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Crescendo 

duo

 – Manual

Crescendo 

duo

 – Manual

6

7

EN

DE

Security Advices

Before starting up the device:

• Read thoroughly and follow the security advices.

• Read thoroughly and follow the Quickstart.

• Observe all warning instructions on the device.

• Please keep the user manual as well as the security 

advices in a safe place for future reference.

 Warning

Always follow the security advices listed below to avoid 

serious injuries or even deadly accidents due to electric 

shocks, short circuit, fire or other dangers. The following 

are examples of such risks and do not represent an 

exhaustive list:

Power supply/Power cord

Do not place the power cord near heat sources such 

as heaters or radiators and do not excessively bend or 

otherwise damage the cord, do not place heavy objects 

on it, or place it in a position where anyone could walk 

on, trip over, or roll anything over it.

Only use the voltage indicated on the device. 

Only use the supplied power cord/plug.

If you intend to use the device in an area other than in 

the one you purchased it, the included power cord may 

not be compatible. In this case please contact your 

dealer.

Be sure to connect the device to an appropriate mains 

socket outlet with a protective grounding connection. 

Improper grounding can cause electrical shock.

Do not open

This device contains no user-serviceable parts. Do not 

open the device or attempt to disassemble the internal 

parts or modify them in any way. If it should appear to be 

malfunctioning, turn off the power immediately, unplug 

the power cord from the mains socket outlet and have it 

inspected by a qualified professional.

Water warning

Do not expose the device to rain, or use it near water 

or in damp or wet conditions, or place anything on it 

(such as vases, bottles or glasses) containing liquids 

which might spill into any openings. If any liquid such as 

water seeps into the device, turn off the power immedi-

ately and unplug the power cord from the mains socket 

outlet. Then have the device inspected by a qualified 

professional.

Never insert or remove an electric plug with wet hands.

Fire warning

Do not put burning items, such as candles, on the unit. 

A burning item may fall over and cause a fire.

Lightning

Before thunderstorms or other severe weather, discon-

nect the device from the mains socket outlet; do not 

do this during a storm in order to avoid life threatening 

lightning strikes. Similarly, disconnect all the power 

connections of other devices, antenna and phone/

network cables which may be interconnected so that no 

damage results from such secondary connections.

If you notice any abnormality

When one of the following problems occur, immediately 

turn off the power switch and disconnect the electric 

plug from the mains socket outlet. Then have the device 

inspected by a qualified professional.

• The power cord or plug gets frayed or damaged.

• The device emits unusual smells or smoke.

• An object has fallen into the unit.

• There is a sudden loss of sound during the use of the 

the device.

 Caution

Always follow the basic precautions listed below to 

avoid the possibility of physical injury to you or others, 

or damage to the device or other property. These 

precautions include, but are not limited to, the following:

Power supply/Power cord

When removing the electric plug from the device or an 

mains socket outlet, always pull on the plug itself and 

not the cord. Pulling the cord may damage it. 

Unplug the device from the mains socket outlet when 

the device is not used for a while.

Location

Do not place the device in an unstable position where it 

might accidentally fall over.

Do not block the vents. This device has ventilation holes 

to prevent the internal temperature from rising too 

high. In particular, do not place the device on its side 

or upside down. Inadequate ventilation can result in 

overheating, possibly causing damage to the device or 

even fire.

Do not place the device in a location where it may come 

into contact with corrosive gases or salty air. This may 

result in malfunction.

Before moving the device, remove all connected cables.

When setting up the device, make sure that the mains 

socket outlet you are using is easily accessible. If some 

trouble or malfunction occurs, immediately turn off the 

power switch and disconnect the plug from the mains 

socket outlet. Even when the power switch is turned off, 

electricity is still flowing to the product at a minimum 

rate. When you are not using the device for a long time, 

make sure to unplug the power cord from the wall mains 

socket outlet.

Connections

Before connecting the device to other devices, power 

down all devices. Before power on or off the devices, set 

all volume levels to minimum.

Only use appropriate cables to connect the device with 

other devices. Make sure that the cables you use are 

intact and comply with the electrical specifications of 

the connection. Other connections can lead to health 

risks and damage the equipment.

Handling

Operate the controls and switches only as described in 

the manual. Incorrect adjustments outside safe para-

meters can lead to damage. Never use excessive force 

on the switches or controls.

Do not insert your fingers or hands in any gaps or open-

ings of the device.

Avoid inserting or dropping foreign objects (paper, 

plastic, metal, etc.) into any gaps or openings of the 

device. If this happens, power down immediately and 

unplug the power cord from the mains socket outlet. 

Then have the device inspected by a qualified profes-

sional. 

Do not expose the device to excessive dust or vibrations 

or extreme cold or heat (such as direct sunlight, near a 

heater or in a car during the day) to prevent the possi-

bility of causing damage to the housing, the internal 

components or unstable operation.

If the ambient temperature of the device suddenly 

changes, condensation can occur (if for example the 

device is relocated or is affected by a heater or air condi-

tioning).

Using the device while condensation is present may 

result in malfunction. Do not power on the device for a 

few hours until the condensation is gone. Only then it is 

safe to power on.

Cleaning

Disconnect the device from your mains socket outlet 

before cleaning.

Do not use any solvents, as these can damage the 

chassis finish. Use a dry cloth, if necessary, with an 

acid-free cleaning oil. 

Disclaimer

Windows

®

 is a registered trademark of Microsoft

®

 

Corporation in the United States and other countries.

Apple, Mac and Macintosh are trademarks of Apple Inc., 

registered in the U.S. and other countries.

The company names and product names in this manual 

are the trademarks or registered trademarks of their 

respective companies.

SPL and the SPL Logo are registered trademarks of SPL 

electronics GmbH.

SPL cannot be held responsible for damage caused by 

improper use or modification of the device or data that 

is lost or destroyed.

Notes on Environmental Protection

At the end of its operating life, this product 

must not be disposed with regular household 

waste but must be returned to a collection 

point for the recycling of electrical and elec-

tronic equipment. 

The wheelie bin symbol on the product, user manual 

and packaging indicates that. 

For proper treatment, recovery and recycling of old 

products, please take them to applicable collection 

points in accordance with your national legislation and 

the Directives 2012/19/EU.

The materials can be reused in accordance with their 

markings. Through reuse, recycling of raw materials, or 

other forms of recycling of old products, you are making 

an important contribution to the protection of our envi-

ronment. 

Your local administrative office can advise you of the 

responsible waste disposal point. 

This directive only applies to countries inside the EU. 

If you wish to discard devices outside the EU, please 

contact your local authorities or dealer and ask for the 

correct method of disposal. 

WEEE-Reg-No.: 973 349 88

Summary of Contents for Crescendo duo

Page 1: ...Crescendo duo 120V Two Channel Microphone Preamplifier EN Manual Find more information spl audio DE...

Page 2: ...and therefore provide Class A operation with more than 6mA quiescent current Start up Read the security advices on page 6 Make sure that the selected mains voltage of the Crescendo duo is according to...

Page 3: ...for condenser microphones can be activated with the 48V switch If phantom power is on the 48V LED lights up blue IMPORTANT Use phantom power only for condenser microphones For all other microphone typ...

Page 4: ...ly causing damage to the device or even fire Do not place the device in a location where it may come into contact with corrosive gases or salty air This may result in malfunction Before moving the dev...

Page 5: ...Crescendo duo Manual 8 2020 SPL electronics GmbH spl audio EN DE Crescendo duo Zweikanaliger 120V Mikrofonvorverst rker Bedienungsanleitung Weitere Informationen spl audio...

Page 6: ...fen arbeiten als Stromverst rker welche mit ber 6mA Ruhe strom reinen Class A Betrieb bieten Inbetriebnahme Lesen Sie die Sicherheitshinweise auf Seite 14 Stellen Sie sicher dass die eingestellte Netz...

Page 7: ...kann mithilfe des 48V Schalters aktiviert werden Bei eingeschalteter Phantomspeisung leuchtet die 48V LED blau WICHTIG Die Phantomspeisung nur f r Kondensatormikrofone einschalten F r alle anderen Mi...

Page 8: ...f die Seite oder auf den Kopf Unzu reichende Bel ftung kann zu berhitzung f hren und u U das Ger t besch digen oder sogar einen Brand ausl sen Platzieren Sie das Ger t nicht an einem Ort an dem es in...

Page 9: ...Crescendo duo Bedienungsanleitung 16 2020 SPL electronics GmbH spl audio 2003...

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