Infinity ENTRA User manual

Owner’s Guide
•Entra One
•EntraTwo
•EntraThree
•Entra Center
•Entra CenterTwo
ENTRA®SPEAKER SYSTEMS

Infinity Entra Series
The Entra Series of loudspeakers continues Infinity’s
longstanding commitment to accurate sound reproduction.
Our patented Ceramic Metal Matrix Diaphragm™(C.M.M.D.
™)
drivers,precision dividing networks,and rigid,well-braced
enclosures combine to deliver uncompromised performance in
any stereo or multichannel home-theater system.In addition,
Entra Series speakers are magnetically shielded for safe
placement adjacent to a television.
If you suspect damage from transit,report it immediately to
your dealer.Keep the shipping carton and packing materials
for future use.
Stereo
Before deciding where to place your Entra speakers,survey your
room and think about placement,keeping the following points
in mind,using Figure 1 as a guide:
•For best results,place the speakers 6'–8' apart.
•Position each speaker so that the tweeter is approximately at
ear level.
•Generally,bass output will increase as the speaker is moved
closer to a wall or corner.
•Refer to“HomeTheater”below if you also plan to use the
speakers for home-theater reproduction.
HomeTheater
For front-channel use,place one speaker on the left and another
on the right along either side of the television monitor.Since the
speakers are magnetically shielded,you can place them without
worrying about the field distorting theTV picture.
Forrear-channel use,place Entra One speakers on bookshelves
or stands – or Entra floorstanding speakers on the floor –
alongside the listening position.Final placement depends on
room acoustics,availability of space and your listening
preference (Figure 2).
The center channel speaker should be placed on top of or
directly below the television and aimed towards the listening area.
NOTE:An Infinity powered subwoofer will add impact and
realism to both music and film soundtracks.Contact your Infinity
dealer for recommendations on subwoofer models for your
application.
PLACEMENT
UNPACKING THE SPEAKERS
FIGURE 1
Listening Position
Left
Channel Right Channel
Couch
Left
Front
Channel
Left
Surround
Channel
Right
Surround
Channel
Right
Front
Channel
Center
Channel
Infinity Subwoofer
(optional)
– Experiment with speaker placement to obtain the
best bass level and stereo imaging in your room.
FIGURE 2–This overhead view shows a typical home-theater
plan.
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Couch
Left
Front
Channel
Left
Surround
Channel
Right
Surround
Channel
Right
Front
Channel
Center
Channel
Infinity Subwoofer
(optional)
FIGURE 3–This figure shows an alternate layout,which may
be more suitable for some rooms.

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EntraTwo and EntraThree
Refer to Figure 4 as you perform the following steps:
1. The EntraTwo and EntraThree come with the round end of
their feet exposed for use on hard-surface floors.To expose
the spiked end of the feet,lay each speaker on its side and
use the enclosed wrench to unscrew and remove the four
feet.Screw the round end of each foot into its hole and
hand-tighten a nut onto each foot.Leave a minimum of 5/8"
of exposed spike.(On thicker carpets,you can increase the
length of exposed spike up to 1-1/8.")
2. Carefully stand each speaker upright to sit on its feet.
3. If needed,adjust the feet so each speaker is level and then
tighten each nut with the enclosed wrench.
INSTALLING SPIKED FEET
Nylon Dome
(optional for
wood floors)
Locking Nut
HARD-SURFACE
FLOORS
CARPETED
FLOORS
Foot
round end
spike end
Bottom
of Speaker
5⁄8"
5⁄8" min.
11⁄8"max.
FIGURE 4–This cross section shows how to install a foot
onto the bottom of an Entra floorstanding speaker.

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LOOSEN TERMINALS
INSERT BARE END;
TIGHTEN TERMINALS
1.
2.
BLACK = –
NO STRIPE = –STRIPE = +
RED = +
+–
Receiver or
Amplifier
(rear view)
Speaker (rear view)
(one channel shown)
+
–
REDBLACK
WIRING THE SYSTEM
FIGURE 5–This example shows how to connect bare wires to the
terminals.Banana plugs may also be inserted directly into the rear of the
connector.
IMPORTANT: Make sure all equipment is turned off before
making any connections.
For speaker connections,use a minimum #16-gauge speaker
wire with polarity coding.The side of the wire with a ridge or
other coding is usually considered positive polarity (i.e.,+).
NOTE: If desired,consult your local Infinity dealer about speaker
wire and connection options.
The speakers have coded terminals that accept a variety of wire
connectors.The most common connection is shown in Figure 5.
To ensure proper polarity,connect each +terminal on the back
of the amplifier or receiver to the respective +(red) terminal on
each speaker,as shown in Figure 6.Connect the –(black)
terminals in a similar way.See the owner’s guides that were
included with your amplifier,receiver and television to confirm
connection procedures.
IMPORTANT: Do not reverse polarities (i.e.,+ to –or –to +)
when making connections.Doing so will cause poor imaging and
diminished bass response.
FIGURE 6–Wiring diagram shows polarity connections for one
channel of a stereo or home theater system.

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Check the speakers for playback first by setting the system
volume control to a minimum level,and then by applying power to
your audio system.Play a favorite music or video segment and
increase the system volume control to a comfortable level.
NOTE:You should hear balanced audio reproduction across the
entire frequency spectrum.If not,check all wiring connections or
consult the authorized Infinity dealer from whom you purchased
the system for more help.
The amount of bass you hear and the stereo-image quality will be
affected by a number of different factors,including the room’s
size and shape,the construction materials used to build the
room,the listener’s position relative to the speakers,and the
position of the speakers in the room.
Listen to a variety of music selections and note the bass level.
If there is too much bass,move the speakers away from nearby
walls.Conversely,if you place the speakers closer to the walls,
there will be more bass output.
Nearby reflecting surfaces can adversely affect stereo-imaging
quality.If this happens,try angling the speakers slightly inward
toward the listening position until the optimum effect is achieved.
Each Entra Series cabinet has a wood-grain-vinyl finish that
does not require any routine maintenance.When needed,use
a soft cloth,dampened with water only,to remove any
fingerprints or dust.
Clean the grille by gentle vacuuming.
NOTE: Do not use any cleaning products or polishes on the
cabinet or grille.
FINAL ADJUSTMENTS
CARE OF YOUR SPEAKER SYSTEM

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Entra One EntraTwo EntraThree
Frequency Range: 60Hz – 20,000Hz (±3dB) 50Hz – 20,000Hz (±3dB) 40Hz – 20,000Hz (±3dB)
Recommended
Amplifier Power Range: 15 – 125 watts 15 – 125 watts 15 – 150 watts
Sensitivity: 89dB 90dB 91dB
(2.83V @ 1 meter)
Nominal Impedance: 8Ω8Ω8Ω
Crossover Frequency: 2500Hz;24dB/octave 2500Hz;24dB/octave 2000Hz;24dB/octave
Low-Frequency Driver: 6-1/2" (165mm) C.M.M.D., 6-1/2" (165mm) C.M.M.D., Dual 6-1/2" (165mm) C.M.M.D.,
magnetically shielded magnetically shielded magnetically shielded
High-Frequency Driver: 3/4" (19mm) C.M.M.D., 3/4" (19mm) C.M.M.D., 3/4" (19mm) C.M.M.D.,
magnetically shielded magnetically shielded magnetically shielded
Dimensions (H xW x D): 15" x 8-1/2"x 9-3/4" 31-3/4" x 8-1/2"x 9-3/4" 37-1/2" x 8-1/2"x 12-3/4"
(381mm x 216mm x 248mm) (806mm x 216mm x 248mm) (953mm x 216mm x 324mm)
Weight: 14 lb (6.4kg) 24 lb (11kg) 38 lb (17.3kg)
Infinity continually strives to update and improve existing products,as well
as create new ones.The specifications and construction details in this and
related Infinity publications are therefore subject to change without notice.
SPECIFICATIONS
Declaration of Conformity
We, Harman Consumer International
2, route de Tours
72500 Chateau-du-Loir
France
declare in own responsibility, that the products described
in this owner’s manual are in compliance with technical
standards:
EN 50081-1:1992
EN 50082-1:1997
Robin Marshall
Harman Consumer International
Chateau-du-Loir, FRANCE. 3/02
Entra Center Entra CenterTwo
Frequency Range: 95Hz – 20,000Hz (±3dB) 80Hz – 20,000Hz (±3dB)
Recommended
Amplifier Power Range: 15 – 125 watts 15 – 150 watts
Sensitivity: 89dB 90dB
(2.83V @ 1 meter)
Nominal Impedance: 8Ω8Ω
Crossover Frequency: 2500Hz;24dB/octave 2000Hz;24dB/octave
Low-Frequency Driver: Dual 4" (102mm) C.M.M.D., Dual 5-1/4" (133mm) C.M.M.D.,
magnetically shielded magnetically shielded
High-Frequency Driver: 3/4" (19mm) C.M.M.D., 3/4" (19mm) C.M.M.D.,
magnetically shielded magnetically shielded
Dimensions (H xW x D): 6-1/2" x 17"x 5-1/4" 7-1/2" x 20-1/2"x 7-1/4"
(165mm x 432mm x 133mm) (191mm x 521mm x 184mm)
Weight: 12 lb (5.5kg) 18 lb (8.2kg)

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Notes:

© 2002 Infinity Systems
250 Crossways Park Drive,Woodbury,NY 11797 USA
800.553.3332 (USA Only) www.infinitysystems.com
Infinity is a registered trademark of Infinity Systems Printed in USA 6/02 Part No.336422-003