliver. It can be set anywhere from 50 to 150 Hz. For instance, if the filter is set at 75 Hz, only frequencies 75 Hz or below will be delivered by the subwoofer. This allows the sub's output to be matched to the lowest reproducible frequency of the other speakers in the system and the room's acoustics for a seamless presentation.
The rotary volume control permits the perfect matching of the sub's output to the overall volume of the system. The YST-SW015 has a signal-sensing circuit, too. When the subwoofer detects an audio signal, it turns its power on. When it senses no signal for several minutes, it shuts itself off.
Yamaha's BASS (Bass Action Selector Switch) tailors the sub's output for video or music at the touch of a switch. The sub accepts a line-level RCA input only, and a handy phase normal/reverse switch makes it easy to phase the subwoofer with the other speakers in the system (room placement greatly affects phase relationships).
What's in the Box
Five satellite speakers, a center-channel speaker, a subwoofer, all requisite cabling (including an RCA subwoofer interconnect), four non-skid subwoofer pads, and a user's manual.