Manual [PDF] (10 pages)
- Brand: Lehmannaudio
- Model: Black Cube Statement
- Format: PDF
- Key Aspects: Risk Mitigation and Accident Prevention, Basic Configuration Guidelines, Component Overview and Descriptions
- Updated: 23.03.2026
- Source File: 1191354.pdf
- Pages: 10
- Description: Maintenance and service manual for the Lehmannaudio Black Cube Statement.
Document Preview & Text Transcription
Black Cube Statement
High End MM/MC Phono Stage
High Precision Passive RIAA-Network
Manual
Lehmannaudio
Valued customer,
Congratulations for buying the Lehmannaudio Black Cube Statement phono RIAA preamplifier.
The Black Cube Statement is manufactured in Germany using very high quality components
and carefully constructed to give you many years of musical pleasure.
This unit is made only for being inserted between a turntable‘s passive cartridge output and
any audio amplifier‘s high level input. The Black Cube Statement will handle nearly any system
cartridge from high-level to low-level MM or MC and is made to fulfill the demands of audiophi-
les who enjoy analog music reproduction.
Please keep this manual nearby the Black Cube Statement so that you can refer to it for
further use.
Precautions
Please read the following before operating your Black Cube Statement phono preamp-
lifier. Wherever applicable below, Black Cube Statement also includes the external
power supply and its cable.
While Installing the Black Cube Statement
- Make sure that you have the appropriate version for your mains voltage.
- Be careful to prevent the Black Cube Statement from getting wet; do not allow water to enter
the Black Cube Statement, especially when raining or snowing, or near a body of water. Other-
wise fire or electrical shock may result.
- Do not place heavy objects on the power cord. If the cord is damaged, fire or electrical shock
may result. In particular, it is possible that one might accidantally place a heavy object on a
carpet that covers the cord; definitely avoid these situations!
- Do not install the Black Cube Statement in a place where it might be exposed to oil, smoke or
steam (for example, near a cooking table or humidifier). Otherwise, fire or electrical shock may
result.
- Do not place the Black Cube Statement on an unstable surface, such as an unstable bench or
slanted surface. Otherwise, the device may fall or drop, resulting in an injury.
- Do not place the Black Cube Statement near a heating device. Otherwise, the cord sheath
may melt, resulting in fire or electrical shock.
- Do not locate the Black Cube Statement in a place subject to excessive heat, such as inside a
car with all the windows closed, or in direct sunlight. Otherwise, fire may result.
- Do not handle the power plug with wet hands. Otherwise you may receive an electrical shock.
- When you remove the power plug, be sure to hold the plug. Never pull on the cord. Otherwi-
se, the power cord may become damaged, resulting in fire or electrical shock.
- The Black Cube Statement offers superb sonic quality. To ensure best possible results, you
should use the best quality connecting cables that you can afford. Regular maintenance invol-
ves keeping all connections clean using a quality contact cleaner.
Using the Black Cube Statement
Do not touch the Black Cube Statement under the following circumstances:
- If you hear thunder, remove the power supply from the AC outlet as soon as possible. If you
fear a lightning hit and the Black Cube Statement has been connected to an AC outlet, do
not touch the power supply. Otherwise you may receive an electrical shock.
- Do not attempt to modify this equipment. Otherwise, fire or electrical shock may result.
Warranty is void on modified devices. Exceptions: dip switch settings and fitting of custom
input load. If you feel uncertain about how to set up your unit properly consult your dealer.
- If you think the Black Cube Statement needs to be checked for maintenance or repair, consult
your dealer.
- Do not place a container of water or any small metal object on top of the Black Cube
Statement or the external power supply. If water is spilled or if the metal object gets inside,
fire or electrical shock may result. This applies to vases, pottet plants, glasses, cosmetic
bottles, medicine, etc. Do not change the setting of the dipswitches with any tools that
consist of metal.
- Do not damage, process, bend, twist, stretch or heat the power cord. If the cord is dama-
ged, fire or electrical shock may result.
- When you are connecting other audio devices to the Black Cube Statement make sure
that you first turn off the power to all devices to be connected. Refer to the user´s guide for
each device and use the specific cable for connection.
- Set the volume levels of all devices to minimum before connecting the Black Cube State-
ment to your actual setup and to the AC outlet. Otherwise, an extremely loud noise could
damage your loudspeakers or even your hearing.
- If you plan not to use the Black Cube Statement for a long period of time (such as when
you are on vacation), remove the power plug from the AC outlet. Otherwise, a fire could
possibly result.
If any abnormality occurs while using the Black Cube Statement, remove the plug from the
AC outlet. In this case first shut off the power amplifiers or turn down the volume controls
and so on to avoid possibly damaging transients
- If you notice any abnormality - such as smoke, smell, noise, etc. - remove the plug from
the AC outlet. Confirm that the abnormality is no longer present, then consult your dealer
for repair. If you continue using the Black Cube Statement under abnormal conditions, fire
or electrical shock may result.
- If a foreign object or water enters inside the equipment, remove the Plug from the AC out-
let and consult your dealer for repair. If you continue using the Black Cube Statement under
this condition, fire or electrical shock may result.
- If the power cord is damaged (for example if it is cut or if the core wire is exposed), ask
your dealer for a replacement of the external power supply. If you continue using the Black
Cube Statement under this conditions, fire or electrical shock may result.
- If the Black Cube Statement or the external power supply is dropped, or if the case is
damaged, remove the power supply from the AC outlet and consult your dealer. If you conti-
nue using the Black Cube Statement under abnormal conditions, fire or electrical shock may
result.
Maintenance
- Before cleaning the Black Cube Statement, remove the power plug from the AC outlet for
safety. Otherwise, an electrical shock may result.
- Do not open the external power supply of the Black Cube Statement. There are hazardous
voltages inside that might result in an injury or an electrical shock.
Description
The passive filter network of the Black Cube Statement is located between two linear active
amplifier stages. Phase errors that occur due to active filter designs are thereby eliminated.
Low-loss, high precision WIMA foil capacitors in the filter network are responsible for very
good localization and soundstage reproduction.
Sensitivity for 775mV/eff. output voltage: 0,77mV/7,7mV switchable on board (MC/MM).
Input capacitance: 100pF default
Input impedances: 47 kOhms/ 1 kOhms/100 Ohms switchble on board (Dip-switches with
gold plated contacts), one slot for solder free installation of custom impedance on the prin-
ted circuit board (PCB). No need for expensive impedance plugs!
Output impedance: <100 Ohms
Gold plated RCA-connectors, massive ground connector
The external AC power supply of the Black Cube Statement can be placed up to two meters
away from the audio section. The AC voltage is rectified, regulated and buffered onboard
the audio pcb.
Case of 1,5mm aluminium protects the audio electronics.
Please read this manual first before connecting the Black Cube Statement to
mains voltage!
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