Atlantic Technology AT-2 User Manual
AT- 2
High Performance Loudspeaker
with H-PAS™ Technology
Instruction Manual
2
Table of Contents
AT-2 High Performance Loudspeaker with H-PAS™ Technology
Table of Contents
2 Introduction
3 Unpacking the Speakers
3 Attaching the Feet
3 Attaching the Grilles
3 Glass Tops
4 Placement
4 Using the AT-2 in a 2-channel Music System
4 Using the AT-2 in a Home Theater System
6 Connecting Your Speakers
6 Conventional Connection
6 Bi-amp Connection
6 Wire Management System
7 System Wiring
8 High Frequency Energy Control
9 Caring for Your Speakers
9 Specifications
AT-2
High Performance Loudspeaker with
H-PAS™ Technology
Thank you for choosing Atlantic Technology products. Your new speaker has
been precision-crafted to give you years of enjoyable, trouble-free service.
This manual covers the Atlantic Technology AT-2 speaker. It will show you
how to incorporate these speakers into your present setup, as well as how
to assemble a complete music or home theater system from them. The AT-2
can be used with all current and past sound formats including Stereo, all
Dolby and DTS formats, DVD-Audio and SACD Audio.
Introduction
The Model AT-2 is a 2-way system of extraordinarily high performance
intended for use in a top-quality music or home theater system. Its patentpending H-PAS™ bass technology enables the AT-2 to deliver powerful low
bass performance (-3 dB @ 44 Hz) not previously achievable with comparably-sized drivers in similar-sized enclosures.
Each speaker contains one GLH (Graphite Loaded Homopolymer) 5 ¼"
(135mm) woofer and an advanced 1
Resonance silk dome tweeter with an integral back chamber/heatsink. These
components are mounted in an acoustically inert MDF enclosure, with special proprietary internal bracing, called CDFF™ (Cross Design Free Flow).
This bracing makes the enclosure extremely rigid, while perfectly maintaining the internal airflow that is critical to its performance.
1
⁄8" (28mm) ferrofluid-cooled, Low
For Future Reference
Record the serial number and date of purchase for each speaker here. The serial number
is found on the speaker terminal panel on the back of the enclosure.
Serial Number
Serial Number
Date of Purchase
The contents of this manual are Copyright © 2011 by Atlantic Technology International,
Corp., and may not be duplicated or reproduced by any means, whether physical, electronic
or otherwise without prior written consent from Atlantic Technology International, Corp.
Atlantic Technology and the Atlantic Technology logo are registered trademarks of Atlantic
Technology International, Corp.
Specifications are those in effect at the time of printing. Atlant ic Technology International,
Corp. reserves the right to change specifications or designs at any time without notice
without obligation to modify existing units.
IMPORTANT:
please take a few moments to read all of this booklet. It has many
helpful tips and ideas on properly setting up and using your system.
We promise that if you take the time to read and follow these tips
you’ll get better system performance and more enjoyment.
Although it may seem like asking for driving directions,
Instruction Manual
Unpacking and Assembly
3
Unpacking the Speakers
Use care when unpacking the speakers. Since the grilles are packed off the
speakers, be particularly careful of the driver elements as you unpack and
move the speakers. Remember to keep the original boxes and packing material, in the unlikely event the speakers need servicing, or if you move.
Attaching the Grilles
The included metal grilles are held to the front of the enclosures with powerful neodymium magnets. There are depressions on the back of the grille that
the magnets fit into. Once the speakers are in their final position, remove
the grille from its protective plastic bag and carefully position it over the
magnets on the baffle.
Move them together slowly and when you get close enough, the magnets
will draw the grille in and hold it tight. Be careful not to get your fingers
caught between the grille and the cabinet.
Using the AT-2 on Speaker Stands
Many high-quality speaker stands—like the Sanus® Ultimate
Foundations®--use a through-bolt that goes through the stand’s top plate
and attaches to a ¼”-20 threaded insert in the bottom of the speaker. If you
are using speaker stands with your AT-2’s, we suggest using this type of
stand, since it provides the most rigid assembly for the best acoustic performance, and the most secure installation for maximum safety. (See figure 1)
Figure 2
AT-2 High-performance
loudspeaker
AT-2
Figure 1
¼" x 20 insert
Top plate of stand
with through-hole
¼" x 20 bolt
4
Placement
AT-2 High Performance Loudspeaker with H-PAS™ Technology
Speaker/room interactions have a huge impact on the sound of the system.
Moving the speakers just a little can make a dramatic difference in what you
hear. Remember that the best acoustic placement of the speakers will vary
from room to room. Use the following placement guidelines as a starting
point. But also feel free to experiment. In fact, it may be beneficial to hook
up the speakers with some extra wire and to simply drape the wire across
the floor before installing the speakers permanently. This will allow you the
opportunity to move the speakers around easily so you can find the best
sonic and visual locations.
Using the AT-2 in a 2-channel Music System
When using the AT-2 as a 2-channel music speaker (in a “stereo” system),
place the speakers approximately 6-10 feet apart, so the distance between
the speakers is roughly equal to the distance from the speakers to the listening position. (See figure 3) Place the AT-2 on speaker stands or on furniture
such that the tweeters are at approximate seated ear height. Begin with the
AT-2 about 1 foot away from the wall behind it. Moving it closer to the wall
will increase the apparent bass balance; pulling them farther away will
yield a somewhat “leaner” bass balance. Experiment with the positioning
to achieve the most satisfying balance in your room.
The AT-2 has very wide horizontal dispersion, due to its Low Resonance
Tweeter (LRT™) design and low woofer-to-tweeter crossover frequency.
Therefore, it’s not necessary to “toe in” the speakers as one ordinarily does
with conventional speakers. However, this is also a matter of individual
preference, so again we encourage you to experiment and find the degree
of sonic imaging precision that you find most pleasing.
Figure 3
2-channel music configuration
Using the AT-2 in a Home Theater System
The AT-2 works extremely well as part of a home theater system. In such
a system, place the AT-2’s on either side of the television. The left and right
front speakers should be far enough apart (6 to 10 feet, 2-3 meters, is usually best) that you get a good stereo “image” when they are playing alone,
but not so far apart that the sound seems to be disembodied from the TV,
distracting you from the picture.
Like all Atlantic Technology speakers, the AT-2 is tonally “voiced” to mix and
match with our other models. The 4400 C or 6200e C both make excellent
center channel speaker companions to the AT-2 LRs in a home theater system.
When using a center channel speaker in a home theater system, a wider
separation of the left and right front speakers is usually possible than in
a conventional 2-channel stereo system. Therefore, you may choose to toe
in the AT-2 LR speakers slightly, aiming them towards the prime listening
position. (See figure opposite)
IMPORTANT:
tweeters at approximately the same height (within about 18” of each
other) and aimed at ear level when seated. The AT-2’s driver alignment provides an enhanced horizontal spread of the sound, making for a much better sound experience for a group of listeners and
reducing the need to sit in a precise “sweet spot.”
Try to keep the AT-2’s and Center channel speaker’s
Setting Bass Management
Even though the AT-2 delivers strong, deep bass response on its own, it is
nonetheless desirable to use a powered subwoofer in a home theater system
for the following reasons:
1. The bass level of the powered subwoofer is controllable by the
receiver’s remote control. This is an extremely important feature to
being able to “dial in” a satisfying bass level for your home theater
system from your listening chair.
Left Right
2. When employing AT-2 speakers (along with a powered subwoofer)
in a theater system, set your receiver’s setup menu to “Subwoofer—
Yes,” and set your front speaker configuration to “Small”. Set the
receiver's crossover to the AT-2 to the around 60Hz.’
Follow your receiver and powered subwoofer manufacturers’ recommendations for bass crossover setting and subwoofer placement. Generally, it’s best
to set the receiver’s subwoofer crossover no higher than 80 Hz, in order to
maintain non-localizability of the stand-alone powered sub.
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