3
SW-21HT
7.CAUTION - Polarization
- Do not defeat the safety purpose of the polarized or ground-
ing-type plug. A polarized plug has two blades with one wider
than the other. A grounding type plug has two blades and a
third grounding prong. The wide blade or the third prong are
provided for your safety. If the provided plug does not fit into
your outlet, consult an electrician for replacement of the obso-
lete outlet.
8. Power Cord Protection
- Protect the power cord from being walked on or pinched par-
ticularly at plugs, convenience receptacles, and the point
where they exit from the apparatus.
9. Lightning
- Unplug this apparatus during lightning storms or when un-
used for long periods of time.
10. Overloading
- Do not overload wall outlets, extension cords, or integral con-
venience receptacles as this can result in a risk of fire or elec-
tric shock.
11. Object and Liquid Entry
- Never push objects of any kind into this product through open-
ings as they may touch dangerous voltage points or short-out
parts that could result in a fire or electric shock. Never spill liq-
uid of any kind on the product.
12. Servicing
- Do not attempt to service this product yourself as opening or
removing covers may expose you to dangerous voltage or oth-
er hazards. Refer all servicing to qualified service personnel.
13. Damage Requiring Service
- Refer all servicing to qualified service personnel. Servicing is
required when the apparatus has been damaged in any way,
such as power-supply cord or plug is damaged, liquid has been
spilled or objects have fallen into the apparatus, the apparatus
has been exposed to rain or moisture, does not operate nor-
mally, or has been dropped.
14. Replacement Parts
- When replacement parts are required, be sure the service
technician has used replacement parts specified by the manu-
facturer or have the same characteristics as the original part.
Unauthorized substitutions may result in fire, electric shock, or
other hazards.
15. Safety Check
- Upon completion of any service or repairs to this product, ask
the service technician to perform safety checks to determine
that the product is in proper operating condition.
16. Heat
- Do not install near any heat sources such as radiators, heat
registers, stoves, or other apparatus (including amplifiers) that
produce heat. Do not place a flaming object, such as a candle
or lantern, or near the product.
17. Power Lines
- An outside antenna system should not be located in the vicin-
ity of overhead power lines or other electric light or power cir-
cuits, or where it can fall into such power lines or circuits. When
installing an outside antenna system, extreme care should be
taken to keep from touching such power lines or circuits as con-
tact with them might be fatal.
Notes:
Item 7 is not required except for grounded or polarized equip-
ment.
Installation
CAUTION
To assure ventilation, observe the following points when in-
stalling the unit.
• Leave a distance of more than 10 cm between the Subwoof-
er back and the surrounding wall(s). Use special care not to
cover the heat sink with a curtain, etc. when installing.
• Do not place the equipment onto a bed, a sofa, a carpet, or
similar. Sucked-in dust can cause fire.
• Be sure to install the Subwoofer vertically.
Howling
If the Subwoofer is installed near an analog record turntable, a
howling sound may be generated. If this occurs, place the Sub-
woofer farther away from the turntable or reduce the Subwoof-
er volume (By rotating the VOLUME control counter clock-
wise). The howling phenomenon may also occur due to cross
interference with a cassette deck, compact disc player, or La-
serdisc player, although this is very rare. If sound or picture
seems to be distorted due to this reason, place the Subwoofer
farther away from other components or reduce its volume.
Operation near a TV
If the Subwoofer is installed near a TV set, the TV reception
may be affected and interfered with color irregularities. Should
color irregularities observed on TV screen, separate the Sub-
woofer from the TV until its reception becomes normal.
Vertical installation
