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ENTRA SUB TWO

Read First!

1. Read Instructions.

All the safety and operating

instructions should be read before the product 
is operated.

2. Retain Instructions.

The safety and operating

instructions should be retained for future reference.

3. Heed Warnings.

All warnings on the product and in

the operating instructions should be adhered to.

4. Follow Instructions.

All operating and use

instructions should be followed.

5. Cleaning.

Unplug this product from the wall outlet

before cleaning. Do not use liquid cleaners or aerosol
cleaners. Use a damp cloth for cleaning.

6. Attachments.

Do not use attachments not

recommended by the product manufacturer,
as they may cause hazards.

7. Water and Moisture.

To reduce the risk of fire or

electric shock, do not use this product outdoors or
near water–for example, near a bathtub, wash bowl,
kitchen sink or laundry tub; in a wet basement; near a
swimming pool; or the like.

8. Accessories.

Do not place this product on an

unstable cart, stand, tripod, bracket or table. The
product may fall, causing serious injury to a child or
adult, and serious damage to the product. Use only
with a cart, stand, tripod, bracket or table
recommended by the manufacturer, or sold with the
product. Any mounting of the product should follow the
manufacturer’s instructions, and should use a mounting
accessory recommended by the manufacturer.

9. A Product and Cart Combination Should
Be Moved with Care.

Quick stops, excessive

force and uneven surfaces may cause the
product and cart combination to overturn.

10. Ventilation.

Slots and openings in the cabinet are

provided for ventilation and to ensure reliable
operation of the product and to protect it from
overheating, and these openings must not be blocked
or covered. The openings should never be blocked by
placing the product on a bed, sofa, rug or other
similar surface. This product should not be placed in a
built-in installation, such as a bookcase or rack,

unless proper ventilation is provided or the
manufacturer’s instructions have been adhered to.

11. Power Sources.

This product should be operated

only from the type of power source indicated on the
marking label. If you are not sure of the type of power
supply to your home, consult your product dealer or
local power company. For products intended to operate
from battery power, or other sources, refer to the
operating instructions.

12. Grounding or Polarization.

This product may be

equipped with a polarized alternating-current-line plug
(a plug having one blade wider than the other). This
plug will fit into the power outlet only one way.This is
a safety feature. If you are unable to insert the plug
fully into the outlet, try reversing the plug. If the plug
should still fail to fit, contact your electrician to
replace your obsolete outlet. Do not defeat the safety
purpose of the polarized plug.

13. Power-Cord Protection.

Power-supply cords should

be routed so that they are not likely to be walked on or
pinched by items placed upon or against them, paying
particular attention to cords at plugs, convenience
receptacles, and the point where they exit from the
product.

14. Nonuse Periods.

The power cord of the product

should be unplugged from the outlet when left unused
for long periods of time.

15. Outdoor Antenna Grounding.

If an outside antenna

or cable system is connected to the product, be sure
the antenna or cable system is grounded so as to
provide some protection against voltage surges and
built-up static charges. Article 810 of the National
Electrical Code, ANSI/NFPA 70, provides information
with regard to proper grounding of the mast and
supporting structure, grounding of the lead-in wire to
an antenna discharge unit, size of grounding
conductors, location of antenna-discharge unit,
connection to grounding electrodes, and requirements
for the grounding electrode. See Figure A.

16. Lightning.

For added protection for this product

during a lightning storm, or when it is left unattended
and unused for long periods of time, unplug it from
the wall outlet and disconnect the antenna or cable
system. This will prevent damage to the product due to
lightning and power-line surges.

17. Power Lines.

An outside antenna system should not

be located in the vicinity of overhead power lines or
other electric light or power circuits, 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 contact with them might be fatal.

18. Overloading.

Do not overload wall outlets, extension

cords, or integral convenience receptacles, as this can
result in a risk of fire or electric shock.

19. Object and Liquid Entry.

Never push objects of any

kind into this product through openings, as they may
touch dangerous voltage points or short-out parts that
could result in a fire or electric shock. Never spill
liquid of any kind on the product.

20. Servicing.

Do not attempt to service this product

yourself, as opening or removing covers may expose
you to dangerous voltage or other hazards. Refer all
servicing to qualified service personnel.

21. Damage Requiring Service.

Unplug this product

from the wall outlet and refer servicing to qualified
service personnel under the following conditions:
a. The power-supply cord or the plug has been
damaged; or
b. Objects have fallen onto, or liquid has been spilled
into, the product; or
c. The product has been exposed to rain or water; or
d. The product does not operate normally when
following the operating instructions. Adjust only those
controls that are covered by the operating instructions,
as an improper adjustment of other controls may
result in damage and will often require extensive work
by a qualified technician to restore the product to its
normal operation; or
e. The product has been dropped or damaged
in any way; or
f. The product exhibits a distinct change in
performance; this indicates a need for service.

22. Replacement Parts.

When replacement parts are

required, be sure the service technician has used
replacement parts specified by the manufacturer or
that have the same characteristics as the original
part. Unauthorized substitutions may result in fire,
electric shock or other hazards.

23. 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.

24. Wall or Ceiling Mounting.

The product should be

mounted to a wall or ceiling only as recommended by
the manufacturer.

25. Heat.

The product should be situated away 

from heat sources such as radiators, heat registers,
stoves or other products (including amplifiers) that
produce heat.

Antenna Lead-In Wire

Ground Clamp

Antenna Discharge Unit (NEC Section 810-20)

Grounding Conductors (NEC Section 810-21)

Electric Service Equipment

Ground Clamps

Power Service Grounding Electrode System
(NEC Art. 250, Part H) 

Figure A.
Example of Antenna Grounding as per
National Electrical Code ANSI/NFPA 70

I

MPORTANT

S

AFETY

P

RECAUTIONS

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION: To prevent electric shock,

 do not use this (polarized) 

plug with an extension cord, 

receptacle or other outlet 

unless the blades can 

be fully inserted to 

prevent blade exposure.

The lightning flash with arrowhead symbol, 
within an equilateral triangle, is intended to 
alert the user to the presence of uninsulated 

“dangerous voltage” within the product’s 

enclosure that may be of sufficient magnitude to constitute a 
risk of electric shock to persons.

The exclamation point within an equilateral 
triangle is intended to alert the user to the 
presence of important operating and 
maintenance (servicing) instructions in the 

literature accompanying the appliance.

Summary of Contents for ENTRA SUB TWO

Page 1: ...Owner s Guide ENTRA SUB TWO...

Page 2: ...trodes and requirements for the grounding electrode See Figure A 16 Lightning For added protection for this product during a lightning storm or when it is left unattended and unused for long periods o...

Page 3: ...re system Setting the subwoofer s volume level too high will result in an overpowering boomy bass Setting the volume level too low will negate the benefits of the subwoofer Here are several additional...

Page 4: ...IN HIGH LEVEL OUT 120V 60Hz OFF WARNING TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE AVERTISSEMENT POUR PR VENIR LES RISQUES D INCENDIE OU DE CHOC L...

Page 5: ...TION RISK OF ELECTRIC SHOCK DO NOT OPEN WARNING TO REDUCE THE RISK OF FIRE OR ELECTRICAL SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE AVERTISSEMENT POUR PR VENIR LES RISQUES D INCENDIE OU DE...

Page 6: ...s impact on bass response is always there but never obtrusive Phase Control The Phase switch determines whether the subwoofer speaker s piston like action moves in and out with the main speakers 0 or...

Page 7: ...y variable High Pass Frequency 150Hz Speaker Level Output Only Driver 12 C M M D Dimensions H x W x D 17 x 15 3 8 x 19 3 8 432mm x 391mm x 492mm Weight 47 lb 21 4kg Infinity continually strives to upd...

Page 8: ...2 USA only www infinitysystems com Trademark of Dolby Laboratories DTS is a registered trademark of Digital Theater Systems Inc Infinity is a registered trademark and Ceramic Metal Matrix Diaphragm pa...

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