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e 904 | 5/7

Cleaning and maintaining the e 904

Positioning the monitor loudspeakers

To prevent feedback and crosstalk, postion your monitor loudspeakers in the angle area of the 

highest cancellation of the microphone (approx. 180°).

180°

Cleaning and maintaining the e 904

CAUTION

LIQUIDS CAN DAMAGE THE ELECTRONICS OF THE PRODUCT!

Liquids entering the housing of the product can cause a short-circuit and damage the electronics.

Keep all liquids away from the product.
Do not use any solvents or cleansing agents.

Disconnect the products from the power supply system and remove rechargeable batteries and 

batteries before you begin cleaning.
Clean all products only with a soft, dry cloth.

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