JVC RX-D702 Technical Manual
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JVC RX-D702 Technical Manual

High-power 7.1 power 7.1-channel a/v control receiver
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  • Page 1 < 1 >...
  • Page 2 Superior Sound, Pictures, and Style. Superior Sound, Pictures, and Style. JVC now offers the latest-generation of AV control receivers -- RX-D702, RX-D402, and RX-D401 -- which feature a sleek profile to complement today’s and future home cinema systems. But what gears the units for the future home cinema is not only the stylish design.
  • Page 3 High-Quality Pictures -- Advanced Technologies that Even Permit HDMI Compatibility PC Link -- USB Connection for Receiving Uncompressed PCM Data from CC Converter -- A JVC-Original Technology for Superior Sound Aureus™ -- High-Performance DSP for Superior Sound Quality Hybrid Feedback Digital Amplifier Ver.III -- An Upgraded Version of JVC-Trademark Digital Amp for Unmatched Sound Quality <...
  • Page 4 High-Quality Pictures HDMI HDMI The JVC A/V receivers deliver not only superior sound, but also superb pictures with HDMI -- The Next-Generation Digital Interface a host of advanced technologies. The units feature HDMI terminals and use of DCDi by HDMI -- Easy Connections for All-Digital Transmission FAROUDJA.

  • Page 5: Hdmi -- The Next-Generation Digital Interface

    HDMI HDMI HDMI -- The Next-Generation Digital Interface HDMI -- The Next-Generation Digital Interface RX-D702 RX-D402 *Also applies to RX-D401 HDMI (High-Definition Multimedia Interface) -- An Industry-Supported, Digital Audio/Video Interface Developed for Next-Generation Home AV Devices. Its remarkable benefits include: 1.

  • Page 6: Hdmi -- Easy Connections For All-Digital Transmission

    HDMI HDMI HDMI -- Easy Connections for All-Digital Transmission HDMI -- Easy Connections for All-Digital Transmission RX-D702 RX-D402 *Also applies to RX-D401 Single-Cable Connections 5.1-ch Audio Display 2-ch Audio DVD Player 10 Audio + 9 Video Cables Receiver Component Video...
  • Page 7 DCDi DCDi by FAROUDJA by FAROUDJA Connection Example -- RX-D702 Connection Example -- RX-D702 RX-D702 DVD/VDR/D-VHS/STB Display 480i/p, 720p, 1080i 480i/p, 720p, 1080i PCM (DVD-Audio) / DD / DTS HDMI FAROUDJA DVD-Audio Speakers SPDIF Hybrid Feedback Hybrid Feedback Digital Amplifier...
  • Page 8 DCDi DCDi by FAROUDJA by FAROUDJA Connection Example -- RX-D402/D401 Connection Example -- RX-D402/D401 RX-D402 *Also applies to RX-D401 DVD/VDR/D-VHS/STB Display 480i/p, 720p, 1080i 480i/p, 720p, 1080i PCM (DVD-Audio) / DD / DTS HDMI FAROUDJA DVD-Audio Speakers SPDIF Hybrid Feedback Hybrid Feedback Digital Amplifier Digital Amplifier...

  • Page 9: What Is Dcdi By Faroudja? What Is Dcdi By Faroudja

    DCDi by FAROUDJA by FAROUDJA What is DCDi by FAROUDJA? What is DCDi by FAROUDJA? RX-D702 RX-D402 *Also applies to RX-D401 The new A/V receivers can convert video signal format to HDMI for display on a compatible monitor, whether the signals are from Composite, S-Video, or Component input.

  • Page 10: Effect Examples (1)

    DCDi DCDi by FAROUDJA by FAROUDJA VISUAL PROOF Effect Examples (1) Effect Examples (1) RX-D702 RX-D402 *Also applies to RX-D401 3D Deinterlacer Cross-Color Suppression A unique algorithm that identifies all the moving While composite signals are decoded, Jagged Edges on...

  • Page 11: Effect Examples (2)

    DCDi by FAROUDJA by FAROUDJA VISUAL PROOF Effect Examples (2) Effect Examples (2) RX-D702 RX-D402 *Also applies to RX-D401 Fleshtone Adaptive Noise Reduction Noise reduction applied on overall picture may cause an adverse effect -- unnatural flesh color. The Fleshtone Adaptive NR detects flesh color contained in a picture and controls noise reduction coefficient to deliver optimum human flesh color.

  • Page 12: Usb Connection

    PC Link -- USB Connection for Receiving Audio Signals from PC The RX-D702 permits transmission of stereo Wireless USB Connection Wireless USB Connection audio signals from your PC (MP3, WMA, Superior Sound Quality Matching CD/DVD Linear PCM, etc.) for listening via your audio system.
  • Page 13 Wireless USB Connection Wireless USB Connection Superior Sound Quality Matching CD/DVD Superior Sound Quality Matching CD/DVD RX-D702 Note PC or Desk-Top PC Max. reach is 30m, but this depends on the environment. USB Connection (1) The 2Mbps high transmission rate using the 2.4GHz band permits transmission of uncompressed signals for lossless reproduction.
  • Page 14 To ensure security, the wirelss USB transmitter and The Wireless USB additionally features “Auto Scan”, the RX-D702 share a specific “user ID”. This means which stops interruption from other signals in the same devices without the same ID cannnot receive signals room.
  • Page 15 Wireless USB Connection Wireless USB Connection Comparison of Signal Formats Comparison of Signal Formats RX-D702 Bluetooth Wifi/802.11b Compression Compression Format No Compression (due to low data rate) No Compression Data Rate 2Mbps 1Mbps 11Mbps Delay Time Approx. 400msec Under 2msec Approx.
  • Page 16 USB Connection USB Connection Transmission of Stereo Audio Signals from PC Transmission of Stereo Audio Signals from PC RX-D702 RX-D402 *Also applies to RX-D401 Note PC or Desk-Top PC USB Connection (1) Corresponds to 16-bit, 32kHz/44.1kHz/48kHz sampling rates for superior sound.

  • Page 17: Table Of Contents

    CC Converter -- A JVC-Original Technology for Superior Sound CC Converter CC Converter K2 Processing is the result of a close collaboration among JVC studio engineers, Background producers and hardware engineers, Problems with Digital Conversion embodying the elaborate algorithms for a...

  • Page 18: Background

    CC Converter Background Background RX-D702 JVC is not only a hardware maker but also a software producer as well, so there Digital audio started with has been a close collaboration between the hardware engineers and studio Compact Disc and has since engineers for all aspects of digital sound production.

  • Page 19: Problems With Digital Conversion

    Problems with Digital Conversion Problems with Digital Conversion RX-D702 In digital audio, music is processed in digital form. The music played by musicians in a recording studio or a concert hall is picked up by a microphone and recorded in digital form, to be released for sale as packaged media, including CD.

  • Page 20: Problem: An Analog Signal Of A Very Faint Strength Cannot Be

    A/D and D/A conversion. (1) accurately recreated by A/D and D/A conversion. (1) RX-D702 When its level is high, a 1kHz signal can produce a smooth waveform after the A/D and D/A conversion. When the level is low, however, a stepped waveform results due to the limitation in the resolution of a digital signal.

  • Page 21: Problem: A High-Frequency Analog Signal Cannot Be Accurately

    Problem: A high-frequency analog signal cannot be accurately recreated by A/D and D/A conversion. (2) Problem: A high-frequency analog signal cannot be accurately recreated by A/D and D/A conversion. (2) RX-D702 The “sampling theorem” says that, if the sampling frequency is more than twice as high as the maximum frequency of original signal, then the original signal can be retrieved by A/D and D/A conversion.

  • Page 22: Cc Converter

    (2) increasing the sampling frequency for high-frequency signals. Because bit expansion and oversampling alone do not guarantee better sound quality, the CC Converter features JVC’s original, advanced digital signal processing. CC Converter Block Diagram...

  • Page 23: Bit Expansion Section

    Bit Expansion Section RX-D702 In the bit expansion section, the JVC-exclusive hi-fi processing generates a high-resolution 24-bit digital signal from a 16-bit signal. The process first analyzes the 16-bit digital signal to deduce the original analog signal before A/D conversion, and then applies hi-bit expansion to smooth the signal waveform.
  • Page 24 Range Expansion Section Range Expansion Section The range expansion section applies the JVC-exclusive range expansion processing to compensate for the conversion distortion that occurs when the analog signal is converted into a digital signal.

  • Page 25: Cc Converter: How Its Workings Differ From Other High-Bit/Upsampling Systems

    Some instruments feature rich resonance, while others produce hardly any. CC Converter JVC’s CC Converter does not simply create and add harmonic Accurate D/A conversion and reproduction of the recreated components. It computes the data that was lost during the D/A data requires a process to expand the frequency range of the conversion by taking advantage of JVC’s exclusive algorithms.

  • Page 26: Comparison Of -90Db, 1Khz Sine Waves: Bit Expansion On Vs. Off

    CC Converter Comparison of -90dB, 1kHz Sine Waves: Bit Expansion On vs. Off Comparison of -90dB, 1kHz Sine Waves: Bit Expansion On vs. Off RX-D702 The figure shows the actual measured -90dB, 1kHz Sine Wave: Bit Expansion On -90dB, 1kHz Sine Wave: Bit Expansion Off waveform of a bit-expanded -90dB sinusoidal signal.

  • Page 27: D.d. Converter

    P.E.M. D.D. Converter P.E.M. D.D. Converter D.D. Converter RX-D702 RX-D402 *Also applies to RX-D401 The JVC exclusive D/A converter turns the 192kHz/24-bit output into an analog signal with impeccable accuracy. < 27 >...

  • Page 28: Noise Shaping Response/Noise Spectrum

    VISUAL PROOF P.E.M. D.D. Converter P.E.M. D.D. Converter Noise Shaping Response/Noise Spectrum RX-D702 RX-D402 *Also applies to RX-D401 Noise Shaping Response (Theoretical) Noise Spectrum Conventional D/A Converter Frequency (Hz) P.E.M. D.D. Converter VANS=JVC Advanced Noise Shaper Frequency (Hz) < 28 >...
  • Page 29 VISUAL PROOF P.E.M. D.D. Converter P.E.M. D.D. Converter 192kHz/24-bit and 96kHz/24-bit A/D Converters -- RX-D702 RX-D702 Digital IN Digital IN Analog IN Analog IN Coax Coax Converter Converter Opti Opti DVD Audio IN Opti Opti HDMI HDMI Opti Opti P.E.M. D.D.

  • Page 30: Khz/24-Bit And 96Khz/24-Bit A/D Converters -- Rx-D402/D401

    VISUAL PROOF P.E.M. D.D. Converter P.E.M. D.D. Converter 192kHz/24-bit and 96kHz/24-bit A/D Converters -- RX-D402/D401 RX-D402 *Also applies to RX-D401 Analog Digital IN Digital IN Converter Converter Coax Coax DVD Audio IN Opti Opti HDMI HDMI Opti Opti P.E.M. D.D. P.E.M.
  • Page 31 Aureus™ -- High-Performance DSP for Superior Sound Quality JVC exclusive DSP -- implemented by the JVC exclusive DSP JVC exclusive DSP Texas Instruments “Aureus”™ DSP -- Texas Instruments Floating-Point DSP -- Aureus™ (TMS320DA601) simulates the acoustics of music venues. In doing so, it makes use of a vast amount of JVC’s DSP...
  • Page 32 RX-D402 *Also applies to RX-D401 At the heart of the RX-D702/D402/D401’s DSP is a new high-performance Texas Instruments DSP -- Aureus™. It’s the world’s fastest, highest-performing chip of its kind now, replacing two conventional DSP chips. The JVC receiver is the world’s first to feature this LSI.
  • Page 33 Stereo Playback surrounded by sound. JVC developed the DAP for one objective: to make the home theater audience feel as if they were in the best movie theater surrounded by an array of speakers to the left and right, and behind.
  • Page 34 JVC exclusive DSP JVC exclusive DSP Sound Field Analysis (Ray Tracing) Sound Field Analysis (Ray Tracing) RX-D702 RX-D402 *Also applies to RX-D401 The figure shows the paths of the “sound rays” as they propagate from a sound source (red, black and brown balls) to the receiver (blue ball). The DSP calculates the properties of a reflection sound (time delay and direction) from the paths of the sound rays.
  • Page 35 JVC exclusive DSP JVC exclusive DSP The reason why sound field simulation by DSP produces better results than The reason why sound field simulation by DSP produces better results than one based on actual measured environments. one based on actual measured environments.
  • Page 36 JVC exclusive DSP JVC exclusive DSP DAP Modes (1) DAP Modes (1) RX-D702 RX-D402 *Also applies to RX-D401 THEATER 1 THEATER 2 LIVE CLUB Capacity: 6,500m Seats: Approx. 600 Capacity: 2,000m Seats: Approx. 300 Capacity: 400m Seats: 70 Reverberation: 1.23 sec.

  • Page 37: Theater

    JVC exclusive DSP JVC exclusive DSP DAP Modes (2) DAP Modes (2) RX-D702 RX-D402 *Also applies to RX-D401 DAP Modes for Dolby Digital Linear Analog Mode Signal 5.1 ch 2 ch 5.1 ch 2 ch RX-D702/D402/D401 HALL 1 HALL 2...
  • Page 38 JVC exclusive DSP JVC exclusive DSP 5-Band Graphic Equalization 5-Band Graphic Equalization RX-D702 RX-D402 *Also applies to RX-D401 A graphic equalizer lets you adjust the levels of The TI Aureus™ chip ensures high-speed processing center frequencies. for equalization, while it executes various decode processing (Dolby Digital, dts, etc.)
  • Page 39 Transfer Function (HRTF). Direct Sound Reflections In developing the 3D Headphone technology, Direct Sound Direct Sound Processing Processing JVC has applied an exclusive algorithm that Virtual Sound Field Created by Early Early divides the audio signals the 3D Headphone Technology Delay Reflection...
  • Page 40 JVC exclusive DSP JVC exclusive DSP Midnight Mode Midnight Mode RX-D702 RX-D402 *Also applies to RX-D401 INPUT OUTPUT High High Midnight Mode Processing Frequency Frequency Frequencies of Input/Output Audio Signals The DSP divides input signals into three bands (LOW/MID/HIGH), and processes the signals so that low-level sound in each band will High Sound Levels get louder and loud sound will be moderated.
  • Page 41 The result is that dialog, carried by the center speaker, seems out of place relative to music and sound effects. JVC's exclusive DSP application virtually positions the center speaker to align it with other speakers with respect to height.
  • Page 42 But with JVC's Smart Surround Setup Version 3.0, it takes just seconds to set up the acoustic environment of your home theater. Clap your hands, and the delay times of all channels are set individually, and the level of each speaker is automatically trimmed -- optimized for your listening position.
  • Page 43 . III Hybrid Feedback Digital Amplifier . III Technological Improvement for Even Technological Improvement for Even The RX-D702 and RX-D402/D401 come with an Better Sound Better Sound upgraded “Ver. III” device, which incorporates a wide range of technological improvements for Low-Voltage Power Supply even better sound quality.
  • Page 44 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier JVC technologies for satisfying the THX Ultra2 certification Background -- What is PWM? Background -- What is PWM? RX-D702 RX-D402 *Also applies to RX-D401 Pulse Width Modulation (PWM) is a method of digitally encoding analog Switching Power Supply with signal levels.
  • Page 45 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier JVC technologies for satisfying the THX Ultra2 certification Problems of Digital Amplifiers Problems of Digital Amplifiers RX-D702 RX-D402 *Also applies to RX-D401 With conventional amplifiers, the mechanism for digital signal processing tends to cause a wide range of noise.
  • Page 46 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier JVC technologies for satisfying the THX Ultra2 certification Evolution of Hybrid Feedback Digital Amplifier (1) Evolution of Hybrid Feedback Digital Amplifier (1) RX-D702 RX-D402 *Also applies to RX-D401 Hybrid Feedback Digital Amplifier Use of two feedback loops eliminates the noise generated at each process: Digital feedback -- for significantly improving the precision of PWM signal generation.
  • Page 47 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier JVC technologies for satisfying the THX Ultra2 certification Evolution of Hybrid Feedback Digital Amplifier (2) Evolution of Hybrid Feedback Digital Amplifier (2) RX-D702 RX-D402 *Also applies to RX-D401 Hybrid Feedback Digital Amplifier Ver. II Double analog feedback ensures even lower distortion.
  • Page 48 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier JVC technologies for satisfying the THX Ultra2 certification Evolution of Hybrid Feedback Digital Amplifier (3) Evolution of Hybrid Feedback Digital Amplifier (3) RX-D702 RX-D402 *Also applies to RX-D401 Hybrid Feedback Digital Amplifier Ver. III Double analog &...
  • Page 49 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier Ver. III . III JVC technologies for satisfying the THX Ultra2 certification Low-Voltage Power Supply Low-Voltage Power Supply RX-D702 RX-D402 *Also applies to RX-D401 Hybrid Feedback Digital Amplifier Ver. III also features low voltage power supply, which ensures stable signal transfer.
  • Page 50 *Also applies to RX-D401 The Hybrid Feedback Digital Amplifier Ver. III features use of a new IC dubbed “JCV8015”. This superior device, developed by JVC, contains all the circuits necessary for digital signal processing, including dual audio input circuits, the Hybrid Feedback Signal Processing Circuit, and PWM modulators.
  • Page 51 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier Ver. III . III JVC technologies for satisfying the THX Ultra2 certification JCV8015 Benefits (1) -- Operational Amp JCV8015 Benefits (1) -- Operational Amp RX-D702 RX-D402 *Also applies to RX-D401 Superior Operational Amp for Low Distortion and Low Noise...
  • Page 52 Triangular Waves Synchronization by an External Clock Slight gap of frequencies among channels causes specific noise. To prevent this, the JVC amplifier uses an external clock, which synchronizes the operations of all channels. Noise is also generated when the unit receives AM signals whose frequency overlaps that of audio signals.
  • Page 53 Hybrid Feedback Digital Amplifier Hybrid Feedback Digital Amplifier Ver. III . III JCV8015 Benefits (3) -- ±2.5V Regulator JVC technologies for satisfying the THX Ultra2 certification JCV8015 Benefits (3) -- ±2.5V Regulator RX-D702 RX-D402 *Also applies to RX-D401 Use of the built-in ±2.5V regulator prevents digital noise interference to analog GND.
  • Page 54 (see the following pages for details). This means when the distortion of input signals are lower, that of output signals are lower than when input signals have higher distortion. This is why JVC engineers applied a wide range of quality parts for the A/V receivers. These devices ensure even better sound quality by sending low-distortion signals to the Hybrid Feedback Digital Amplifier Ver.
  • Page 55 Hybrid Feedback Digital Amplifier Ver. III . III Hybrid Feedback Digital Amplifier VISUAL PROOF JVC technologies for satisfying the THX Ultra2 certification Comparison of Speaker Driveability RX-D702 RX-D402 *Also applies to RX-D401 Usually, speaker impedance fluctuates according to the frequencies of audio signals.
  • Page 56 Hybrid Feedback Digital Amplifier Ver. III . III Hybrid Feedback Digital Amplifier VISUAL PROOF JVC technologies for satisfying the THX Ultra2 certification T.H.D. Comparison of Digital Amplifiers RX-D702 RX-D402 *Also applies to RX-D401 Non-Feedback Amp 0.004% 0.01 Hybrid Feedback Digital Amp (RX-D702) 0.001...
  • Page 57 Supplementary Information OSD Superimposed on Screen OSD Superimposed on Screen RX-D702B Audio/Video Control Receiver RX-D702B Audio/Video Control Receiver RX-D402B Audio/Video Control Receiver RX-D402B Audio/Video Control Receiver Multi-Brand A/V-STB (CATV/DBS) Glow Remote Control Multi-Brand A/V-STB (CATV/DBS) Glow Remote Control Rear Panel Rear Panel <...
  • Page 58 JVC technologies for satisfying the THX Ultra2 certification OSD Superimposed on Screen OSD Superimposed on Screen RX-D702 The RX-D702 displays a wide range of OSD for Smart Surround Setup information -- including the Smart Surround Setup processes -- superimposed on your monitor screen to ensure easy recognition and control.
  • Page 59 JVC technologies for satisfying the THX Ultra2 certification RX-D702B Audio/Video Control Receiver RX-D702B Audio/Video Control Receiver 7-Channel Receiver Featuring HDMI, New Digital Amplifier, and Wireless PC Connectivity Basic Features Product Highlights • Stereo: 150 watts per channel, 6 ohms, from •...
  • Page 60 JVC technologies for satisfying the THX Ultra2 certification RX-D402B Audio/Video Control Receiver RX-D402B Audio/Video Control Receiver 7-Channel Receiver with HDMI, PC Connection via USB and New Digital Amplifier Product Highlights • 3D Headphone Basic Features • Hybrid Feedback Digital Amplifier Ver. III •...
  • Page 61 JVC technologies for satisfying the THX Ultra2 certification Multi-Brand A/V-STB (CATV/DBS) Glow Remote Control Multi-Brand A/V-STB (CATV/DBS) Glow Remote Control For RX-D702B For RX-D402B/RX-D401S < 61 >...
  • Page 62 JVC technologies for satisfying the THX Ultra2 certification Rear Panel Rear Panel RX-D702B RX-D402B/RX-D401S < 62 >...
  • Page 63 < 63 >...

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