多媒体
| 阻抗 |
6 Ω |
| 信号-噪声比(信噪比) |
100 dB |
| Tweeter diameter |
25 mm |
| Woofer diameter |
130 mm |
| 频率范围 |
55 - 28000 Hz |
| 总谐波失真 |
0.04% |
| 卡拉 OK |
N |
端口 & 界面
| HDMI端口数量 |
1 |
| 与苹果产品对接兼容性 |
iPod, iPhone |
| AUX 输入 |
Y |
| 耳机输出端口 |
1 |
| 超重低音输出 |
Y |
设计
| 光盘 (CD) 播放器 |
Y |
| 类型 |
Home audio micro system |
| 录音机 |
N |
性能
| 播放光盘格式 |
CD video, CD audio |
| 视频录制 |
Y |
| 集成读卡器 |
N |
| 支持的视频格式 |
JPG |
| MP3播放 |
Y |
| 光盘类型支持 |
CD, DVD |
其他功能
| 音箱宽度 |
176 mm |
| 音箱高度 |
318 mm |
| 音箱深度 |
305 mm |
130W RMS, DVD/CD, 100dB, 55-28000Hz, USB 2.0, HDMI, 17.1kg, Silver/Piano Black
<b>Outstanding audio performance from a high quality Micro Component System composed of Receiver, DVD Player and two Speakers.</b>
<b>Superb Audio Performance</b>
The MCR-840 offers superb audio performance via the small units of a micro component system. This was made possible by developing entirely new circuit designs, DVD Disc Player mechanism and many of the parts. Its advanced technologies include one-point earth, short signal routing, electronic volume control and Pure Direct. The speakers are also extremely high quality and feature Yamaha's elegant piano finish.
<b>A New Approach to Achieving High Performance</b>
In order to achieve truly high quality audio performance in a micro component, our technicians had to rethink circuit layouts and parts positioning, in effect compressing a full size receiver into a much smaller unit. They were able to achieve this with a design that features short signal paths, high thermal efficiency and excellent anti-noise and anti-vibration characteristics.
<b>Top-Class Analogue Amplifier</b>
Using discrete parts for all major components, this exceptionally high performance analogue amplifier delivers Yamaha's traditional high analogue sound quality. The aluminium-extruded heat sink is large enough to effectively dissipate heat.
<b>Advanced Electronic Volume Control</b>
The R-840 employs an advanced electronic volume control circuit. The audio analogue element does not transmit the audio signal, but instead is used in a rotary potentiometre, with the results processed through a microcomputer to the electronic volume. The benefits of this system are that it eliminates the static prone to occur found in analogue controls as well as gang error, and provides higher precision volume control.
<b>One-Point Earth and Short Signal Routing</b>
Rather than each section having its own earth, which can lower S/N ratio due to common impedance, the earth is located in one position, extending out to each section (power amp, power supply, preamp, motor drive and digital circuitry). In addition, signal paths are painstakingly laid out to be as short as possible, greatly reducing the chance of electromagnetic interference.
<b>Pure Direct for Highest Sound Quality</b>
Pure Direct results in the highest possible sound quality by turning off the display and causing the audio signal to bypass all non-essential circuits so it travels the shortest possible path from input to output. Pressing the button engages Pure Direct for both the receiver and DVD Player.
<b>iPod Direct Docking on the Top Panel</b>
A universal iPod dock is on the top of the receiver. When the receiver is in standby mode and you insert your iPod while it is playing, the
receiver turns on and you can enjoy your music with enhanced power and clarity. A Play/Pause button is also provided. You can operate the iPod from the system remote, and the iPod charges while in use.
<b>High Sound Quality Reproduction</b>
It requires exceptionally high design expertise to achieve an internal parts layout and signal path that ensure the highest possible sound quality in the restricted space of a micro component. We realised this with a disc loader installed at the bottom of the chassis to minimise vibration and a high efficiency power supply. In some places components are linked directly rather than via wires, and where wires are used they are short and even thicker than those normally used, preventing the occurrence of electrical noise.
