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A

TECHNOLOGY

tlantic

Models 251 LR, 253 C, and 254 SR

2

System 250

High Performance Loudspeaker System

Welcome to Atlantic Technology’s world of excellence in sound reproduction. Your new
speaker system is precision crafted to give you years of enjoyable, trouble free service.
This manual covers the 

Atlantic Technology System 250

 series of speakers for

home theater. It will show you how to incorporate the following System 250 compo-
nents into your present system, as well as how to set up a complete system. The 

Model

262 PBM Subwoofer

 is covered in a separate manual.

The 

Model 251 LR Front Channel Speakers

 are two-way systems for use with a

quality subwoofer, such as the Atlantic Technology Powered Bass Modules. Each speaker
contains two 4" polypropylene, long-throw woofers, and a 3/4" ferrofluid cooled tweeter
in an acoustically inert MDF cabinet.

The 

Model 253 C Timbre Adjusting Center Channel Speaker

 contains two high

power 4" polypropylene woofers and a 3/4" ferrofluid cooled tweeter. It is designed for
use in home theater systems that use a Dolby Pro Logic decoder.

The 

Model 254 SR On-Wall/In-Wall Surround Speaker

 is intended for use in

audio/video sound systems with a Dolby Pro Logic receiver (or a Dolby Pro Logic
decoder and a surround amplifier). Each speaker has one 4" polypropylene woofer, as
well as two 3-1/2" polypropylene mid-tweeters that are angled and phased to produce
ambience without localization for movie surround sound tracks.

Although the speakers in the Atlantic Technology System 250 are acoustically and
cosmetically matched to each other, they may also be used with a wide variety of other
speaker systems.

Note:

 The 254 SR is not intended for use as a regular right and left front channel stereo

speaker or satellite. Its spatial performance characteristics are not designed for this purpose.
In the Atlantic Technology 250 Series of components, the Model 251 LR fills this role.

Connection

We recommend that you connect your new System 250 speaker components using high
quality stranded wire of 18 gauge or larger for lengths up to 25 feet. Use 16 gauge or
larger for longer runs of wire. Contact your local audio/video specialist for more specific
information.

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.

Summary of Contents for 251 LR

Page 1: ... Instruction Manual ATECHNOLOGY tlantic Models 251 LR 253 C 254 SR System 250 High Performance Loudspeaker System ...

Page 2: ...r The Model 254 SR On Wall In Wall Surround Speaker is intended for use in audio video sound systems with a Dolby Pro Logic receiver or a Dolby Pro Logic decoder and a surround amplifier Each speaker has one 4 polypropylene woofer as well as two 3 1 2 polypropylene mid tweeters that are angled and phased to produce ambience without localization for movie surround sound tracks Although the speakers...

Page 3: ...d by either a different color printing ridges or a thread intertwined with the wire strands Conventionally the marked wire is connected to the red terminal Whether your are connecting a complete System 250 or adding one speaker compo nent 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 acr...

Page 4: ...t a good stereo image but not so far apart that the sound seems to come directly from the speakers distracting you from the picture If you are using a center channel speaker a wider separation of the left and right front speakers is usually possible The Model 253 C should be placed directly on or under your television Place the speaker base so that the foot cutouts are facing forward Then set the ...

Page 5: ... was designed with acoustically matching drivers To help achieve this goal when using front speakers from another manufacturer we have provided two controls Figure 4 on the rear of the 253 C enabling you to adjust its tonal characteristics to emulate those of your front left and right speakers Begin the adjustment procedure by turning both control knobs to the 251 position This approximates the At...

Page 6: ...he necessary hardware and trim 254 SR only 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 250 can be damaged by a moderately powered system driven beyond its intended capacity The harsh amplifier clipping that occurs in this situati...

Page 7: ... 5kHz Response 3dB Nominal 8Ω 8Ω 8Ω Impedance Sensitivity 90dB 90dB 90dB Recommended 10 150W 10 150W 10 150W Amplifier Power Size W x H x D 6 0 x 13 0 x 8 5in 15 0 x 6 75 x 7 75in including base 9 5 x 10 5 x 6 4in 152 x 330 x 216mm 380 x 152 170 x 197mm 241 x 267 x 163mm Weight each 9 11lbs 4 1kg 10 0lbs 4 5kg 8 4lbs 3 82kg Specifications are those in effect at the time of printing Atlantic Techno...

Page 8: ...ce Record your speaker s serial number s and date of purchase here Model Number Serial Number Date of Purchase Model Number Serial Number Date of Purchase Model Number Serial Number Date of Purchase The serial number is found on the back of the speaker near the connecting terminals 010 1251 ...

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