5 Connections and controlsCAUTION!Possible hearing damageMaking music for a prolonged period and at high volume can causehearing damage.Avoid playing the unit at full volume, especially when using head‐phones.Before connecting amplifier or headphones, the rotary control [VOLUME]must be set to ‘Minimum’ and the preamp switch [ON | OFF] must be set to‘ON’. This avoids loud crack noises when switching on.5.1 Connecting and inserting the batteryOn delivery of the instrument, a suitable battery is enclosed.Before connecting the battery, drag out the endpin of the instrument so far that thebattery compartment cover can be opened (Ä Chapter 4.1 ‘Setting the height’on page 9).To open the battery compartment cover, slightly push the locking mechanisminwards with a finger.Clamp the power cable with the correct polarity to the battery. Insert the battery intothe battery compartment and close the battery compartment cover. It must audiblyclick into position.Then re-align the endpin to your playing position (Ä Chapter 4.1 ‘Setting the height’on page 9).NOTICE!Possible damage by leaking batteriesLeaking batteries can cause permanent damage to the device.Take batteries out of the device if it is not going to be used for a longerperiod.Connections and controlselectric upright bass12