User manual WHITES ELECTRONICS SEARS 59644

[. . . ] At the heart of the home theater--switching it all, decoding it all and reproducing all the sound--stands the A/V receiver. And this single component is challenged as never before. How do you coordinate and switch all those sources, preserving audio and video in their most pristine form?How do you pack all those channels of amplification in a single chassis and still deliver the quality and power that home theater requires? [. . . ] The four large black ICs in the middle are Sony's S-Master Pro 32-bit LSIs, the CXD9773Q. On the right, the same circuit board with heat sink in position. Again, this runs counter to previous design practices for traditional amplifiers. Typically, output transistors generate so much heat that they need to ES Receivers v1. 0 Page 13 be isolated from other circuits. On big amps, you'll usually find the output transistors bonded to heavy aluminum heat sinks somewhere at the back or sides of the chassis. Thanks to the cool running of Sony's S-Master Pro amplifier, the MOS FETs are located where the circuit topology is shortest and simplest--lined up side-by-side, right in the middle of the power amplifier circuit board. In fact, the transistors can be so close together that the STR-DA7100ES amplifier section is some 70% smaller than the DA9000ES amp section!And the board itself is located in the middle of the DA7100ES chassis. As a result, the music is less exposed to vibration, radiated hum and noise. And nothing intrudes between you and the sound. Transistor heat Transistor packing Transistor location Transistor heat radiation Heat sinks Space requirements Traditional amplifier Major design concern Widely separated Away from heat-sensitive parts From the bottom Massive radiating fins made of die cast aluminum (on the better amplifiers) Major, for high powered amplifiers Isolated, to protect other circuits from heat Circuitous, because of output transistor heat STR-DA7100ES Minor issue Close together Surface mount directly on the amplifier circuit board From the top A single sheet of metal 70% smaller than the STRDA9000ES--and far, far smaller than analog amps of comparable power Wherever it makes the most sense for the shortest possible signal paths Short, simple and straight Amplifier board location Overall chassis topology Molecular Bonding Even inside the MOS FET output transistors, Sony innovations are at work. Sony uses a new refinement of our molecular bonding technique to attach the transistor leads. In the STR-DA9000ES, the MOS FETs use "double wire molecular bonding" with two bonding wires, each rated for 15 amps of current. With so many choices for video and audio output, you may wonder whether users will be knowledgeable enough to get the best performance from their systems. Is 720p better suited to their television or 1080i?While users will have their choice from a menu of options, HDMI offers a simpler way. Component-to-component communication A system called "product unique key exchange" enables connected equipment to automatically confirm the type of component connected through HDMI. In addition, a source component (such as Sony's DVP-NS9100ES DVD player) can automatically transfer the appropriate audio and video by checking the input capabilities of product next to it (such as an HDMI equipped television or A/V receiver). In this way, the equipment can automatically choose the highest performance audio and video formats that the source and target components both have in common!Consider what happens when you connect an HDMI equipped DVD player to an HDMI equipped television. On first connection the two components exchange basic information--they "introduce themselves. " DVD player with HDMI output Hi. I'm a television. ES Receivers v1. 0 Page 17 Next, the components communicate their input/output capabilities. DVD player with HDMI output What is your input capability?Television with HDMI input I can accept 720p video and 2channel audio at 48 kHz and 16 bits. Finally, the components agree on the highest available quality options for digital audio and video--and then automatically transfer content at that quality! DVD player with HDMI output OK. Television with HDMI input Thank you We've considered just a DVD player and a television. But the dynamic changes when you insert the STR-DA7100ES into the reproduction chain. [. . . ] ES Series receivers are destined to be used in custom installations where curtains, screens and lighting "scenes" may require 12-volt triggers. Infrared repeater ports (STR-DA2100ES and higher). To accommodate installations where the stack of electronics is hidden away, ES Series receivers offer one infrared repeater input and two outputs. This means you can place an inconspicuous IR "eye" in the home theater room and still control your components. [. . . ]