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.

2ENTRA

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.

ENTRA

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.

4ENTRA

LOOSEN TERMINALS

INSERT BARE END;

TIGHTEN TERMINALS

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.

ENTRA

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

6ENTRA

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)

ENTRA

Notes:

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

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