Yamaha DXS15 mkll Handmatig - Pagina 4

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The Power of "D"

Our development team took full advantage of a number of advanced digital technologies, both

new and refined, based on Yamaha's extensive experience accumulated over many long years of

developing professional audio equipment. Everything from the detailed management of

crossover, EQ and time alignment to the limiter settings, protection functions and precise

dynamic control of the sound, was subjected to endless simulation, in-house and field testing to

ensure that these speakers produce the highest level of sound quality at the highest output

levels possible. Combined with Yamaha's advanced analog signal processing and acoustic

technologies, the "Power of "D" delivers ultimate performance.

The Power of "D"

Ultra-Precise 48Bit DSP Processing

for High Definition Sound

All full-range models feature Yamaha's proprietary FIR-X tuning™ utilizing linear phase FIR* filters for the crossover. FIR-X tuning™ simultaneously

optimizes frequency and phase response while adjusting the time alignment between the HF and LF transducers. This creates a very smooth response

around the crossover point, providing much better clarity and imaging than what is possible with conventional crossovers.

All signals are precisely processed by a 48bit (76bit accumulator) high-performance processor for high-definition sound quality. All full-range models and

DXS subwoofers employ high-precision 24bit discrete A/D and D/A converters with superior S/N ratio and dynamic range.

*Finite impulse response

Phase Response Comparison

Conventional crossover

180°

135°

90°

45°

0°

-45°

-90°

-135°

-180°

100

200

500

10k

20k Hz

100

200

Intelligent Dynamic Control

for Consistent Clarity at Any Output Level

D-CONTOUR is an intelligent multi-band compressor that gives you

powerful and consistent sound throughout all output levels. By constantly

monitoring the output of multiple frequency bands and calculating the

optimum EQ adjustments for each, even at maximum SPL levels, the DXR

Series maintains outstanding clarity and musicality.

With the DXR Series, D-CONTOUR provides a more detailed tuning of your

sound with two different settings: FOH/ MAIN mode or MONITOR mode.

FOH/MAIN mode boosts low-frequency to compensate for low-end that is

typically missing when speakers are used in suspended applications or

mounted on a speaker stand. MONITOR mode is completely optimized for

floor monitor application by intelligently taming down the low-frequency that builds up due to floor reflection, smoothing out a wide range of frequency

bands to give you stunning clarity for monitoring your sound. Both of these presets were perfected by performing countless listening tests with skilled

sound engineers, giving you a multi-band compressor that performs dynamically, delivering consistent sound with minimal distortion at any output level.

Extensive DSP Protection Functions for Maximum Output

In a typical system comprising passive loudspeakers, power amps and signal processors, trying to set optimal parameters for each component can be a

daunting task. One of the advantages of active loudspeakers is that the combination of transducers and amps can be perfectly optimized. During the

development of the DSR, DXR and DXS Series, we measured and tested the durability of each transducer and the overall amp output through countless

indoor and outdoor listening tests. Based on the test results, we were able to set the optimal limiter point for each model using precise DSP control.

In addition to the optimal limiting, DSR, DXR and DXS speakers employ many of the same protection functions used in our top-class TXn Series

professional power amplifiers. A microprocessor and high-power DSP monitor the status of the power supply, power amplifiers, transducers and ongoing

signals to protect all aspects of each component. As a result, these speakers can perform to their full potential while ensuring reliable operation in even

the most severe conditions.

*The DSR118W is protected by an analog circuit.

PROTECTION LOGIC

ON/OFF

OUTPUT

TEMP.

DC-FAULT

MUTE

VOLTAGE

OUTPUT

CURRENT

VOLTAGE

CPU / DSP

POWER AMPLIFIERS

TRANSDUCERS

AMP(HF)

LIMITER

MUTE

POWER SUPPLY

LIMITER

MUTE

AMP(LF)

LIMIT

PROTECTION

User Interface

500

10k

20k Hz

Frequecy Response of DXR12

Frequency Response of DXR12 in Floor Monitor Position

D-CONTOUR FOH/MAIN

D-CONTOUR OFF

-10

-20

-30

100

500

10k

20k

100

FREQUENCY (Hz)

DC-FAULT

INTEGRAL

OUTPUT

POWER

Switchable White Front LED

Each of the DSR, DXR full-range

speakers and DXS subwoofers has a

white LED behind the front grille that

illuminates when powered and varies

in brightness depending on the

amount of system limiting.

The Power of "D"

D-CONTOUR MONITOR

D-CONTOUR OFF

500

10k

20k