Atlantic Technology System 350 THX Manuale utente

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Models

351 LR

353 C

354 SR

System 350

THX

High Performance

Home Theater Loudspeaker System

TECHNOLOGY

tlantic

Instruction

Manual

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TECHNOLOGY

tlantic

Models 351 LR, 353 C, and 354 SR

System 350 THX

High Performance Home Theater

Loudspeaker System

Congratulations on choosing Atlantic Technology Home Theater Components. The

System 350 THX is engineered to bring you as close as possible to the acoustic

environment of the finest THX theaters. hen properly set up and balanced, the

Atlantic Technology THX speaker system, coupled with THX ancillary components,

allows you to fully experience movies at home the way filmmakers intended.

Conventional high fidelity loudspeaker systems, even very expensive ones, are not

ideally suited to the demands of multichannel movie soundtracks. In order for the

speakers to accurately reproduce what the film director created on the dubbing stage,

they must meet specific design parameters developed by

the motion picture industry. To achieve this, George

Lucas and Lucasfilm originated and perfected Home

THX, a strict set of standards and guidelines for home

theaters, so that they may emulate the original dubbing

stage. hen properly followed, these guidelines address

and correct the problems of overly bright or harsh

soundtracks, unintelligible dialog, and poor localization of sounds. ith Atlantic

Technology’s System 350 High Performance THX Home Theater Loudspeakers you will

experience all the impact, full frequency response, and enveloping soundfield of your

favorite films for the first time.

The Model 351 LR Front Channel Speakers incorporate two 5-3/4" polypropylene

woofers in a D’Appolito configuration with two 3" midrange drivers and a 1" ferrofluid-

cooled fabric dome neodymium tweeter in a separate sub-enclosure. The crossover is a

premium fourth-order design with a conjugate network. Gold 5-way binding posts are

provided to ensure easy connection with a wide variety of speaker cables. The tall,

narrow dimensions of the cabinet, together with the driver configuration, optimizes

horizontal dispersion and vertical directivity so important to the proper reproduction

of the soundstage.

The Model 353 C Center Channel Speaker features the same driver complement,

crossover, and cabinet volume as the 351 LR making left to center to right pans virtually

seamless. The horizontal dispersion and vertical directivity characteristics of the speaker

are maintained by using a D’Appolito configuration of two 3" midranges and 1" tweeter

identical to the 351 LR. A tiltable base was developed to provide a variety of placement

options either above or below the picture source without compromising performance.



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TECHNOLOGY

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Models 351 LR, 353 C, and 354 SR

The Model 354 SR Surround Speakers feature a triangular cabinet design providing

a superior surround field compared to standard dipole or bipole surround speaker

configurations. Our proprietary TwinPolar™ driver array provides exceedingly wide

dispersion without the dipole “dead spots” so common with other designs. The 54 SR

features two 4" polypropylene woofers and two /4" mylar dome tweeters to handle the

full dynamic range and bandwidth of any existing or newly emerging surround sound

technology. A second-order premium crossover and gold 5-way binding posts insure

signal integrity.

The Model 352 PBM Powered Subwoofer utilizes a new generation of subwoofer

amplifier specifically designed to deliver very high output on a continuous basis, with

no danger of overload or distortion. The high excursion 12" woofer and sealed acoustic

suspension cabinet configuration allow for extended, deep bass in a relatively compact,

room-friendly design. The prodigious amounts of low frequency energy required for

proper THX operation and the demands of high performance home theater applications

in general are easily met with the 52 PBM. (Operation and placement of the Model

52 PBM is covered in a separate manual.)

Important: Two 352 PBM Subwoofers are required for proper TH performance. The use of

two subwoofers provides the most installation flexibility, tends to smooth bass response, and

supplies higher sound pressure levels with ease.

Connection

We recommend that you connect your new System 50 THX speaker components using

high quality wire of 16 gauge or larger for lengths up to 25 feet. There are many

manufacturers who specialize in speaker wire and interconnects suitable for your new

system. We recommend that you consult your local audio/video specialist for more

specific information.

Warning: To prevent risk of electrical shock or damage to your equipment, always unplug all

component AC cords before proceeding with speaker and component connections.

You can connect your System 50 THX speakers by

using spade lugs or “banana” connectors, or by

removing 1/2" of insulation from each wire end,

twisting the strands of wire together, placing the wire

through one of the post holes and screwing down the

nut tightly.

It is important to observe polarity while making

speaker connections: red (+) terminals on the amplifier to red (+) on the speaker, black

(-) on the amplifier to black (-) on the speaker. Look carefully at the wires you are using

Figure 1:

Speaker Wiring

Terminals

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TECHNOLOGY

tlantic

Models 351 LR, 353 C, and 354 SR

and note that one of the wires in each pair is marked by either a different color,

printing, ridges, or a thread intertwined with the wire strands. By convention, the

marked wire is connected to the red (+) terminal.

Whether your are connecting a complete System 50 THX, or adding one speaker

component to your present system, the wiring should look like the diagram in Figure 2.

Before turning on the amplifier, be certain that no stray wire strands are touching across

the two terminals as this might damage your amplifier.

Figure 2:

Typical wiring

diagram for

speakers in a

home theater

Note that two

352 PBM

Subwoofers are

shown in this

diagram in order

to conform with

THX specifications

Please consult the

352 PBM Owner’s

Manual for more

detailed

information

Finally, check the polarity of your front speakers by listening to some music. If the

sound seems hollow, spread out and has weak bass, recheck your connections for proper

polarity and reverse the connections if necessary.

Placement

The design of the System 50 THX provides a large, seamless, acoustically accurate

soundfield when combined with quality THX components to make a complete audio/

video system. However, certain guidelines must be followed to obtain optimum

performance. Use the following placement guidelines and Figure as a starting point.

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TECHNOLOGY

tlantic

Models 351 LR, 353 C, and 354 SR

THX Home Theater

Position the Model 351 LR Front Speakers vertically to the left and right of the

screen. For optimum performance, the height of the speakers should place the tweeters

at ear level when you are in a seated position. All of the System 350 HX speakers are

magnetically shielded and will not interfere with the video image. he left front and

right front speakers should be far enough apart that you get a good stereo image, but

not so far apart that the sound seems distant and distracting. Avoid placing the speakers

too close to a corner and try to maintain an equal distance from the screen.

he Model 353 C Center Channel Speaker should be placed horizontally on its

base between the left and right front speakers and above or below the screen. ilt the

speaker on its adjustable base to direct the sound toward the listening position. Ideally,

the center channel speaker should be placed within two feet of the axis of the front

channel tweeters. his placement is less important because of the directability of the

353 C on its tiltable base.

he Model 354 SR Surround Speakers should be placed at the sides of the room

with the null (the point between the two sets of drivers) of the speakers pointed at the

listening position. Height of the surrounds should be between ear level and two feet

above ear level, or on the optional pedestal stands. If there is more than one row of

seats, the surround speakers should be at the sides of the room at the geometrical center

of the seating positions. Due to the extremely wide dispersion design of the 354 SR, the

speaker will perform well outside of the shaded area shown below. his illustration

shows the ideal speaker placement for maximum performance of the system.

Figure 3:

Typical arrange-

ment for speakers

in a TH home

theater. For best

results, place the

surround speakers

within the shaded

areas.

Null point of surround

speaker in line with

listening position

Center channel should be within

2' of front speaker tweeter height

Surround

speaker

should be

no closer

than 2'

from the

ceiling

Ear level

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TECHNOLOGY

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Models 351 LR, 353 C, and 354 SR

Mounting

The Model 351 LR and the 354 SR speakers can be mounted in a variety of ways

On the wall. To flush mount your speakers on the wall, we have installed steel keyhole

brackets on the back panel of the cabinet, spaced 12" (305mm) apart. Simply place the

opening of the bracket over suitably secured wall anchors (such as molly-bolts), or

screws driven into wall studs. Remember to mount the speakers so that the tweeters are

at ear level.

On optional pedestal stands. The pedestal stands are provided with complete

instructions and all necessary hardware. These stands position the speakers at the

proper height, allow placement flexibility, and provide a stable base for a variety of

floor surfaces, including deep pile carpeting. Please consult your dealer or call Atlantic

Technology direct for additional information.

Listening Levels and Power Handling

The power recommendation for these speaker components assumes that you will not

operate your amplifier/receiver in a way that produces distortion. Even rugged speakers

like System 350 THX can be damaged by a moderately powered system driven beyond

its intended capacity. The harsh amplifier clipping that occurs in this situation will

cause damage to the speaker system that is not covered by the warranty.

The System 350 THX will play very loudly when provided with enough power to do so.

Again, consult your dealer or Atlantic Technology for additional information.

Care of your Speakers

Clean your speaker cabinets using a soft cloth moistened with a mild, non-abrasive

glass cleaner being careful not to wet the individual drivers or the edges of the cabinet.

After carefully removing the grilles from the speakers, clean them with a quick pass

from a vacuum cleaner with a brush attachment. This should remove any dust

accumulation.

Avoid placing your speakers in direct sunlight that may, over time, fade the finish.

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TECHNOLOGY

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Models 351 LR, 353 C, and 354 SR

System 350 Specifications

Description 351 LR 353 C 354 SR

Type Sealed-box, 3-way Sealed-box, 3-way, Sealed-box, TwinPolar™ (V-pole)

D’Appolito D’Appolito spatially-enhanced

Drivers ( ) 5-3/4" polypropylene woofer ( ) 5-3/4" polypropylene woofer ( ) 4" polypropylene woofer

( ) 3" composite cone midrange ( ) 3" composite cone midrange ( ) 3/4" mylar dome tweeter

(1) 1" cloth dome tweeter (1) 1" cloth dome tweeter

Frequency 80Hz – 0kHz 80Hz – 0kHz 100Hz – 0kHz

Response (±3dB)

Nominal 4

Ω

Impedance

Sensitivity 90dB 90dB 90dB

Recommended 50 – 150W 50 – 150W 50 – 150W

mplifier Power

Size (W x H x D) 7.6 x 3.0 x 11.7in 5.9 x 8.5 x 10.5in (9.9 h with base) 8.5 x 3.0 x 6.5in

19 x 585 x 97mm 657 x 17 x 66mm ( 51 h with base) 15 x 585 x 166mm

Weight (each) 6.75lbs 5.9lbs (30.55lbs with base) 13.35lbs

1 .16kg 11.77kg (13.89kg with base) 6.07kg

Magnetic Shielding

Yes Yes Yes

Specifications are those in effect at the time of printing. Atlantic Technology reser es the right to change

specifications or designs at any time without notice.

THX and Lucasfilm are registered trademarks of Lucasfilm Ltd. Dolby Stereo and Dolby Pro Logic are trademarks

of Dolby Laboratories Licensing Corporation.

TECHNOLOGY

tlantic

343 Vanderbilt Avenue

Norwood, MA 02062

(617) 762-6300

For Future Reference

Record our speaker(s) serial number(s) and date of purchase here:

Model Number Serial Number Date of Purchase

The serial number is found on the back of the speaker near the connecting terminals.

010-1351

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