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1 Safety and Environment
21WMS 40 SINGLE/DUAL
1.1 Safety1. Do not spill any liquids on the equipment and do not drop any objects
through the ventilation slots in the equipment.
2. The equipment may be used in dry rooms only.
3. The equipment may be opened, serviced, and repaired by authorized
personnel only. The equipment contains no user-serviceable parts.
4. Before connecting the equipment to power, check that the AC mains
voltage stated on the supplied AC adapter is identical to the AC mains
voltage available where you will use the equipment.
5. Operate the equipment with the supplied AC adapter with a 12-VDC
output. Using adapters with a different output voltage or current type
may cause serious damage to the unit.
6. If any solid object or liquid penetrates into the equipment, shut down
the sound system immediately. Disconnect the AC adapter from the
power outlet immediately and have the equipment checked by AKG
service personnel.
7. If you will not use the equipment for a long period of time, disconnect
the AC adapter from the power outlet. Please note that the equipment
will not be fully isolated from power when you set the power switch
to OFF.
8. Do not place the equipment near heat sources such as radiators, heat-
ing ducts, or amplifiers, etc. and do not expose it to direct sunlight,
excessive dust, moisture, rain, mechanical vibrations, or shock.
9. To avoid hum or interference, route all audio lines, particularly those
connected to the microphone inputs, away from power lines of any type.
If you use cable ducts, be sure to use separate ducts for the audio lines.
10.Clean the equipment with a moistened (not wet) cloth only. Be sure to
disconnect the AC adapter from the power outlet before cleaning the
equipment! Never use caustic or scouring cleaners or cleaning agents
containing alcohol or solvents since these may damage the enamel and
plastic parts.
11.Use the equipment for the applications described in this manual only.
AKG cannot accept any liability for damages resulting from improper
handling or misuse.
F
CC Statement
T
his equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Parts 74
a
nd 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a
r
esidential installation. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and
u
sed in accordance with the instructions, may cause harmful interference to radio communications. However, there is
no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interfer-
ence to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged
to try to correct the interference by one or more of the following measures:
•
Reorient or relocate the receiving antenna.
• I
ncrease the separation between the equipment and the receiver.
• C
onnect the equipment into an outlet on a circuit different from that to which the receiver is connected.
•
Consult the dealer or an experienced radio/TV technician for help.
Shielded cables and I/O cords must be used for this equipment to comply with the relevant FCC regulations.
Changes or modifications not expressly approved in writing by AKG Acoustics may void the user’s authority to operate
this equipment.
This device complies with Part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) this device
may not cause harmful interference, and (2) this device must accept any interference received, including interference
that may cause undesired operation.