Yamaha Speaker System Advanced Yst And Qd Bass Subwoofers Users Manual SW800/320 Cat.(U/C)

Advanced YST and QD-Bass Subwoofers to the manual 5d45a85a-0cb8-476a-8289-96023920dddb

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The Dramatically Different

Subwoofers

YST-SW800/YST-SW320

Advanced YST and QD-Bass Subwoofers.

High Power and Superb Bass Clarity.

Yamaha has a tradition of excellence in creating fine

sound that goes back more than a century to when

we made our first reed organs. Today, we combine

extensive expertise in both sound production (musical

instruments) and reproduction (audio and acoustics),

making us uniquely capable of creating innovative

products to enrich people’s lives.

As the world’s leading musical instrument

manufacturer, we use our acoustic craftsmanship to

develop a wide range of superior products. Our wide-

ranging capabilities, including woodworking and

metallurgical expertise, are put to good use in the

creation of audio speakers.

Having established our preeminence in the

audio field with legendary products like the NS-1000M

monitor speakers, we are now further expanding

home entertainment possibilities with an exciting new

range of products, of which the YST-SW800 and

YST-SW320 Subwoofers are outstanding examples.

The Latest Advance in the

Audio Reproduction Excell

The Dramatically D

Yamaha Tradition of

ence.

Subwoofers for the

Digital Era

Now that audio and video have largely

moved to digital formats, the demands on

speaker systems are greater than ever.

The latest home theater systems, in

particular, not only use high-performance

DVD players, but also exploit the merits of

advanced sound processing formats like

Dolby Digital and DTS Digital Surround.

Full audio enjoyment of these digital

sources requires deep, clear bass

response. This is especially true with 5.1

(6.1)-channel sound, because the sixth

channel is dedicated to the bass

frequencies. That means you not only

need a subwoofer, but a subwoofer

capable of handling extremely low

frequencies and high power levels, as well

as accurately reproducing the high quality

digital sound. Your best choice? The

YST-SW800 and YST-SW320 Subwoofers.

YST-SW800 YST-SW320

fferent Subwoofers

The YST-SW800 and YST-SW320 use

Yamaha’s Advanced YST, as well as brand

new technologies such as QD-Bass to

deliver exceptionally crisp, clean, powerful

bass. They have extremely efficient, high-

power amplifiers built in, and use extra-

long stroke, drivers that provide

outstanding power with low distortion. The

YST-SW800 also introduces new power

supply technology and a driver featuring a

Dual-Bias system with a 100mm (4")

diameter voice coil for the ultimate in power

and performance. But whichever Yamaha

subwoofer you choose, you’ll get dynamic

bass that will bring out the full potential of

your digital music and movie sources.

QD-Bass Technology

QD-Bass (Quatre Dispersion Bass)

technology uses down-firing drivers with

square, pyramid-shaped reflective plates to

radiate the sound efficiently in four

horizontal directions. The reflective plates

(not used in competitors’ down-firing

subwoofers) negate any effects caused by

the floor surface and reduce resonance

between sound waves reflected from the

floor and the unit. Also, most other systems

use circular cones, but by radiating in four

directions to avoid the legs of the cabinet,

QD-Bass reduces turbulence caused by

reflection from the legs. Changing the

height of the square pyramid varies the

acoustic load, permitting relatively simple

Innovative Design and Technology

Impressive Subwoofer Performance.

Extra-Long Stroke

Drivers

Extra-long stroke, pure

spruce multi-range

drivers provide

outstanding power with

low distortion.

High Power

Amplifier

The YST-SW800

amplifier is

extremely efficient

and features an

entirely new type of

power supply with

superior load

characteristics,

minimal noise,

higher efficiency

and greater stability.

QD-Bass

Technology

QD-Bass (Quatre

Dispersion Bass)

technology uses down-

firing drivers with square,

pyramid-shaped reflective

plates to radiate the

sound efficiently in four

horizontal directions.

25mm (1") MDF Cabinet

The beautifully finished cabinet uses

ultra-thick (25mm; 1") medium

density fiberboard for minimum

resonance.

Advanced YST

A unique system in which the speaker

and amplifier work together to cancel out

impedance so the speaker unit has a

perfectly linear motion.

QD-Bass Technology

Results in Truly

high-cut adjustment and improved

bandpass properties.

The QD-Bass system provides

extraordinary power and smooth frequency

response from an extremely compact unit. It

also allows greater freedom of placement,

since the sound radiates with equal

effectiveness in all directions.

High-Efficiency Power Amplifier

and Power Supply

The YST-SW800 and YST-SW320 deliver

high power outputs at deep bass levels,

with excellent stability and low power

consumption, even with their compact

cabinets. This is made possible by highly

efficient power amplifier technology and, in

the YST-SW800, a new power supply.

The power amplifier achieves superior

conversion efficiency by supplying

maximum power (minimizing power loss)

from the power transistors according to the

output level. It delivers stable power output

with high efficiency while minimizing power

consumption and heat production. It does

not require an output filter coil, resulting in

extremely low noise and distortion. High

speed transient response is also excellent.

The YST-SW800 also uses a new power

supply that features superior load

characteristics, minimal noise, higher

efficiency and greater stability. Switching

power supplies, commonly used in audio

and other consumer products, are small

and efficient, but suffer from noise

problems, requiring additional components

to solve. This power supply, however, holds

the voltage and current levels to zero while

the device turns on and off. This reduces

noise to 1/30 of conventional switching

power supplies. Power loss during

switching is also reduced, enabling an

incredibly high power conversion

efficiency. Other advantages of this power

supply include superb stability against

power load fluctuations, large capacity,

low impedance and silent operation.

Extra-Long Stroke,

Pure Spruce Dual-Bias Drivers

These new drivers provide outstanding

power with low distortion and are superior

to conventional drivers for a number of

reasons. Due to the use of a vertically

aligned, dual magnetic circuit structure

with 100mm (4") diameter voice coils, they

are able to handle extremely high input

power in a compact unit, with low radial

distortion. Additionally, the vertically

symmetrical gap magnetic flux density

distribution reduces secondary

(asymmetrical) distortion.

Double spider construction also aids in

handling high bass inputs without cone

deformation. And the strong diecast frame

firmly anchors the entire body including the

magnetic circuit, guaranteeing a structure

that will not fail under powerful forces.

Advanced YST

Advanced Yamaha Active Servo

Technology (Advanced YST) is a unique

system in which the speaker and amplifier

work together to cancel out impedance so

the speaker unit has a perfectly linear

motion. Advanced YST helps to ensure the

highest levels of sound pressure and

overall performance.

Extra-Long Stroke Driver Construction

Dust Cap

High-Strength

25cm (10") Spruce Cone Long Excursion Surround

High-Linearity

Suspension with

Double Spiders 100mm (3/8") ⭋

Voice Coil

Heavy-Duty

Aluminum

Diecast Frame

Dual-Bias

Magnet System

Top Plate

Yoke

Ferrite Magnets

Conventional SystemDual-Bias System

Space-Saving Voice Coil (Voice Coil: 100mm (4") )

Main Magnet

Main Magnet Shielding Magnet

N

S

N

S

N

S

N

S

N

S

N

S

Voice Coil Voice Coil

100mm (4")

WideSlim

100mm (4")

Efficient Power Amplifier and Power Supply

YST-SW800 Rear Panel

YST-SW800 Extra-Long Stroke

Five Ways to Enjoy the Power and

of Yamaha Bass.

Subwoofers YST-SW800 YST-SW320 YST-SW160 YST-SW90 YST-SW45

Advanced Yamaha Active Servo Technology Yes (Advanced YST) Yes (Advanced YST) Yes (Advanced YST) Yes (Advanced YST) Yes (Advanced YST)

QD-Bass (Quatre Dispersion Bass) Technology Yes Yes

High-Efficiency Power Amplifier Yes Yes

High-Efficiency Power Supply Yes

Drivers 25cm (10") multi-range, 25cm (10") multi-range,

Dual 20cm (8") multi-range

20cm (8") multi-range 20cm (8") multi-range

extra-long stroke design extra-long stroke design

with dual-bias system

Magnetic Shielding Yes Yes Yes Yes Yes

High Cut Filter (Continuously Variable Control) 40–140 Hz 40–140 Hz 40–140 Hz 50–150 Hz 50–150 Hz

Phase Control (Normal or Reverse) Yes Yes Yes Yes

Auto Standby Yes Yes Yes Yes Yes

BASS (Bass Action Selector System) Yes Yes Yes

Two Input Connections (Speaker or Line Level) Yes Yes Yes Yes Yes

2-Way Binding-Post Speaker Terminals Yes Yes Yes Yes Yes

Output Power 1,000 W 250 W 150 W 100 W 70 W

Frequency Response 18–160 Hz (–10 dB) 20–160 Hz (–10 dB) 20–160 Hz (–10 dB) 23–170 Hz (–10 dB) 30–200 Hz (–10 dB)

Dimensions (W x H x D) 390 x 482 x 420 mm 340 x 432 x 370 mm 235 x 602 x 463 mm 235 x 485 x 409 mm 235 x 365 x 318 mm

15-3/8" x 19" x 16-9/16" 13-3/8" x 17" x 14-9/16" 9-1/4" x 23-11/16" x 18-1/4" 9-1/4" x 19-1/8" x 16-1/8" 9-1/4" x 14-3/8" x 12-1/2"

Weight 24 kg; 52.9 lbs. 17 kg; 37.5 lbs. 20 kg; 44.9 lbs. 14 kg; 30.9 lbs. 9 kg; 19.8 lbs.

YST-SW800

Digital Pro Series Subwoofer

This subwoofer is the best that Yamaha

has to offer. New design, new

technology, and a new dimension of

power bass performance. Featuring

QD-Bass technology and Advanced YST,

it also introduces a new Dual-Bias driver

and a new power supply. Experience

bass down to 18Hz with up to 1,000W

of power: awesome!

YST-SW320

Digital Pro Series Subwoofer

Another powerful demonstration of the

advantages of QD-Bass technology. The

YST-SW320 disperses 250W of pure bass

power in four directions from its down-

firing drivers. The 25cm (10”) driver has

an extra-long stroke design for greater

stability and durability. Advanced YST

adds to the outstanding performance.

Precision

YST-SW160

Digital Home Theater Subwoofer

With dual 20cm (8") drivers,

Advanced YST and a 150W high

power amplifier, this subwoofer is

capable of delivering a powerful

punch. There’s a BASS (Bass Action

Selection System) mode for automatic

adjustment of frequency response,

Phase Control, Auto Standby and a

High Cut Filter.

YST-SW90

Digital Home Theater Subwoofer

An all-discrete 100W high power

amplifier and the highly efficient

Advanced YST system give this

subwoofer exceptional performance

capabilities. A Continuously Variable

High Cut Filter ensures best matching

with room conditions and other

speakers. Plus Auto Standby and more

in a slim design.

YST-SW45

Digital Home Theater Subwoofer

Using the Advanced YST system to

deliver deep bass with 70 watts of

power from a compact body, the

YST-SW45 provides tremendous

value. It also offers useful features like

Continuously Variable High Cut Filter,

Auto Standby and Two-Way Input. A

great choice for anyone considering a

dual subwoofer system.

Conventional speaker

Speaker + YST Subwoofer

Increased bass reproduction capability

20 50 100 20,000 (Hz )

(dB)

90

80

70

deep bass tones, the Advanced YST system

includes a negative output impedance

amplifier. By precisely matching it to the

Helmholtz system, the combined amp-

speaker impedance become zero. This

enables the compact cabinet to reproduce

bass frequencies with close to perfectly flat

response. You’re assured of getting the

highest levels of sound pressure and overall

performance.

Advanced Yamaha Active Servo Technology

(Advanced YST) combines the excellent

imaging and point source characteristics of

small speakers with the superb bass response

of large ones. The key to its success is a

Helmholtz resonator—a small port in the

speaker cabinet. The cabinet volume and port

size are scaled to an exact ratio, which causes

small amplitude input signals to be magnified

without distortion. And because zero speaker

impedance results in the best reproduction of

To fully optimize bass performance in a high-

end system, two subwoofers are

recommended.

A-1087UEN

Visit us at our website: http://www.yamaha.co.jp/

YAMAHA CORPORATION

P.O. Box 1, Hamamatsu, Japan

For details please contact:

10009D Printed in Japan

"d-cinema" is the slogan of Yamaha A/V products and technology, reflecting our focus on digital technology and our leadership in

creating and refining digital home theater.