Denon AVR-4800 manual Protector circuit

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Protector circuit

•This unit is equipped with a high-speed protection circuit. The purpose of this circuit is to protect the speakers under circumstances such as when the output of the power amplifier is inadvertently short-circuited and a large current flows, when the temperature surrounding the unit becomes unusually high, or when the unit is used at high output over a long period which results in an extreme temperature rise.

When the protection circuit is activated, the speaker output is cut off and the power supply indicator LED flashes. Should this occur, please follow these steps: be sure to switch off the power of this unit, check whether there are any faults with the wiring of the speaker cables or input cables, and wait for the unit to cool down if it is very hot. Improve the ventilation condition around the unit and switch the power back on.

If the protection circuit is activated again even though there are no problems with the wiring or the ventilation around the unit, switch off the power and contact a DENON service center.

Note on speaker impedance

•The protector circuit may be activated if the set is played for long periods of time at high volumes when speakers with an impedance lower than the specified impedance (for example speakers with an impedance of lower than 4 Ω /ohms) are connected. If the protector circuit is activated, the speaker output is cut off. Turn off the set’s power, wait for the set to cool down, improve the ventilation around the set, then turn the power back on.

Cooling fan

•The AVR-4800 is equipped with a cooling fan to prevent the temperature inside the set from rising. The fan is activated under certain usage conditions. It is temperature and volume level sensitive, to minimize or prevent audible fan noise.

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Contents AVR-4800 Safety Precautions Safety Instructions Before Using Table of ContentsFeatures Connections Connecting the audio componentsConnecting video components Connecting the video decks Connecting a video component equipped with S-Video jacksPrecaution when using S-jacks Connecting a monitor TVMonitor OUT jack Connecting a DVD player DVD in jacksConnecting the antenna terminals AM loop antenna assembly FM antenna adapter assemblyConnection of AM antennas Connecting the Multi Source jacks Connecting the external input EXT. in jacksConnections Connecting the speaker cordsSpeaker system connections Speaker ImpedanceWhen using a power amplifier for the surround back channel Connections when using surround back speakersRemote ON-OFF Protector circuit @6Display @4Input source indicatorsPart Names and Functions Front Panel+10 Remote control unitEnter button Setting UP the SystemSystem Setup button Surround Parameter buttonSurround speaker selector function Speaker system layoutSetting the type of speakers Before setting up the systemParameters Setting the Subwoofer modeEnter the setting System Setup Menu reappearsSetting Setting the THX Surround EXPreparations Setting the delay timeSetting the Power Amp Assignment Setting the channel level 1spkr FL C FR SR SBR SBL SL SW Flashing 2spkrs Subwoofer peak limit level setting Volume control is at a high levelAVR-4800 automatically sets the subwoofer peak limit level Setting the Digital In Assignment To select the input sourceTo select the digital input jack Setting the on-screen display OSD Auto tuner presetsSelect on or OFF On-screen display signals After completing system setupRemote Control Unit Using the remote control unitInserting the batteries Tuner system buttons Set mode switch 2 to the position for the component to beOperating Denon audio components OperatedPreset memory VCR Operate the video component Operating a video component stored in the preset memorySet the slide switch to the component to be registered DVD, VDP, VCR or TVLearning function Using the system call function System call functionSystem call buttons Clearing system call settings Storing signalsClearing learned remote control signals OperationBefore operating Input mode selection function Playing the input sourceExample CD Example Stereo Adjusting the sound quality toneListening over headphones After starting playbackSwitching the surround speakers Turning the sound off temporarily mutingChecking the currently playing program source, etc Multi-source recording/playback Playing one source while recording another REC OUT modePlayback using the external input EXT. in jacks Multi Room Music Entertainment System Multi-source and multi-zone playbackBefore playing with the surround function SurroundFader function THX Surround EX / Home THX Cinema mode This mode is optimized for playing 5.1-channel moviesPlaying modes for different sources Surround parameters q THX Surround EX Select the Home THX Cinema modeSurround Back indicator lights green Contains Low Frequency Effect soundsWhen the source is played Input channel Set the input mode to AutoSelect the Dolby Surround mode Dolby Digital indicator Lights whenDialogue Normalization Surround parameters w Cinema EQ. Cinema EqualizerCOMP. Dynamic Range Compression 7.1 SurroundDolby Surround Pro Logic mode Surround modes and their features Denon Original Surround ModesPersonal Memory Plus Unit’s panel Select the surround mode for the input channelDSP surround simulation Set the parametersTone control setting Surround modes and parameters Surround parameters eAuto tuning Manual tuningListening to the Radio Checking the preset stations Recalling preset stations Last Function MemoryInitialization of the Microprocessor Troubleshooting Movie audio Types of multi-channel signalsAdditional Information Optimum surround sound for different sourcesNumber of surround back speakers Surround back speakersSpeaker setting examples When not using surround back speakers When using different surround speakers for movies and musicDolby Digital compatible media and playback methods SurroundDolby Surround Dolby Digital Dolby Surround AC-3 Dolby Digital and Dolby Pro LogicDTS compatible media and playback methods DTS Digital SurroundDolby Pro Logic Dolby Pro Logic compatible media and playback methodsTHX Surround EX Home THX Cinema surround modeSurround modes and parameters Audio section Power amplifier Rated output Specifications

AVR-4800 specifications

The Denon AVR-4800 is a high-performance home theater receiver that has left a lasting impact on audiophiles and home entertainment enthusiasts since its launch. A product of Denon's legacy in audio technology, the AVR-4800 caters to individuals who seek an immersive listening experience while enjoying their favorite movies, music, and gaming.

One of the standout features of the Denon AVR-4800 is its powerful multi-channel amplification. The receiver supports an impressive configuration of up to 7.1 channels, delivering a total output of 100 watts per channel. This level of amplification ensures that even the most demanding audio tracks are delivered with clarity and depth, creating an enchanting surround sound environment. The ability to connect various speakers allows for a customizable sound setup, catering to the needs of diverse home theater configurations.

The AVR-4800 supports several audio formats and technologies, including Dolby Digital, DTS, and Dolby Pro Logic II. This compatibility allows users to experience high-quality sound reproduction across various media formats, whether they are watching a blockbuster movie or listening to their favorite music. With a comprehensive suite of surround sound processing options, the receiver ensures an immersive audio experience that draws listeners into the action.

Furthermore, the AVR-4800 features Denon's proprietary AL24 processing, which enhances the audio signal by providing wider dynamic ranges and reduced distortion. This technology captures nuanced details in music and film soundtracks, resulting in a richer and more engaging listening experience. The inclusion of digital signal processing and tone controls allows users to tailor the sound according to their preferences, ensuring that every user can achieve their ideal audio setup.

The AVR-4800 also includes a range of connectivity options. It boasts multiple analog and digital inputs, allowing users to connect various devices, such as Blu-ray players, gaming consoles, and streaming devices. The receiver features video scaling capabilities, enabling it to upscale standard-definition video to high-definition output for better picture quality while watching films or shows.

Overall, the Denon AVR-4800 combines advanced audio technologies, impressive amplification, and versatile connectivity to provide an exceptional home theater experience. Its commitment to sound quality and user-friendly features make it a notable choice for anyone looking to elevate their entertainment setup. Whether you're a casual viewer or a serious audiophile, the AVR-4800 promises to deliver an auditory experience that is nothing short of mesmerizing.
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