Infinity PS28 User Manual

Powered Subwoofer

PS28

Owner’s Guide

(120V)

IMPORTANT SAFETY PRECAUTIONS

Read First!

1. Read these instructions.

2. Keep these instructions.

3. Heed all warnings.

4. Follow all instructions.

5. Do not use this apparatus near water.

6. Clean only with a dry cloth.

7. Do not block any ventilation openings. Install in

accordance with the manufacturer’s instructions.

8. Do not install near any heat sources such as
radiators, heat registers, stoves or other apparatus
(including amplifiers) that produce heat.

9. Do not defeat the safety purpose of the
polarized or grounding-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 is provided for your safety. If the provided
plug does not fit into your outlet, consult an
electrician for replacement of the obsolete outlet.

10. Protect the power cord from being walked on
or pinched, particularly at plugs, convenience
receptacles and the point where they exit from the
apparatus.

11. Only use attachments/accessories specified by
the manufacturer.

12. Use only with the cart, stand, tripod, bracket or
table specified by the manufacturer or sold with
the apparatus.When a cart is used, use caution
when moving the cart/apparatus
combination to avoid injury from
tip-over.

13. Unplug this apparatus during
lightning storms or when unused for
long periods of time.

14. 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 normally, or has
been dropped.

15. Do not use attachments not recommended by
the product manufacturer, as they may cause
hazards.

16. 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.

17. 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.

18. 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.

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

19. Do not overload wall outlets, extension cords,
or integral convenience receptacles, as this can
result in a risk of fire or electric shock.

20. 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.

21. The apparatus shall not be exposed to dripping
or splashing, and no objects filled with liquids,
such as vases, shall be placed on the apparatus.

22. 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.

23. 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.

24. 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.

25. The product should be mounted to a wall or
ceiling only as recommended by the manufacturer.

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PS28 (120V)

INTRODUCTION

Infinity PS28

The Infinity PS28 powered subwoofer continues Infinity’s
longstanding commitment to accurate sound reproduction. Our
proprietary technology and engineering resources work together
to deliver uncompromised low-frequency performance in any
stereo or multichannel home theater.

Unpacking the Subwoofer

If you suspect damage from transit, report it immediately to your
dealer. Keep the shipping carton and packing materials for
future use.

PLACEMENT

Since the installation of a subwoofer can be somewhat more
complicated than installing full-range speakers, it is essential
that you read this section very carefully prior to connecting the
subwoofer to your system. Should you have questions relating
to your installation, it is advisable to call your dealer or visit
www.infinitysystems.com for assistance.

The performance of the subwoofer is directly related to its
placement in the listening room and how you align the subwoofer
with its satellite speakers. Setting the volume of the subwoofer
in relationship to the left and right speakers is also of critical
importance because it is essential that the subwoofer integrate
smoothly with the entire 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 facts on installation that may prove
useful. It is generally believed by most audio authorities that low
frequencies (below 125Hz) are nondirectional and, therefore,
placement of a subwoofer within any listening room is not
critical. While in theory it is true that the larger wavelengths of
extremely low frequencies are basically nondirectional, the fact
is that, when installing a subwoofer within the limited confines of
a room, reflections, standing waves and absorptions generated
within the room will strongly influence the performance of any
subwoofer system.As a result, specific location of the subwoofer
becomes important, and we strongly recommend that you
experiment with placement before choosing a final location.

Placement will depend upon your room and the amount and
quality of bass required (for example, whether or not your room
permits placement of the subwoofer near either satellite). Be
sure to leave a minimum of six inches between the wall and the
port on the subwoofer.

SUB

RIGHT­CHANNEL

SPEAKER

PRIMARY
LISTENING
AREA

Figure 1.This example shows the subwoofer positioned behind
the right-channel satellite speaker to re-create the actual
location of bass instruments in an orchestra and/or add impact
to movie soundtracks.

PS28 (120V)

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