Yamaha DSP-3000 Bedienungsanleitung PDF herunterladen (Seite 3)

When speakers are connected in parallel, oen the case with subwoofers or line

arrays, stability at lower impedance becomes extremely important. e actual

impedance curve of a speaker unit is complex and its load varies greatly

depending on frequency. e actual impedance of a speaker is oen lower than

its nominal impedance under certain frequencies, putting excessive stress on

the amplier especially if multiple speakers are connected in parallel. e TXn

series are designed to perform with ease even under demanding low impedance

conditions, always maintaining top quality performance. Some of the many

renements implemented to provide stable low-impedance drive capability

include newly developed thin-lm power transistors and at-wire power

transformer windings to minimize heat loss. Many other details contribute, but

the nal result is totally stable drive capability down to two ohms.

Input Attenuator (0.5 dB steps)

Gain/Sensitivity (0.1 dB steps)

Input Type:

• Card Slot

(AES/EBU, EtherSound*, CobraNet*, Analog*)

* Optional MY card required.

Signal redundancy:

• Card slot with analog backup

• Card slot with analog override

Amplifier Mode: • Stereo •Bridge • Parallel

Input Mixer

Attenuator Link and Limits

Selectable Metering

Always maintaining headroom - Stable operation at 2 ohms

On top of the outstanding basic performance oered by the TXn series power

amps, they are equipped with some of the most advanced and exible DSP

(Digital Signal Processing) capabilities available. Yamaha is an acknowledged

leader in the eld of digital signal processing, and the full weight of that

technology has been brought to bear in these cutting-edge power ampliers. All

three TXn models incorporate advanced 24 -bit 96-kHz DSP capability that

employs Yamaha’s own DSP7 LSI (the same LSI that provides the processing

power for Yamaha’s industry-standard digital mixing consoles) as well as

powerful SHARC processing technology. In addition to outstanding sound quality

and low latency, an extraordinary selection of control and processing

capabilities are provided, ranging from basic amplier settings through input

and speaker processing to comprehensive status monitoring. e built-in input

and speaker processing capabilities are so extensive and powerful, in fact, that

external processors will be unnecessary in many applications. e onboard DSP

parameters and functions can be accessed directly through the LCD and button

interface provided on the front panel of the amplier, or via Yamaha's

Amp Editor soware running on a computer connected via

Ethernet. Amp Editor control provides additional advantages and

capabilities for controlling large systems that employ numerous ampliers

(Amp Editor is discussed in more detail on the following page).

Versatile Onboard DSP

e chart below lists most of the monitoring, control, and processing functions

provided by the TXn series ampliers. Unless otherwise noted these functions

can be accessed directly via the amplier’s own display and controls. e

Amp Editor soware described on the following page oers more

comprehensive displays and easier control, as well as centralized management

of entire multi-amplier systems.

DSP Features and Functions

e TXn ampliers feature a dual mono conguration: the mono ampliers

are arranged symmetrically on each side of the chassis, each with its own

independent power supply. is conguration eectively eliminates

performance-degrading interference between channels while maintaining

optimum separation and superior denition under all operating conditions

and with all types of source material. Sudden high power demands in one

channel will not aect the performance of the other, for

example. e two

power supplies operate in opposing phases to cancel noise while minimizing

electromagnetic interference.

Dual-mono Configuration with Independent Power Supplies

Original Yamaha EEEngine technology reduces power consumption by

approximately 50% compared to conventional ampliers while maintaining

full Class AB reproduction quality and fast response. Power mains quality and

capacity become signicant issues in large-scale live sound systems, but the

ability of the TXn series ampliers to deliver high power output with

dramatically reduced power consumption goes a long way towards alleviating

the problem. In addition to less susceptibility to imperfect mains supplies,

lower power consumption also achieves reduced heat generation, signicantly

increasing part life and reliability. In order to achieve stable 2-ohm drive

capability the EEEngine circuitry in the TXn series ampliers features a newly

developed high-eciency FET current buer drive circuit. Only Yamaha can

deliver this level of high eciency and stability with low-impedance loads.

EEEngine Efficiency

Ampliﬁer Control & Settings

Level, Mute

Polarity

Crossover (LPF/HPF):

• 6 dB/Oct • Adjustable Fc Gain* • Bessel*

• Butterworth* • Linkwitz-Riley

Delay:

Up to 500 milliseconds in 0.01

millisecond increments (1 sample, 0.1 meter, or

0.1 feet steps selectable via Amp Editor).

EQ (6 Bands per Output Channel):

• PEQ • Low/High Shelving (6 or 12 dB/Oct)

• All Pass (for phase matching) • Horn EQ

Limiter

Speaker Library:

• Yamaha speaker libraries pre-installed

• Other libraries can be loaded as required

• Edit security provided

12, 18, 24, 36, or 48 dB/Oct

Speaker Processing

Switchable Clip Limiter

Voltage Limiter

Power Limiter

Overheat Limiter

Low Impedance/Short Circuit Mute

(1-sec. reset)

Output DC Mute

VHF Limiter

Current Limiter

DSP/CPU-based Protection

Password Lockout of Display and

Mute Button

Security

Input Card Routing

Mute

Polarity

Level

4-in/4-out Matrix Mixer

Polarity

(8 Bands per Input Channel)

• 6-band Parametric EQ

• 2-band Selectable EQ (PEQ, Low/High Shelving, LPF/HPF)

Delay:

Up to 1300 milliseconds in 0.01 millisecond increments

(1 sample,

0.1 meter, or 0.1 feet steps selectable via Amp Editor).

Oscillator: • Pink Noise • Burst Noise

• Variable Frequency Sine Wave

Polarity

4-in/2-out Matrix Mixer

Input Routing and Processing

TX6n internal layout

Ethernet device

Class AB power amplifier

EEEngine high speed voltage buffer

EEEngine high speed current buffer

MY card slot

200V primary capacitor

DSP7+SharcDSP

Precision current sensor(load monitor)

Transformer

250V secondary capacitor

LCD 0.5dB step attenuator

: Mono Amp x 2 = Dual Mono Amp structure

Superlative Power Performance Combined

with Cutting-edge DSP and Unrivalled Flexibility

Amp Editor Screen view

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