Yamaha XMV4280 4-Channel 1120W Power Amplifier

High Impedance, Low Impedance, or Both

Installed sound applications often demand both high- and low-impedance connectivity in the same venue, requiring separate, dedicated amplifiers or an external transformer. XMV power amplifiers, however, can operate in both high-impedance (70/100V line) or low-impedance (4-/8-ohm) modes simultaneously, eliminating the need for additional equipment as well as streamlining the installation process.

XMV power amplifiers also enable both 70 and 100V operation for every pair of channels by simply selecting the preferred mode using the dip switches on the rear panel. High-impedance operation often requires the use of two combined channels in bridge mode, but with XMV amplifiers, 70 or 100V mode can be assigned to every pair of channels without affecting the number of available output channels.

Double Power Mode

The newly developed Double Power Mode function effectively doubles the output power of selected channels in order to drive speakers with higher output power. This means that speakers with varying output capacities can be powered simultaneously by the same amplifier, adding flexibility to system design and configuration.

Note: the number of channels that can be used will be reduced to half.

Yamaha Proprietary YDIF Digital Audio Protocol

Non-Dante XMV amplifiers come equipped with the newly developed YDIF digital audio format. YDIF allows easy setup with the use of Ethernet cables while Dante models can be used for larger venues where long distant cabling is required. YDIF can transmit up to 16 channels of audio and word clock via RJ45 Cat 5 cabling.

Note: this amplifier can receive four channels of YDIF audio.

A Perfect Match for the MTX Series

When XMV power amplifiers are used in systems with MTX/MRX series processors, settings such as the mute on/off or attenuator changes can be set via computer using the MTX-MRX Editor software application. YDIF ports make system configuration simple and fast with instant connectivity and flexible parameter control.

Efficient and Reliable Installation Amplifier

XMV amplifiers feature an innovative new patent-pending circuit that improves the already highly efficient Class-D circuit topology, bringing the efficiency level of the amplifier's output stage up to over 90%. This is achieved by automatically switching the circuit to match the corresponding output voltage. In high-impedance connections, both 70 and 100V operation can be achieved since the circuit is already capable of operating in high voltages.

However, using the same circuit in low-impedance operation can mean excessive energy loss, so by automatically switching to a lower voltage drive, efficiency is improved significantly without sacrificing crucial aspects of the amp's performance, such as keeping the distortion levels to a minimum. XMV power amplifiers also feature a new switching power supply equipped with Power Factor Correction, which ensures harmonic control and decreases the amount of current draw dramatically, yet still maintains the same output power. This makes circuit breakers less prone to shutting down as well as eliminating the need for thicker, heavier cables or a larger, more powerful system.

Robust Protection Features

Automatic protection functions are an essential part of the XMV Series' design, ensuring peak performance and reliable operation in less than ideal situations. Low-load impedance, overcurrent, and overheating can all damage vital amplifier components and threaten their ability to function effectively. To combat these hazards, XMV Series power amps feature powerful, intelligent protection functions that can deliver the assurance of long product life and consistent performance.

Source Selection

Originally, the input source of the XMV series was common to all channels. From Version 3.1, it is now possible to individually select input sources for each channel. It is also possible to mix digital connections and analog connections for each input channel of an XMV.

Redundant Functions

The XMV series has two types of redundant functions, Backup and Override mode, to match the situation:

• Backup mode: XMV can detect an incoming pilot tone from the digital input and automatically switch to the analog input when the pilot tone is interrupted due to a problem from the input device. In addition, if and when the original input source is recovered, it will be able to return automatically to the digital input.
• Override mode: When voice input from the analog input is detected, it is possible to switch input sources for a channel without interrupting to the sound. This is ideal for providing a backup signal for applications such as emergency broadcasts and announcements.

Key Specs

Amplifier

Performance

Signal Processing

Connectivity

Power

Physical