5Battery or accupack operation8Connecting the headphones
The EK 3053-U can be powered by either batteries or rechargeableConnect the headphones to the 3.5 mm ? stereo jack on the EK
accupacks. We recommend using a 9 V PP3 battery (IEC 6 LR 61). If3053-U. If you use the receiver as part of the in-ear monitoring system,
powered by a 9 V PP3 battery, the receiver has an operating time ofplease connect in-ear headphones. If you use the receiver for other
approx. five hours with the volume set to a medium value. Since theapplications, you can also connect any Sennheiser stereo headphones.
power consumption depends to a large extent on the volume adjustment
on the EK 3053-U, the operating time will be reduced by up to 30 % ifNote
the volume is set to a high value. The operating time can be increasedOnly connect headphones with a stereo jack plug to the
by up to 20 % if you choose a low volume. If the receiver is operated3.5 mm ? stereo jack !
with a rechargeable 9 V accupack, the operating time will be reduced
to less than two hours.
9Setting the receiving frequency
6Inserting / Changing the battery
Slide back the coverplate . Use the channel selector switch to set
Slide the cover of the battery compartment
towards the bottom sidethe desired receiving frequency. The assignment of a switch position to
of the receiver, then open the cover. Insert the 9 V PP3 battery as showna frequency is listed on the type plate on the back of the receiver. Up to
above. Close the battery compartment by carrying out the operating
16 receiving frequencies are available.
steps in reverse order.
To remove the battery, push the small lever in the battery
compartment towards the bottom side of the receiver.
Note
NoteTransmitter and receiver must be set to the same
Please observe correct polarity when inserting the battery!frequency!
7Connecting the antenna10 Switching the receiver on
Turn the volume control clockwise (the volume control has an inte-
Screw the supplied antenna onto the Lemo socket - on the EK 3053-
gral on/off switch - the receiver is switched off when the control isU.
turned fully anti-clockwise until it clicks).
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