Yamaha YST-SW005 소유자 매뉴얼 - 페이지 16

{카테고리_이름} Yamaha YST-SW005에 대한 소유자 매뉴얼을 온라인으로 검색하거나 PDF를 다운로드하세요. Yamaha YST-SW005 19 페이지. Yamaha subwoofer system owner's manual
Yamaha YST-SW005에 대해서도 마찬가지입니다: 소유자 매뉴얼 (20 페이지), 서비스 매뉴얼 (16 페이지), 서비스 매뉴얼 (13 페이지)

페이지 인쇄

ADVANCED YAMAHA ACTIVE SERVO TECHNOLOGY

The theory of Yamaha Active Servo Technology has been

based upon two major factors, the Helmholtz resonator and

negative-impedance drive. Active Servo Processing

speakers reproduce the bass frequencies through an "air

woofer", which is a port or opening in the speaker's cabinet.

This opening is used instead of, and performs the functions

of, a woofer in a conventionally designed speaker system.

Thus, signals of low amplitude within the cabinet can,

according to the Helmholtz resonance theory, be outputted

from this opening as waves of great amplitude if the size of

the opening and the volume of the cabinet are in the correct

proportion to satisfy a certain ratio.

In order to accomplish this, moreover, the amplitudes within

the cabinet must be both precise and of sufficient power

because these amplitudes must overcome the "load"

presented by the air that exists within the cabinet.

Thus it is this problem that is resolved through the

employment of a new design in which the amplifier supplies

special signals. If the electrical resistance of the voice coil

could be reduced to zero, the movement of the speaker unit

would become linear with respect to signal voltage. To

accomplish this, a special negative-impedance output-drive

amplifier for subtracting output impedance of the amplifier is

used.

High-amplitude

bass sound

E-

Cabinet

Port

Advanced Negative-

impedance Converter

Signals of low amplitude

By employing negative-impedance drive circuits, the

amplifier is able to generate precise, low-amplitude, low-

frequency waves with superior damping characteristics.

These waves are then radiated from the cabinet opening as

high-amplitude signals. The system can, therefore, by

employing the negative-impedance output drive amplifier

and a speaker cabinet with the Helmholtz resonator,

reproduce an extremely wide range of frequencies with

amazing sound quality and less distortion.

The features described above, then, are combined to be the

fundamental structure of the conventional Yamaha Active

Servo Technology.

Our new Active Servo Technology — Advanced Yamaha

Active Servo Technology — adopted Advanced Negative

Impedance Converter (ANIC) circuits, which allows the

conventional negative impedance converter to dynamically

vary in order to select an optimum value for speaker

impedance variation. With this new ANIC circuits, Advanced

Yamaha Active Servo Technology can provide more stable

performance and improved sound pressure compared with

the conventional Yamaha Active Servo Technology, resulting

in more natural and dynamic bass reproduction.

Air woofer

(Helmholtz resonator)

Active Servo

Processing

Amplifier

Signals