AKG Acoustics CU 400 manual Connecting to Power, Charging

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3 Connecting to Power

1.

Check that the AC mains voltage stated on the included power supply is identical to the AC

Important!

 

 

mains voltage available where you will use your system. Using the power supply with a differ-

 

 

 

ent AC voltage may damage the unit.

 

 

 

 

 

 

 

Do not use any power supply other than the AC adapter supplied with the charger.

Important!

 

 

Never connect the CU 400 charger to the PSU 4000 central power supply because the output

 

 

 

voltage of the PSU 4000 is incompatible with the CU 400.

 

 

2.

Connect the DC cable of the supplied AC adapter to the DC 5 V jack on the charger rear panel.

Refer to fig. 1.

3.Connect the AC adapter to a convenient power outlet.

4.The charger is ready to operate. Note that both STATUS LEDs remain dark.

4 Charging

 

Rechargeable batteries (those included or those you may buy later) are delivered uncharged or

Important!

 

 

partially charged. Therefore, you will need to charge each new battery before using it.

 

 

 

 

Each charging slot features a tricolor STATUS LED that indicates the current operating status of the

 

 

 

4.1 STATUS LEDs

 

respective charging slot (">…<" marks an LED flashing in the respective color):

 

 

STATUS LED

Status

---The charger is ready to operate, no transmitter is inserted in the charging slot.

orange

 

The battery inside the inserted transmitter is being checked.

red

 

The battery is being charged.

green

 

The battery is fully charged; the charging cycle is completed.

>red<

 

Error.

Table 1: STATUS LED indica- tions

1.

Check that a rechargeable battery is inside the transmitter battery compartment.

4.2 Inserting a Transmitter

 

Do not try to charge a dry battery.

with a Battery Inside

 

If there is no battery inside the battery compartment, do not place the transmitter in a charging slot

 

 

before you inserted a rechargeable battery into the transmitter.

 

2.

Make sure to switch the transmitter OFF before placing it in a charging slot.

 

 

This is the only way to guarantee optimum charging.

 

3.

Insert the transmitter into the charging slot so that the display on the transmitter faces the LEDs on

Refer to fig. 2.

 

the charger. The charger will automatically power the transmitter via the charging contacts.

 

4.Never switch the transmitter ON during the charging cycle. This may cause the charger to false- ly indicate a completed charging cycle before charging is actually completed.

 

If the transmitter has been switched ON by accident during the charging cycle,

Note:

1.

Remove the transmitter from the charger.

 

2.

Switch the transmitter OFF.

 

 

3.

Insert the transmitter into the charger.

 

The charging cycle will start automatically as soon as you insert a transmitter with a rechargeable battery into the charger.

STATUS LED

 

Status

orange

 

The voltage and temperature of the battery are being checked.

red

 

The battery is being charged.

 

 

Charging time is approx. 1.5 hours for a completely discharged bat-

 

 

tery and proportionately less for a partially discharged battery.

 

 

Charging two batteries simultaneously will extend the charging time

 

 

to 3 to 4 hours.

green

 

The battery is fully charged; the charging cycle is completed. The

 

 

charger has switched to trickle charging mode.

 

 

You may remove the transmitter from the charger.

 

 

Due to the charging process, the battery may heat up to +60°C. This

 

 

is normal.

4.3Charging Cycle

Table 2: Charging cycle

1. You may safely remove the transmitter at any time before the charging cycle is completed.

4.4 Important Notes

2.You may safely charge the battery inside the transmitter at any time, even before the battery is com- pletely discharged.

3.At ambient temperatures above +40°C, the charger may overheat. As a result, the charging cycle may take considerably longer or stop altogether (STATUS LED flashing red).

As soon as the ambient temperature drops below +40°C, the charging cycle will be resumed auto- matically (STATUS LED will be lit red).

4.If the battery heats up to more than +60°C during a charging cycle (e.g., due to high ambient tem- perature), the charging cycle will be stopped automatically (STATUS LED flashing red). Most batteries will be unusable after being heated up to more than +60°C.

5.Excessive vibrations may cause the charging cycle to be stopped (STATUS LED flashing red), restart- ed (STATUS LED is lit orange), or appear completed (STATUS LED lit green) ahead of time. Make sure

CU 400

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Contents WMS400 CU Ladestation CU Sicherheit und UmweltBeschreibung Einleitung LieferumfangLadebetrieb AnschlussReinigung Technische Daten FehlerbehebungFehler Mögliche Ursache Behebung AA size NiMH rechargeable Safety and EnvironmentIntroduction Unpacking Description Indicators DescriptionCharging Connecting to PowerTroubleshooting CleaningProblem Possible Cause Remedy FCC Statement SpecificationsSécurité et environnement Bloc secteur à fiche si mar Accus NiMH, dimension AAIntroduction Fournitures d’origine Description Processus de charge RaccordementNettoyage Caractéristiques techniques DépannageErreur Cause possible Intervention Accumulatori NiMH Sicurezza ed ambienteDescrizione Introduzione Dotazione DescrizioneEsercizio di carica CollegamentoPulizia Errore Possibile causa Rimedio Errori e rimediDati tecnici Seguridad y medio ambiente Introducción Volumen de suministrosDescripción Función de carga ConexiónLimpieza Datos técnicos Reparación de desperfectosDesperfecto Causa posible Remedio Apresentação Segurança e meio ambienteAcumuladores NiMH Processo de carga ConexãoLimpe as superfícies com um pano úmido mas não molhado LimpezaProblema Causa possível Como resolver Resolver problemasEspecificações 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.