Classe Audio cp-700 owner manual There is a mechanical hum coming from the unit

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6.There is a mechanical hum coming from the unit.

This symptom suggests you have a lot of electrical noise on your AC mains line. Try connecting to another AC circuit (not merely a different plug, but a different circuit).

Check to see if you have any halogen lighting or dimmers on the same circuit as the preamplifier, as they can be the cause of hum in power supply transformers.

7.There is a noticeable change in volume between one input and another, even though the volume was not adjusted.

You may need to adjust the input offset setting to compensate for differences in output level between source components. Conversely, the input offset setting may have been adjusted inappropriately. Either way, you can correct the problem by going to the following location in the menu system:

Menu system setup input input name offset where input name is the input which needs to be adjusted.

If the input that seems incorrect is the phono input, make sure you are using the proper gain setting for the type of cartridge you are using. If in doubt, consult with your authorized Classé dealer.

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Contents English Risk of Electric Shock Do not Open Important Safety Instructions Contents Welcome to the Classé family Word about installationPlacement Ventilation Custom installations Serial number Unpacking and PlacementOperating voltage Warm up/break-in period Please read this manual… Special Design Features Extensive listening tests Extraordinary longevity Robust, isolated power suppliesFront Panel Standby button & LED indicatorMute button Menu buttonLCD touchscreen Volume Knob Single-ended RCA inputs Rear PanelOptional phono preamp Tape InputBalanced XLR main outputs Tape outputSingle-ended RCA main outputs RS-232 Control Port This DB-9connector has two purposesIR Input and Output Classé can Bus Control PortsGround terminal DC Power InputDC Trigger Input and Output Navigation Keys Remote ControlInput Selection & Volume Basic FunctionsFkey Controls Input selection Tape loop Menu SystemOperational menu Main menu system System setupRotary Max volume Startup volume Mute setup Volume RotaryEnglish Max volume Startup volume Mute setup Input English Teach IR Phono gainTriggers Brightness Timeout Display setupMain balance Remote Fkeys LanguageEnglish Version info Sensors StatusThere is no sound and the Standby LED is not lit TroubleshootingEverything appears to be on, but there is no sound There is a hum coming out of the speakers IR remote control seems not to functionOnly one speaker seems to be playing There is a mechanical hum coming from the unit Cleaning the cabinet Care and MaintenanceSpecifications NE Jamais Exposer CET Appareil À LA Pluie OU L’HUMIDITÉ Instructions importantes concernant la sécurité Sommaire Luminosité Extinction timeout Langue languageBienvenue dans la famille Classé Déballage et installation Tension d’alimentation Période de rodage Veuillez lire ce manuel… Interface graphique Caractéristiques particulièresLongévité extraordinaire Tests d’écoute intensifsAfficheur éteint Face avantTouche de mise en veille Standby et indicateur LED InitialisationFenêtre infrarouge IR Touche MenuÉcran tactile LCD Touche MuteBouton de volume Entrées symétriques prises XLR Face arrièreEntrée Tape enregistreur Entrées asymétriques prises RCASorties principales symétriques XLR Sortie Tape enregistreurSorties principales asymétriques RCA Prise de commande RS-232 Entrée et sortie infrarouge IR Prises de commande Classé can BusPrise de masse Ground Entrée alimentation courant continu DC PowerEntrée et sortie de commutation type DC Trigger Touches de navigation La télécommandeFonctions de base Sélection des entréesTouches de contrôles du système Fkey Sélection d’entrée Boucle d’enregistrement Le Système des MenusRéglage du système setup Chacun de ces paramètres est expliqué ci-dessous en détail Volume Bouton rotatifFrançais Volume maximum Volume au démarrage Entrée Français Apprentissage infrarouge IR Gain Phono Commutation TriggersLuminosité Extinction timeout Balance principale main balance Langue languageFrançais Info version Capteurs Tout semble correct, mais aucun son ne sort Problèmes de fonctionnementIl y a un bruit parasite dans les enceintes acoustiques La télécommande IR semble ne pas fonctionnerSeule une enceinte acoustique semble fonctionner Il y a un bruit mécanique en provenance de l’appareil Entretien du coffret EntretienSpécifications Dimensions Page V1.5 051706
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cp-700 specifications

The Classe Audio CP-700 is a high-performance audio preamplifier that exemplifies the brand’s commitment to sound quality, design, and innovative technology. Tailored for audiophiles and music enthusiasts, the CP-700 combines superior build quality with advanced circuitry to deliver an immersive listening experience.

One of the standout features of the CP-700 is its robust digital processing capabilities. It includes a high-resolution DAC (Digital-to-Analog Converter) that supports audio formats up to 24-bit/192kHz. This ensures that every detail of the music is reproduced with outstanding clarity and precision. The preamplifier also boasts multiple digital inputs, including USB, coaxial, and optical, making it versatile enough to accommodate various audio sources.

The analog section of the CP-700 is equally impressive, featuring Classe's proprietary technologies that minimize noise and distortion. The preamplifier utilizes high-quality components and a carefully engineered circuit design that embraces a dual-mono architecture. This approach reduces crosstalk and enhances imaging, allowing listeners to experience a wider soundstage and more defined instrument placement.

Moreover, the CP-700 features a state-of-the-art volume control system. Rather than a traditional potentiometer, Classe employs a digitally controlled analog attenuator, providing precise volume adjustments without compromising the audio quality. Users can expect smooth and seamless changes in volume levels, enhancing user experience during playback.

In terms of usability, the Classe CP-700 offers an intuitive interface, with a large, bright display and a user-friendly remote control. The preamp can also be controlled via an app, adding convenience for modern users who prefer controlling their audio systems through mobile devices.

Another notable characteristic is its elegant design. The CP-700 features a sleek aluminum chassis with a minimalist aesthetic that fits well in various home theater or music room setups. This careful attention to design aligns with Classe Audio’s philosophy of marrying form with function.

In conclusion, the Classe Audio CP-700 preamplifier stands out for its high-resolution audio capabilities, advanced volume control, and exceptional build quality. It is an ideal choice for discerning listeners who seek an unparalleled audio experience without compromising on features or aesthetics. With its combination of digital and analog prowess, the CP-700 represents the pinnacle of modern audio engineering.