AKG Acoustics CU 400 manual Cleaning, Troubleshooting, Problem Possible Cause Remedy

Page 8

4 Charging

the charger will not be subjected to vibrations during the charging cycle and will rest firmly on a hard surface.

6.Items 1 and 2 above notwithstanding, if you wish to extend the useful life of rechargeable batteries be sure to

•completely discharge the battery every time, i.e., not to charge the battery before the battery warn- ing appears on the transmitter display (see also the WMS 400 manual);

•charge the battery fully every time, i.e., not to remove it from the charger before the charging cycle is completed;

•avoid charging batteries at temperatures below +5°C or above +40°C. At these temperatures, the charging cycle will not start and the STATUS LED will be lit orange.

The charging cycle will be resumed automatically as soon as the battery temperature returns to the acceptable range.

•use no batteries other than the rechargeable types recommended in section 7 Specifications.

7.Rechargeable batteries will only reach their full capacity after several charging cycles.

8.If you insert a transmitter with a dry battery into the charger, the charging cycle will be stopped imme- diately after the battery test and a few minutes of charging. The STATUS LED will start flashing red. Although there is virtually no risk of damaging the transmitter or charger, it is good practice not to insert transmitters using dry batteries into the charger.

5 Cleaning

Important! 1. Disconnect the DC cable from the rear panel DC 5 V jack.

2. Use a cloth moistened (not wet!) with water to clean the surfaces of the charger.

Important! Never use caustic or scouring cleaners or cleaning agents containing alcohol or solvents since these may damage the enamel or plastic parts.

6 Troubleshooting

Problem

 

Possible Cause

 

Remedy

All LEDs dark.

•

No defect. STATUS LEDs are not activat-

•

(Insert transmitter with rechargeable bat-

 

 

ed before you insert a transmitter with a

 

tery.)

 

 

battery into a charging slot.

 

 

 

 

 

 

 

 

1.

AC adapter is not connected to power.

1.

Connect power supply to convenient

 

 

 

 

power outlet.

All LEDs dark although at least one

2.

DC cable is no not connected to charger.

2.

Connect DC cable to charger.

3.

One or more charging contacts fail to

3.

Check contacts for resilience, or clean

charging slot is loaded.

 

make contact with the transmitter.

 

contacts.

 

4.

Internal error.

4.

Disconnect power supply or DC cable,

 

 

 

 

wait for 10 seconds, and connect again.

 

 

 

 

Should the problem persist, contact your

 

 

 

 

nearest AKG Service Center.

 

 

 

 

 

 

•

Charging cycle has been stopped:

 

 

 

1.

Transmitter uses dry battery.

1.

Remove transmitter from charging slot;

 

 

 

 

replace dry with rechargeable battery.

 

2.

Charging contacts contaminated.

2.

Clean charging contacts on charger and

 

 

 

 

transmitter with soft cloth.

 

3.

Inside temperature of battery is too high.

3.

Allow battery/charger to cool down,

STATUS LED flashing red.

 

 

 

charging cycle will resume when tempera-

 

 

 

ture returns to acceptable range.

 

 

 

 

Should the problem persist, contact your

 

 

 

 

nearest AKG Service Center.

 

4.

Inside temperature of charger is too high.

4.

Make sure there is enough free space

 

 

 

 

around charger to provide adequate heat

 

 

 

 

dissipation.

 

5.

Battery defective (voltage <0.5 V).

5.

Replace battery.

 

6.

Charger connected to incompatible power

6.

Use original AC adapter supplied with

 

 

supply whose output voltage is too high:

 

charger.

 

 

both STATUS LEDs flashing red.

 

 

 

7.

Charger defective.

7.

Contact your nearest AKG Service Center.

 

 

 

 

 

8

CU 400

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Contents WMS400 CU Sicherheit und Umwelt BeschreibungEinleitung Lieferumfang Ladestation CUAnschluss LadebetriebReinigung Fehler Mögliche Ursache Behebung FehlerbehebungTechnische Daten Safety and Environment Introduction Unpacking Description IndicatorsDescription AA size NiMH rechargeableConnecting to Power ChargingProblem Possible Cause Remedy CleaningTroubleshooting Specifications FCC StatementIntroduction Fournitures d’origine Description Bloc secteur à fiche si mar Accus NiMH, dimension AASécurité et environnement Raccordement Processus de chargeNettoyage Erreur Cause possible Intervention DépannageCaractéristiques techniques Sicurezza ed ambiente DescrizioneIntroduzione Dotazione Descrizione Accumulatori NiMHCollegamento Esercizio di caricaPulizia Dati tecnici Errori e rimediErrore Possibile causa Rimedio Descripción Introducción Volumen de suministrosSeguridad y medio ambiente Conexión Función de cargaLimpieza Desperfecto Causa posible Remedio Reparación de desperfectosDatos técnicos Acumuladores NiMH Segurança e meio ambienteApresentação Conexão Processo de cargaLimpeza Limpe as superfícies com um pano úmido mas não molhadoEspecificações Resolver problemasProblema Causa possível Como resolver Notizen Notes Notes Note Notas Notas Notizen Notes Notes Note Notas Notas Notizen Notes Notes Note Notas Notas PSU Notizen Notes Notes Note Notas Notas Notizen Notes Notes Note Notas Notas AKG ACOUSTICS, U.S

CU 400 specifications

AKG Acoustics CU 400 is a premium studio microphone designed for professional recording and broadcasting applications. Known for its exceptional performance and versatility, the CU 400 embodies the high standards expected from AKG, a brand renowned in the audio industry for over seven decades. This microphone is particularly favored by sound engineers and musicians alike due to its pristine sound quality and robust construction.

One of the standout features of the CU 400 is its large diaphragm design, which enables it to capture an extended frequency range. This characteristic is vital for accurately reproducing vocals and a wide array of instruments, making it an excellent choice for studio recordings. The frequency response of the CU 400 spans from 20 Hz to 20 kHz, ensuring detailed clarity in both low-end and high-frequency ranges. This makes it ideal for a variety of applications, encompassing vocals, acoustic instruments, and even orchestral recordings.

The CU 400 incorporates advanced condenser technology, which enhances its sensitivity and transient response. This allows the microphone to pick up the finest details of the sound source, resulting in recordings that are not only clear but also dynamic and expressive. Additionally, the microphone features a cardioid polar pattern, which helps in minimizing background noise and focusing on the sound source directly in front of it. This characteristic is particularly useful in live recording situations and environments where ambient noise could interfere with the quality of the audio.

Another notable aspect of the AKG CU 400 is its durable build quality. Designed for both studio and stage applications, it withstands the rigors of professional use. The microphone's metal housing provides protection from physical damage, while the included shock mount helps to reduce vibrations and handling noise that could detract from the recording quality.

The CU 400 is also equipped with an integrated low-cut filter and a -20 dB pad, offering further flexibility in various recording situations. The low-cut filter reduces low-frequency rumble, while the pad allows the microphone to handle high sound pressure levels without distortion.

In summary, the AKG Acoustics CU 400 is a versatile, high-performance microphone that excels in a wide range of recording scenarios. Its combination of large diaphragm technology, cardioid pickup pattern, and robust construction makes it an invaluable tool for both amateur and professional audio engineers. Whether used for music production, voiceovers, or live performances, the CU 400 delivers the sound quality and reliability that AKG is known for.
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