Lehmannaudio Black Cube Statement

Questions and Answers

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Jeffrey MillerSep 3, 2025
What to do if there is no signal from my Lehmannaudio Black Cube Statement?
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  nancywilsonSep 4, 2025
  If you are experiencing no signal with your Lehmannaudio Amplifier, ensure the power supply is correctly plugged into the outlet and connected to the device. Also, verify that the input and output connections on the Black Cube Statement are correctly configured, with cables from the record player connected to the input and cables to the amplifier connected to the output. Finally, make sure that you have selected the correct input channel on your downstream amplifier.
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juanespinozaSep 18, 2025
What to do if there is interference from another device with my Lehmannaudio Black Cube Statement?
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  michaelandersonSep 18, 2025
  To address interference from another device affecting your Lehmannaudio Amplifier, disconnect all devices connected to the same circuit one by one to identify the source. While listening to music, keep the interfering device switched off or connect it through a line filter.
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Jason CohenSep 16, 2025
What causes buzzing noise in my Lehmannaudio Amplifier?
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  Joshua HammondSep 16, 2025
  If you are experiencing a buzzing noise with your Lehmannaudio Amplifier, it may be due to a power transformer of a nearby device crossfeeding into the input. Try to maintain sufficient distance from the device causing the interference.
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Jonathan RamosSep 14, 2025
How to eliminate radio interference in my Lehmannaudio Black Cube Statement Amplifier?
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  Devin SmithSep 14, 2025
  If you hear radio interference in the background of your Lehmannaudio Amplifier, ensure the pick-up arm ground is connected to the Black Cube Statement. If using MC, consider having the custom impedance jack equipped with additional capacity by the dealer, as the standard input capacitance (100 pF) might be too low.
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Holly HaleSep 13, 2025
Why does the signal sound hollow on my Lehmannaudio Black Cube Statement?
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  Matthew GomezSep 13, 2025
  If your Lehmannaudio Amplifier signal sounds hollow, lacking proper bass and localization, ensure the pick-up connection is not phase-inverted by connecting the system cable with correct polarity. Also, connect the pick-up arm ground to the Black Cube Statement and establish a proper ground connection to avoid buzzing loops. If necessary, consult an electrician.
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Mary PowellSep 12, 2025
Why are the left and right channels inverted on my Lehmannaudio Black Cube Statement Amplifier?
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  Patrick Walker Jr.Sep 12, 2025
  If the left and right channels are inverted on your Lehmannaudio Amplifier, check the connecting cables for any channel inversions and swap them if necessary. Also, ensure that the adjustment between the pick-up system and Black Cube Statement is optimal by increasing the amplification factor using the DIP switches or activating the high gain Jumper.
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Kenneth DuncanSep 9, 2025
How to fix the operating LED if it does not light up on my Lehmannaudio Black Cube Statement Amplifier?
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  Madison ClarkSep 9, 2025
  If the operating LED on your Lehmannaudio Amplifier does not light up, first ensure that the power supply is plugged into the outlet. If it is, check that the power supply is properly connected to the device.
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Amber MejiaSep 7, 2025
What to do if I only get signal on one channel of my Lehmannaudio Black Cube Statement Amplifier?
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  greerjessicaSep 7, 2025
  If you're only getting a signal on one channel of your Lehmannaudio Amplifier, check the DIP switches and gain Jumpers to ensure they are set consistently for both channels. Inspect the connecting cables for any loose contacts, improper insertion, or defects, especially the system cable, pick-up arm cable, and line cable. If the issue persists, try connecting to various line inputs to rule out a defective downstream input stage.
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Keith HollandSep 5, 2025
Why is the signal distorted on my Lehmannaudio Amplifier?
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  Margaret SnyderSep 6, 2025
  If the signal from your Lehmannaudio Amplifier is distorted, the amplification in the Black Cube Statement might be set too high. Try decreasing the amplification factor using the DIP switches or deactivating the high gain Jumper. Also, ensure that the output of the Black Cube Statement is connected to a line input of the downstream amplifier, not a phono input.
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shannon68Aug 20, 2025
What to do if my Lehmannaudio Phono Stages Black Cube Statement has no signal?
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  Amber HarrisAug 21, 2025
  If your Lehmannaudio Phono Stages Black Cube Statement has no signal, there are several potential causes: * Ensure the power supply is correctly plugged into the outlet. * Verify the power supply is securely connected to the device. * Confirm that the cables from the record player are connected to the input and the cables to the amplifier are connected to the output. * Check that the correct input channel is selected on your amplifier.

Summary

Introduction

Product Overview and Quality

Details the Black Cube Statement phono amplifier, its German origin, and commitment to sound quality.

Market Positioning

Describes the product as an ideal entry-level model in high-end phono amplifiers.

Further Information

Directs users to the operating manual and website for more details.

Important Safety Notes

Warning Classification and Symbols

Explains the hierarchy of warning notes and the meaning of associated symbols used in the manual.

General Precautions

Covers storage, operation notes, heat, ventilation, water, and liquid ingress precautions.

Power and Electrical Safety

Power Cable Usage

Details correct usage of power cables, including protective conductor and polarity for safe operation.

Power Supply and Protection

Covers using the correct power supply, protection against thunderstorms, and avoiding electric overload.

Fire Safety and Accessories

Advises against fire sources and specifies the use of manufacturer-approved accessories.

Device Handling and Maintenance

Mounting and Placement

Instructions for safe and stable mounting, ensuring access to the mains plug.

Cleaning Instructions

Specifies using only a dry cloth for cleaning the device.

Storage During Non-Use

Recommends unplugging the device when not in use for extended periods.

Authorized Service and Repair

States that all service and repair must be done by authorized technicians.

Approved Spare Parts

Emphasizes using only manufacturer-specified and approved spare parts for repairs.

Important Safety Instructions for Power Supplies

Power Supply Manual and Condition

Stresses reading the manual, using the included supply, and checking for damage before use.

Environmental and Operational Limits

Details safe operating conditions, temperature ranges, and unsuitable installation locations.

Power Supply Handling

Covers accessory use, disconnection procedures, and proper cable handling.

Installation and Setup

Unpacking and Inspection

Guide on unpacking the device and checking for transport damages before connection.

Functional Description

Setup and Connecting

Instructions on positioning the device and connecting it to the mains power supply.

Input Connections

Describes the Ground terminal (GND) and Input jacks (IN) for connecting a record player.

Device Outputs and Indicators

Output Connections

Explains the RIAA filtered high-level output jacks (OUT) for connecting to amplifiers.

Warning: Output to Phono Input

Warns against connecting the output to a phono input, which can damage the device or speakers.

Operating Mode Display (LED)

Details the function of the LED as an operational status indicator; no power switch.

External Power Supply Input

Identifies the port for connecting the external power supply.

Putting into Operation

System Information and Setup

Advises gathering pick-up system details (MM/MC, resistance) before proceeding with operation.

Operation Steps

Outlines the sequence for setting volume, gain, termination, connecting components, and power.

Common Settings and Configuration

MM;MC Settings Guide

Provides a table of switch and gain jumper configurations for various MM and MC pick-up systems.

Expert Notes and Internal Adjustments

Internal Adjustment Mechanisms

Discusses internal adjustments for experts, including the use of an Allen key and jumpers for amplification changes.

Jumper Functions

Explains the specific functions of internal jumpers like DC bridging, gain adjustment, bass roll-off, and impedance settings.

Sound Optimisation Tips

Pick-up Geometry and System Adjustment

Recommends specialist adjustment of pick-up arm geometry and system for optimal sound and wear.

Vibration and Decoupling

Suggests optimizing vibration behavior and using a decoupling mat for improved sound.

Cable Selection and Assembly

Highlights the importance of choosing and assembling appropriate cables for signal integrity.

Technical Specifications

MM Technical Specifications

Lists detailed technical specifications for the MM (Moving Magnet) system.

MC Technical Specifications

Lists detailed technical specifications for the MC (Moving Coil) system.

Troubleshooting

Power and Signal Issues

Addresses problems like the operating LED not lighting up and no signal, providing causes and solutions.

Channel and Signal Level Problems

Covers issues with single-channel output, inverted channels, and low signal levels, with their respective causes and fixes.

Advanced Troubleshooting

Signal Quality and Noise Issues

Tackles distorted signals, hollow sound, and buzzing noise, offering troubleshooting steps.

Radio Interference and Grounding

Explains how to deal with radio interference and buzzing noise caused by grounding or transformer issues.

Legal and Compliance Information

Warranty and Registration

Details the two-year warranty, proof of purchase, and product registration process.

Service and Modifications

Outlines service procedures, authorized repairs, and restrictions on device modifications.

Compliance and Certifications

Lists CE conformity and RoHS compliance, along with relevant European directives.

Disposal and Company Information

WEEE Disposal Guidelines

Provides instructions for the proper disposal of electronic waste according to WEEE directive.

Managing Director Signature

Includes the signature and location of Norbert Lehmann, Managing Director.