Classe Audio cp-700 Troubleshooting, Everything appears to be on, but there is no sound

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Important!

Important!

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Troubleshooting

In general, you should refer any service problems to your Classé dealer. Before contacting your dealer, check to see if the problem is listed here. If it is, try the suggested solutions. If none of these solves the problem, contact your Classé dealer.

1.Everything appears to be on, but there is no sound.

Adjust the volume control to a moderate level (one that should be audible but is not excessive).

Make sure the source component for which the input has been selected is switched on and is out of its standby mode.

Make sure the proper input has been selected for the source being used.

Check that the preamplifier is not in mute mode. This is indicated by the operational menu icon in the form of a speaker with a bar through it. Press Mute to disengage.

Ensure that the power amplifier is powered up and out of standby mode.

Check if the tape monitor is enabled. If it is engaged and the recorder is off, you will not hear the selected source. Disengage by pressing Tape, unless you wish to monitor the recording.

If the problem occurs only with a particular input, check the interconnect cables between that source and the preamplifier.

If the problem occurs with all inputs, check the cables between the preamplifier and the power amplifier. If no fault is found there, check the speaker wires for secure connections.

Check that the power amplifier is off before checking any connections between the preamplifier and power amplifier, or between the power amplifier and the speakers.

2.There is no sound and the Standby LED is not lit.

Ensure the preamplifier is plugged into the AC mains and switched on, and that the AC mains are operating normally. The unit will automatically attempt to protect itself from improper AC mains voltages by not powering up. Make sure your power amplifier is off (if the amplifier is already connected to the preamp) before plugging your preamplifier into the AC mains and powering it up.

If your preamplifier was plugged in properly, try the following: put it in standby, switch off the main power switch in the back, and unplug the unit for at least thirty seconds before trying to power it up again. (Sometimes a brownout of short-term loss of power might require a restart.)

Make sure to power down your power amplifier BEFORE doing the restart.

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Contents CP-700 Preamplifier Page Important Safety Instructions Contents Features Hardware setup Using CAN-Bus Word about installation Welcome to the Classé familyUnpacking and Placement Register your purchase Operating voltage Warm up/break-in period Please read this manual… Special Design Features Customizable volume controlExtensive listening tests Extraordinary longevity Standby button & LED indicator Front PanelMute button Menu buttonLCD touchscreen IR windowVolume Knob Tape Input Rear PanelOptional phono preamp Single-ended RCA inputsBalanced XLR main outputs Tape outputSingle-ended RCA main outputs This DB-9connector has two purposes RS-232 Control PortClassé CAN-Bus Control Ports IR Input and OutputGround terminal DC Power InputDC Trigger Input and Output Basic Functions Remote ControlInput Selection & Volume Navigation KeysFkey Controls Input selection Tape loop Menu SystemOperational menu Main menu system System setup Volume Rotary Rotary Max volume Startup volume Mute setupPage Max volume Startup volume Mute setup Input Page Phono gain Triggers Teach IRDisplay setup Brightness TimeoutLanguage Main balance Remote FkeysStatus Version info SensorsClassé Delta Series Products Features Hardware setupCAN-Bus Category 5 Network CablesUsing CAN-Bus CAN-Bus shared features Configuration Operate AC status Status NameGlobal brightness Global standby PlayLinkAmp info Event log There 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 Care and Maintenance Cleaning the cabinetSpecifications Dimensions v MM v v MM MMNorth America 1 800 370 3740 email classe@bwgroupusa.com
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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.