Atlantic Technology AT-1 Speaker User Manual
Contents
1. AT 1 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 1 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 1 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 1 is a 2 way system of extraordinarily high performance intended for use in a top quality music or home theater system Its patent pending H PAS bass technology enables the AT 1 to deliver powerful low bass performance 3 dB 29 Hz not previously achievable with compa rably sized drivers in similar sized enclosures Each speaker contains two GLH Graphite Loaded Homopolymer 5 14 135mm woofers and an advanced 1 28mm ferrofluid cooled Low Resonance silk dome tweeter with an integral back chamber heatsink The drivers are configured in an M T M array midrange tweeter midrange alignment This vertical arrangement of drivers provides wide left to right coverage of sound while limiting the floor and ceiling reflections that can color the sound These components are mounted in an acoustically inert MDF enclosure with special proprietary internal bracing called2. CDFF Cross Design Free Flow This bracing makes the enclosure extremely rigid while perfectly maintaining the internal airflow that is critical to its performance IMPORTANT Although it may seem like asking for driving directions 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 Unpacking and Assembly 3 m Instruction Manual 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 mate rial in the unlikely event the speakers need servicing or if you move Attaching the Feet The cast aluminum feet with spikes are shipped unattached to the speaker We recommend you attach the feet before proceeding to any other aspect of setup and installation Attach the feet to the bottom of the speaker cabinet as shown The spikes can be adjusted to level the speaker Circular metal discs are provided to protect hardwood floors Attaching the Grilles The included metal grilles are held to the front of the enclosures with power ful neodymium magnets There are depressions on the back of the grille that the magnets fit into Once the speakers are i
3. either side of the television The left and right front speakers should be far enough apart 6 to 10 feet 2 3 meters is usu ally 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 1 is tonally voiced to mix and match with our other models The 4400 C or 6200e C both make excellent cen ter channel speaker companions to the AT 1 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 1 LR speakers slightly aiming them towards the prime listening position See figure opposite IMPORTANT Try to keep the AT 1 s and Center channel speaker s tweeters at approximately the same height within about 18 of each other and aimed at ear level when seated This is because we ve designed the alignment of the drivers on the front panel to limit the vertical spread of the mid and high frequencies thereby reducing the floor and ceiling reflections that can adversely affect sound quality The AT 1 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
4. AT 1 High Performance Loudspeaker with H PASTM Technology H PAS a 2 Table of Contents Table of Contents Introduction Unpacking the Speakers Attaching the Feet Attaching the Grilles Glass Tops Placement Using the AT 1 in a 2 channel Music System Using the AT 1 in a Home Theater System Connecting Your Speakers Conventional Connection Bi amp Connection Wire Management System System Wiring High Frequency Energy Control Caring for Your Speakers Specifications WO WO OP ADN EER W WW WN 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 2010 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 Atlantic Technology International Corp reserves the right to change specifications or designs at any time without notice without obligation to modify existing units AT 1 High Performance Loudspeaker with H PAS Technology
5. ason In any case save all packing materials until you are certain that the systems have suffered no damage in shipment If you find such damage either visible or internal contact your dealer immedi ately Specifications E Instruction Manual Specifications Model AT 1 Type H PAS Hybrid Pressure Acceleration System 2 way M T M array Drivers Woofer 2 5 135mm long excursion GLH cone Tweeter 1 28mm low resonance soft dome with 4mm oversize long throw surround and integral back chamber heatsink Frequency Response 29 20kHz 3dB Nominal Impedance 62 Crossover Frequency 2kHz Crossover Type Parallel 2nd order LP 3rd order HP Sensitivity 89dB Recommended 20 200 Watts RMS Amplifier Power Dimensions w grilles 8 x 41 x 13 34 WxHxD 227 x 1041 x 348mm Feet add another 1 25mm to Height Weight ea 54 Ibs 25 kg ea Graphite Loaded Homopolymer Specifications are those in effect at the time of printing Atlantic Technology reserves the right to change specifications or appearance at any time without notice All other trademarks are the property of their respective owners 10 Notes AT 1 High Performance Loudspeaker with H PAS Technology Notes 11 eB Instruction Manual Atlantic TECHNOLOGY 343 Vanderbilt Avenue Norwood MA 02062 781 762 6300 www atlantictechnology com 015 0001
6. e See figure 6 opposite You can connect your speakers by using a variety of audio connectors such as pin connectors spade lugs etc or you can 1 Remove 13mm of insulation from each wire end 2 Twist the stranded wire together keeping the two ends separate 3 Place the appropriate wire through the postholes in the connectors These holes are revealed when you loosen the connector s capscrew 4 Screw down the capscrew tightly but be careful not to over tighten it 5 Check the tightness of the capscrews 24 hours after hookup and occasionally after that as they can loosen over time Its 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 the conductors of each pair will typically be identified by color printing on the outer jacket ridges on the outer jacket or a thread intertwined with the wire strands By convention the marked wire is connected to the red terminal WARNING Before turning on the amplifier be certain that no stray wire strands are touching across any terminals as this might damage your amplifier Finally check the polarity of your speakers by listening to some stereo music with good bass content If the sound seems hollow unusually spread out or seems to have weak bass recheck your connect
7. ions for proper polarity and correct the out of phase connection if necessary AT 1 High Performance Loudspeaker with H PAS Technology Bi amp Connection Remove terminal straps See figure 7 opposite Bi amplification uses separate amplifiers for the high and low frequency sections of the speaker Using separate amplifiers increases the current avail able to drive the speaker and decreases the audibility of amplifier generated harmonic and intermodulation distortion since the amplifiers high and low frequency distortion products do not interact with each other the way they do in a single full range amplifier A speaker driven in bi amplified mode will play louder and sound cleaner than the same speaker driven by a single full range amplifier of equivalent combined wattage IMPORTANT The power recommendation for these speaker systems assumes that you will not operate your amplifier receiver in a way that produces distortion Even rugged speakers like these can be dam aged by an amplifier driven into audible distortion The harsh ampli fier distortion clipping that occurs in this situation will eventually cause damage to the speaker system This type of damage may be cumulative and can build up over time as the amplifier is driven into overload again and again Such damage is easily identifiable through examination of the damaged speaker s voice coil and is not covered by the warranty These speakers will play very loudly
8. n of treble to bass over a wide frequency band Such adjustments although relatively subtle can make the AT 1 more suit able to different acoustic environments or tailor its sound more closely to one tastes We encourage you to experiment with the different tweeter settings to find the one that sounds best in your room A Figure 8 O AT High Fidelity e Loudspeaker System amp AT 1 High Performance Loudspeaker with H PAS Technology Caring for your Speakers Clean your cabinets using a soft lint free cloth If you wish you can slightly moisten the cloth with plain water Do not use any other cleaning agents or chemicals Be careful not to get any water on the driver cones or tweeter domes After carefully removing the grilles from the speakers by pulling them forward gently clean the grilles with a quick pass from a vacuum cleaner with a brush attachment This should remove any dust accumula tion Reattach them by lining up the magnet depressions in the back of the grilles with the magnets on the speaker baffle and slowly moving them closer until they connect with each other Avoid placing your speakers in direct sunlight or near a source of heat that may over time damage the finish IMPORTANT SAVE YOUR BOXES If you can do so save the cartons packing pieces and plastic bags that came with your speakers They will be useful in case you move or have to ship your loudspeakers for any re
9. n 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 Glass Tops Decorative smoked glass tops are provided for the AT 1 to complete its elegant appearance Attach the four self adhesive rubber pads to the top of the cabinet as shown to prevent vibration and place the glass on top of the cabinet with the bevel towards the front See figure 2 Figure 1 Attaching the feet Attach feet to threaded inserts in bottom of cabinet with supplied screws Screw tips into foot Adjust to level speaker Optional tip toes protect CS hardwood floors Figure 2 Installing the glass top Figure 3 AT 1 High performance loudspeaker m4 Placement Placement 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 in
10. stalling 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 1 in a 2 channel Music System When using the AT 1 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 lis tening position See figure 4 Begin with the AT 1 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 satisfy ing balance in your room The AT 1 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 4 2 channel music configuration Left Q Right L AT 1 High Performance Loudspeaker with H PAS Technology Using the AT 1 in a Home Theater System The AT 1 works extremely well as part of a home theater system In such a system place the AT 1 s on
11. sweet spot Setting Bass Management Even though the AT 1 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 2 When employing AT 1 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 Large or Full Range depending on how your receiver labels it This will effectively give you three subwoofers in your home theater system all residing in different physical locations throughout your listening room Not only will having three subwoofers give you a higher level of undistorted high impact bass in your system having them at different physical locations will randomize and smooth out the bass modes and standing waves in the room resulting in a more uniform bass response with fewer room caused hot spots and cancellations Follow your receiver and powered subwoofer manufacturers recommenda tions 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 localizabilit
12. when provided with enough undis torted power to do so If necessary consult your dealer or Atlantic Technol ogy for additional information Wire Management System Attach the wire management guides to the speaker s rear panel as shown see figure 5 with the included hardware Run your speaker wire under the guides for a neat installation Figure 5 Installing the wire management brackets System Wiring u Instruction Manual System Wiring Be sure to connect red on the speaker to red on the amplifier and black on the speaker to black on the amplifier Figure 6 Conventional Connection TERMINAL STRAPS IN PLACE oO gt INPUT Figure 7 Bi amp Connection TERMINAL STRAPS REMOVED AMP FOR HIGH FREQUENCIES AMP FOR LOW FREQUENCIES u High Frequency Energy Control High Frequency Energy Control This control changes the relative output level of the tweeter It has been designed to help compensate for different room acoustics and personal listening preferences The 0 position is the most accurate frequency response but that does not mean that it is necessarily the recommended position The and positions adjust the tweeter s output by very slight amounts over its entire operating range from 2kHz to 20kHz These positions change whats known as the speaker s spectral balance by altering the proportio
13. y of the stand alone powered sub Speaker Placement gt E Instruction Manual Speaker Placement for Home Theater Left Surround Speakers should be placed directly to the sides of the seating area and approximately 3 feet 1 meter above the listener s ear level gt Left Surround Left Surround Back Dd 1 Lu Front Speaker Array should be within 18 vertical height of each other Center suswoorer fl Subwoofer lt Right Surround Right Surround Back Surround Back Speakers should be placed approximately 3 feet 1 meter above the listener s ear level me Connecting Your Speakers Connecting Your Speakers We recommend that you connect your system using high quality dual conductor stranded wire of 16 gauge or heavier for lengths up to 25 feet 8m Remember the lower the gauge number the heavier the wire Use heavier gauge wire for longer runs Please contact your audio video dealer or installer for specific cable recommendations and further information regarding special circumstances The terminals themselves are designed to allow the use of very heavy speaker wire or connectors Be sure to tighten them securely but don t over tighten them WARNING Jo prevent risk of electrical shock or damage to your equipment always switch off the amplifier or receiver when making any system connections Conventional Connection Leave terminal straps in plac
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