Käyttöohje Pioneer S-4EX-QL Kaiutin

Käyttöohje

4

En

About the EX series

The EX series, incorporating the abundant technological know-how behind Pioneer’s flagship TAD speaker series, was developed

with the goal of creating the ultimate speaker possible in its price range.

The design and production of the EX series result from an international effort that represents the finest in Pioneer’s speaker technology.

Technology behind the S-4EX

CST

The core driver of the system is the Coherent Source Transducer

(CST), which draws on the technology used in TAD. The tweeter

diaphragm is mounted concentrically within the apex of the

midrange cone and provides a point source of sound from 400 Hz

to 100 kHz. The CST ensures a perfect spectral balance between

the direct and reflected sounds that arrive at the listener’s ears,

providing a more consistent sound throughout the listening room

and improved imaging capability.

Ceramic Graphite Diaphragm

The CST’s tweeter features a ceramic graphite diaphragm that

provides top-level strength and dampening characteristics that

are practically unrivaled by any other available materials currently

used in high-end audio speaker systems. Ceramic graphite’s

lightness and exceptional strength combine to create speakers

whose diaphragm resonance can be pushed far beyond their

audible range.

Magnesium Alloy Diaphragm

The CST’s midrange features a magnesium alloy diaphragm

whose characteristic lightness and high inner loss provide

excellent transience and minimal coloration of midrange sounds.

Bass Drivers

The bass driver pictured below serves as the foundation of the

S-4EX speaker system. The driver’s strength is the result of the

Aramid/Carbon composite material, originally created during the

development of the S-1EX, that is used in its diaphragm. Pioneer’s

exclusive LDMC magnetic circuit technology has been

incorporated in order to preserve linearity from low to high output

levels and minimize distortion.

Bass Enclosure Construction

The unique form of the S-4EX is based upon logical necessity. In

order to synchronize the arrival time of sound from the CST and

the bass driver, each driver is mounted upon a baffle that serves

to create a highly delicate curve known as the “precision curve”

(see illustration below). Made of up to 65 mm thick MDF (Medium

Density Fiberboard), this baffle is, moreover, strong enough to

contain the force of the drivers. Additionally, the bass port has

been carved out of an extremely thick block of MDF, resulting in

the reduction of wind noise for clear, deep bass.

Crossover Networks

The crossover networks use only the finest components. Air cored

coils, noninductive resistors, and film capacitors in the signal path

are all carefully chosen and optimized for the CST driver to provide

the greatest transparency to the signal. The bass drivers use

silicon steel plate core inductors that minimize distortion and loss

during energy transfer. All components are connected directly to

their respective wiring materials, instead of a printed circuit-

board, allowing for minimal loss and maximum performance.

Collaboration with Air Studios

Since its establishment by George Martin in 1969, London,

England’s Air Studios has earned unequivocal respect from

scores of artists who recognize it as the world’s premier recording

studio. The Air Studios seal that was awarded to the S-4EX

indicates that these speakers are capable of producing the high-

quality sound demanded by the world’s top-class sound creators.

18 000

Velocity (m/s)

Inner Loss

16 000

14 000

12 000

10 000

8 000

6 000

4 000

2 000

0.005 0.015 0.025

0

Precision curve

3 m

1 m

S-4EX_EN.book 4 ページ ２００８年７月１６日　水曜日　午後２時２分

Arviointi

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