Atlantic Technology 4.5-SR Owners manual

System 4.5 High Performance Ultra-Compact

Home Theater Loudspeaker System

Instruction Manual

Covers Models 4.5 LR, 4.5 C, and 4.5 SR

Atlantic Technology

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343 Vanderbilt Avenue Norwood, MA 02062 (781) 762-6300 www.atlantictechnology.com

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HEATER

Models 4.5 LR, 4.5 C, and 4.5 SR

YSTEM

High Performance Ultra-Compact Home Theater Loudspeaker System

4.5

Thank you for choosing Atlantic Technology home theater products. Your new speaker system is precision crafted to give you years of enjoyable, trouble free service. This manual covers the Atlantic Technology System 4.5 series of speakers for home theater. It will show you how to incorporate the following System 4.5 components into your present setup, as well as how to assemble a complete system. The Model 4.5 PBM Subwoofer is covered in detail in a separate manual. System 4.5 has been optimized for use with any surround sound format including Dolby Surround Dolby Digital 5.1® and DTS® digital surround formats.

, Dolby Pro-Logic®,

Model 4.5 LR Front Channel Speaker

The Model 4.5 LR Front Channel Speakers are two-way systems including a built-in high pass filter at 125 Hz, intended for use with a quality subwoofer, such as the Atlantic Technology Model 4.5 PBM. Each speaker contains two 3 1/2" IMG (injection-molded graphite) woofers, and a 1" Ferrofluid cooled silk dome tweeter using a powerful neodymium magnet, in an acoustically inert MDF cabinet.

Model 4.5 C Center Channel Speaker

It is vital to the accurate reproduction of a multi-channel soundtrack that the three front speakers have the same sonic signature. Therefore, the Model 4.5 C Center Channel Speaker contains the same two 3 1/2" IMG woofers, 1" Ferrofluid the 4.5 LR speakers. The 4.5 C is designed for use in home theater systems that use a dedicated center channel speaker. This speaker incorporates unique compensation circuitry that allows it to be placed directly above or below the TV screen and still provide accurate reproduction. Since up to 85% of the movie soundtrack is reproduced through the center channel speaker, it is important that its sound be accurate and timbre-matched to the other speakers in the system. The unique rear-mounted high frequency control incorporated in the 4.5 C allows virtually perfect matching.

To further optimize the performance of the three front channels, all the drivers in the 4.5 LR's and

4.5 C are mounted to a solid machined aluminum plate. This mounting system eliminates undesirable resonances and helps focus the tweeter’s sound to provide precise image placement and wide dispersion.

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cooled silk dome tweeter, and built-in 125 Hz high pass filter as

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Atlantic Technology

Model 4.5 SR Surround Speaker

The Model 4.5 SR Surround Speaker is intended for use in audio/video sound systems with dedicated surround channel speakers. Each speaker has two 3 1/2" IMG woofers, as well as two 3/4" fabric dome tweeters which are angled and phased to produce ambience without localization. Its wide bandwidth and unique construction makes it especially suitable for Dolby Digital and DTS applications. Please note that there is a dedicated LEFT and RIGHT model 4.5 SR. This is clearly marked on the back of each speaker.

Note: The 4.5 SR is not intended for use as a regular right and left front channel stereo speaker or satellite. Its spatial performance characteristics are simply not appropriate for this purpose. In the Atlantic Technology

4.5 Series of components, the Model 4.5 LR fills this role.

Although the speakers in the Atlantic Technology System 4.5 are acoustically and cosmetically matched to each other for best results, they may also be used with a wide variety of speakers from other manufacturers with satisfying results.

Connecting Your System

We recommend that you connect your System 4.5 speaker systems with high quality dual conductor stranded wire of 18 gauge or larger, for lengths up to 25 feet. Use 16 gauge dual conductor or larger for longer runs of wire. Contact your local audio/video specialist for specific cable recommendations and further information for special circumstances.

Warning: To prevent risk of electrical shock or damage to your equipment, always switch off the amplifier or receiver when making connections to the speaker.

You can connect your System 4.5 speakers by using a variety of audio connectors, or you can:

1. Remove 1/2" of insulation from each wire end.

2. Twist the stranded wire together, keeping the two ends separate.

3. Place the appropriate wire through the appropriate postholes in the connectors. These holes are

revealed when you loosen the connector thumbscrew.

4. Screw down the thumbscrew tightly. We recommend that you check your local electrical codes to make sure that you are not using an

Figure 1:

Gold plated 5-way binding posts. Accepts up to 10 guage bare wire

Whether your are connecting a complete System 4.5, or adding a single speaker component to your present system, the wiring should look like the diagram in Figure 2.

improper connector. 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 and note that one of conductors of each pair is marked by a different color, printing, ridges, or a thread intertwined with the wire strands. By convention, the marked wire is connected to the red (+) terminal.

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