Infiniti OMEGA 9301297-001 User's Manual
Contents
1. OMEGA W Infinity TABLE OF CONTENTS Introduction arta aan Imaisin as E 3 About Ths TO Een Nts Das Oh Tv asa E Oe tao v 3 Unpac kino san tasn N KM SHLIKENNT E 3 Associated GOMIPONeM Sy maatansa E HiSEt TKTT KSS TIKIN 4 Installation of SDIkesisuumais sau masa ma Te TY sv hanaan Taa varan ha ea N TaSTI 4 Connections Using a SPER OST DIMEN oi Au es hb ava i Sk ea a aalkaa 5 6 Connection for Bi Amp Opekato istuttaa cc ee ene ee ene eee ee v lke 7 Bie WATLING ssa Ammit eee sn oe of Nd ean oe i 8 Positioning Your Speaker Ass mvs E ames 9 11 Room Acoustics Speaker Positioning and Tonal Balance sousosnntn teen 12 13 Adjtisting Your EMITTM Leyelsada mei i me t tn vet On emake em ai 14 Adjusting Your EMIM M Level sana NANTES MN RKK Aate T 14 Setting the Audio System Controls msn NN A n E TN 14 Acoustic FEC COAG Kn ese seatss ons m t pater sachet natn sasha O E atlas 15 Care of Your SPEARETS mmm tases s na yang uma pena we nl osannsens seamavereatnnerness 15 In Case of Trouble With Your SDeikeisamussda a assa nsa koet sti ams temas 15 Specifications passaa ha asa ae E TAO eat aaa aa ROV ant aans His Mee ens 16 ABOUT THIS PRODUCT INTRODUCTION You have invested in one of the finest audio video speakers available Your Infinity Omega speaker employs new technology in driver crossover and cabinet construction which places it at the forefront of current speaker design As with any high qu2. Omega speakers POSITIONING YOUR SPEAKERS Locating your Omega speakers in the proper position within your listening room is of primary importance if you wish to obtain the best possible perfor mance from your audio system Depending on room size and acoustics mov ing the speakers as little as an inch 2 5cm forward rearward or sideways can result in noticeable sonic differences We urge you therefore to experiment with placement until your speakers deliver their full musical potential As a useful starting point for best stereo imaging place your speakers at least seven feet 2 meters apart Try to locate the speakers as far away as possible from walls and corners of the room to reduce reflections which generally result in sonic anomalies Our experience has shown that speaker placement too close to a wall or corner can create hardness smearing of the sound lack of bass detail and at times other forms of sonic distortion that reduce clarity and change the harmonic structure of music Often as not these sonic anom alies are blamed on the speakers but are really due to poor room placement We cannot stress too strongly the importance of room placement and the role it plays in achieving excellent musical balance See figure 5 When the speakers are moved inward toward each other this generally achieves better focus of instruments and vocalists however moving the speakers too close together can reduce the front to rear stage
3. effect and you may need to experiment with the trade off between focus and imaging If your listening room is larger than average and your listening position is relatively far from the speakers wider placement of the speakers may be required approximately 10 feet or 3 meters apart Try angling the speakers inward for better projection of midrange and high frequencies however do not angle the speakers too sharply because this may reduce stereo imaging as well as front to rear depth The exact angle of toe in must be determined by careful experi mentation There is no formula to follow because rooms differ in acoustics and the listeners position may vary considerably See figure 6 on page 12 Omega Owners Manual 9 Figure 6 Angling Omega speakers Figure 7 Sound is more direct when midrange and tweeter reach the listener at ear level Tilt speaker forward to direct sound at ear level 10 Omega Owner s Manual POSITIONING YOUR SPEAKERS Continued ANGLE SPEAKERS TOWARDS LISTENING POSITION ANGLES FOR BOTH SPEAKERS MUST BE IDENTICAL LISTENER S POSITION The toe in angle for each speaker should be exactly the same for best sonic results This can be done effectively by eye or by using a tape measure or straight edge to measure the amount of toe in from a forward firing position Aligning your speakers with a slight tilt either forward or rearward will help tune them to the room and to your listen
4. 998 Infinity Systems Inc 250 Crossways Park Drive Woodbury NY 11797 USA 516 496 3400 FAX 516 682 3523 Infinity is a registered trademark of Infinity Systems Inc H A Harman International Company Part No 9301 29 7 001
5. LIFIERS WITH OUT FIRST REMOVING THE SHORTING STRAPS ON THE REAR OF THE SPEAKER DO NOT REMOVE THE SHORTING STRAPS WHEN USING ONLY A SINGLE POWER AMPLIFIER except when bi wiring refer to the next section If your amplifiers are not equal in power always use the amplifier with the higher power or greater current capability to drive the woofers When using two different amplifiers it is recommended that at least one of the amplifiers has a level control that will permit you to set the level of one of the amplifiers to balance the other resulting in equal output feeding the woofers and midrange tweeter sections Omega Owners Manual 7 Figure 4 Connecting the speaker for bi wire operation 8 Omega Owners Manual BI WIRING Many audiophiles recommend using two connecting wires instead of one because two wires share current through a greater conducting area If you wish to bi wire your Omega speaker with a single power amplifier remove the two shorting straps on the rear of the speaker that separate the woofer and midrange tweeter sections of the crossover network Two parallel speaker wires are connected to the amplifier s output for each channel and the other ends of the wires are connected to the woofer and midrange tweeter sections of the speaker See figure 4 OMEGA AMPLIFIER POSITION WITHIN A ROOM WILL STRONGLY INFLUENCE PERFORMANCE Figure 5 Suggested starting placement for
6. ality product special care must be taken to install and operate your new speaker It is for this reason we suggest you read this manual carefully from cover to cover prior to installation UNPACKING Upon opening the carton inspect the speaker carefully for any sign of transit damage If there is damage immediately call your dealer or the trucking firm that made the delivery Do not delay in reporting the damage because the longer you wait the more difficult it will become to file a claim We suggest that you fold the carton flat and store it for future use Omega Owners Manual 3 4 Omega Owner s Manual ASSOCIATED COMPONENTS Your Infinity Omega speaker is an extraordinary highly musical system Like all loudspeakers it will reproduce distortion as well as music For this reason the choice of associated audio components is critical and should be made with care If you are replacing existing speakers with an Infinity Omega System there should be an audible improvement in sonic guality assuming your other components are at least on a par with the Omega speaker in terms of low dis tortion phase linearity freguency response and so on If no improvement is heard or if the sound deteriorates it is possible that one or more of your existing components is of a lower standard than your new Infinity speaker When a speaker system is exceptionally revealing musical colorations and other forms of distortion become more notic
7. e audio chain were noninverting if their outputs were always in phase with their inputs maintaining absolute phase would simply involve observation of the polarities of the speaker connecting wires However since there are amplifiers as well as preamplifiers and CD players that invert the output from the input some changes in speaker hookup may be required in order to restore the system to absolute phase If your amplifier preamplifier and CD instruc tion manuals do not state if these audio components are inverting assume they are noninverting since 98 percent of all audio components do not invert the audio signal at the output If you wish to determine whether or not your com ponents are inverting contact your dealer or write to the manufacturer If you are certain that your amplifier is an inverting type it will be necessary to dis connect your speakers and reverse polarity on both speakers so that positive becomes negative and negative becomes positive See figure 8 Figure 8 Connecting inverting and noninverting amplifiers Room ACOUSTICS SPEAKER POSITIONING AND TONAL BALANCE Continued NONINVERTING POWER AMPLIFIER AMPLIFIER RIGHT INVERTING POWER AMPLIFIER AMPLIFIER LEFT RIGHT O OO If you are using two separate amplifiers in a bi amp mode that are inverting types to drive your Omega system the aforementioned modification must be made to th
8. e wires connecting both amplifiers to the speakers If the only inverting component in your system is the preamplifier or CD play er all of the speaker leads when using a single amplifier or two separate ones must be reversed at either the amplifier output or speaker inputs CAUTION Be sure not to reverse the left and right channels Left and right must always be retained as left and right to ensure proper stereo integrity Omega Owner s Manual 13 Note The settings for EMIT and EMIM drivers will vary depending on the listening room they are positioned in Rooms with lots of glass and other hard surfaces may require the cut setting Rooms with lots of draperies and other sound absorbing material may require flat or boost settings 14 Omega Owners Manual ADJUSTING YOUR EMIT LEVEL Your Omega loudspeaker allows the EMIT tweeter to be adjusted to one of three settings boost flat cut Start with the flat setting and compare to the boost or cut setting Trust your ears and select the setting that is most pleasur able for your listening room ADJUSTING YOUR EMIM LEVEL Your Omega loudspeaker allows the EMIM midrange to be adjusted to one of two settings flat and cut Start with the flat setting and compare to cut setting Again trust your ears Wlnfinity SETTING THE AUDIO SYSTEM CONTROLS Never operate your audio system with the equalizer tone and loudness con trols
9. eable because these aberrations are no longer masked by the speaker Here are some sugges tions that will prove useful in obtaining a well balanced audio system e Employ an amplifier with as much power current capability into an imped ance of 4 ohms as possible Since guality speakers work best when driven by high current the choice of an amplifier with a strong adeguate power supply and a heavy duty and rugged output stage generally results in cleaner better defined bass response And while low distortion excellent phase characteris tics and low noise are all extremely important performance parameters suffi cient power into a low impedance load 4 ohms or lower on a continuous basis is egually important e Another consideration is that a lower power amplifier operating at its maxi mum power output can damage a speaker more guickly that a high power amplifier playing at loud sound levels This occurs because many amplifiers clip their output very hard when overdriven creating high frequency dis tortion which can cause the voice coil of a tweeter to heat and eventually fail Always choose an amplifier with high power Your authorized Infinity dealer can best answer your questions and make recommendations The Omega speaker is extremely revealing and will quickly identify sonic anomalies within the listening system Poor quality speaker cables and compo nent interconnects can add harshness detract from spaciousness and r
10. educe airiness surrounding instruments and voice INSTALLATION OF SPIKES Please note that the speakers stand on spiked feet which come with plastic caps installed to prevent injury to you and your belongings The loudspeakers will perform best when the spikes make direct contact with the floor If you wish to protect hardwood or other solid floors leave the plastic caps in place To level the speaker and to provide firm support at each corner on uneven floors you can adjust the height of each foot by screwing it in or out of the bottom of the speaker When installing the spikes be very careful not to allow their sharp points to injure you or anyone helping you Figure 1 Some examples of polarity coding on speaker cables CONNECTIONS USING A STEREO AMPLIFIER GOLD PLATED SHORTING STRAP Wlnfinity Always turn off the power of your entire system before making connections to your speaker Connect each speaker to your amplifiers output terminals using the best wire you can obtain The choice of speaker connecting wire is extremely important especially when using speakers as sonically revealing as Infinity Omega If inferior wire is used sonic guality will suffer and the degra dation of sound will be readily audible For best results do not use wire that is thinner than 16 gauge NOTE the lower the gauge number 16 14 12 etc the heavier the wire Although gauge alone does not reveal the ultimate sonic gua
11. he wire do not touch the ground terminal and be sure to observe polarity Even a thin stray wire can cause distortion in the system that would be very difficult to trace Speaker Positive should be connected to amplifier Positive and speaker Negative to amplifier Negative Connect the LEFT speaker to your amplifiers LEFT channel output terminals in a similar manner See fig ure 2 LEFT SPEAKER AMPLIFIER Figure 3 Connecting the speaker for bi amp operation CONNECTION FOR BI AMP OPERATION Your Infinity Omega speakers permit you to employ two power amplifiers in a bi amp configuration One amplifier feeds the woofer the signal passes through the speakers crossover network to feed the woofer and the other amplifier drives the remainder of the speaker system This arrangement gener ally results in the purest and most open sound obtainable from the speaker To connect your speaker to two amplifiers merely remove the two gold plated straps which connect the bass and higher frequency section of the crossover network together for use with a single power amplifier and connect one amplifier to the bass terminals and the other amplifier to the tweeter midrange terminals Observe polarity as detailed in the previous section See figure 3 O OMEGA AMPLIFIER O H F EMIT flat flat EMIM OLF i Winfinity O O AMPLIFIER DO NOT ATTEMPT TO EMPLOY TWO SEPARATE AMP
12. ies often accentuating bass response and making it inarticulate If bass response is inadequate you may wish to move the speakers closer into the corners or rear wall for reinforcement however as a rule of thumb always try to locate the speakers as far away from corners and walls as possible It is often difficult to balance bass response because it is within this particular frequency spectrum where the listening room becomes a substantial influence When moving the speakers around listen for sound that is cohesive and evenly balanced across the audio spectrum Use various types of program material when determining sonic balance Additional advice on room acoustics and placement is contained on the next page under the heading Room Acoustics Speaker Positioning and Tonal Balance Omega Owners Manual 11 12 Omega Owners Manual Room ACOUSTICS SPEAKER POSITIONING AND TONAL BALANCE If you desire a more detailed description of room acoustics and speaker place ment the following information may prove helpful e Large areas of glass mirrors and wood paneling will reflect sound waves and may result in harshness and excessive brightness You can reduce the sound waves reflected by hard surfaces by utilizing softer surfaces For example draperies or wall hangings do a good job of absorbing high frequencies Placing a soft absorbent piece of furniture near the hard surface often helps reduce unwanted sound waves Be ca
13. ing position If your sitting position aligns your ears on a plane that is lower than the midrange and tweeter you may wish to tilt the speakers downward so the acoustic output from the speak ers reaches your ears on a direct plane If you are seated in a position that directs the sound toward your chest or shoulders it may be necessary to tilt the speakers slightly rearward so the acoustic output from the midrange and tweeters reaches your ears on a direct plane Toe in tilting and moving the speakers closer and further from walls and corners are all part of the system tuning procedure Don t be afraid to experiment as this will result in the best sound If a specific location yields satisfying results and you wish to continue to experiment with speaker placement mark the ideal location so you can always return to it When installing your speakers be very careful to keep them on the same plane exactly the same distance from the front wall It is advisable to use a tape measure or string to measure the exact distance the speakers are located from the front wall See figure 7 3 FEET 1 METER FRONT OF SPEAKERS ON SAME PLANE AND AT SAME ANGLE LISTENER S POSITION POSITIONING YOUR SPEAKERS Continued Room corners are difficult to cope with and you should try to keep the location of the speakers as far away from corners as possible Corners add low frequency reinforcement and can create severe problems in bass frequenc
14. lity of wire it represents a good starting point especially if you are not using a name brand speaker connecting cable Consult your dealer if you are not certain which type of wire will make your Infinity speaker sound best When using regular lamp cord look for ridges or different colored insulation to differentiate polarity If there is a ridge on the outer insulation use the ridge for positive and the wire without the ridge for negative If the insulation wrapped around one wire is red use it for positive Use white or whatever the other color may be for negative See figure 1 DIFFERENT COLOR RIDGE STRIPE OR ROUGH OR COLORED CONDUCTORS PRINTING ONE LEAD INSULATION ONE LEAD It is important to connect your speakers in phase which means that all indi vidual drivers are moving in and out in the same direction and at the same time in order to obtain the best localization of instruments and voice as well as the deepest most natural bass If a speaker is out of phase the drivers in one channel will move in while the other channel will move out This condi tion invariably results in sonic problems and must be avoided Omega Owners Manual 5 Figure 2 Speaker connection 6 Omega Owner s Manual CONNECTIONS USING A STEREO AMPLIFIER Continued Using one length of speaker connecting wire connect the RIGHT speaker to your amplifiers or receivers RIGHT channel output terminals Be sure that strands of t
15. m vibrations becomes an important procedure The turntable should be placed on a heavy solid support located as far from the speaker as possible At times using a shock mounted base helps reduce vibration pickup If after trying various methods to reduce acoustic feedback the phenomenon still exists contact your dealer for assistance NOTE CD players which are susceptible to vibrations should be mounted on solid supports to isolate them acoustically Another method to isolate the CD player is to mount it on four rubber or plastic legs which have a predeter mined amount of elasticity CARE OF YOUR SPEAKERS Use a soft cloth and a fine furniture oil to clean the wood finish If you use a spray cleaner polish be careful not to spray the polish on the grille cloth The grille may be vacuumed occasionally but always set the vacuum cleaner on low suction to avoid tearing the cloth IN CASE OF TROUBLE WITH YOUR SPEAKERS Note that you can use your amplifiers two channels of information for simple troubleshooting If the sound quality is distorted listen to each speaker sepa rately to check if the fault is present in both If it is then the trouble is likely to be elsewhere in your system If the fault is in one channel only reverse the outputs from your amplifier to the speakers right to left and left to right If the distortion moves to the other channel the fault is not in the speaker This technique may also be used to locate a faul
16. reful not to absorb too much sound as this will interfere with sonic balance causing overall sound to be dull and lifeless A good listening room has just the right amount of reflection and absorbtion To test the sonic balance of your room stand in the location where the speakers will be installed and clap your hands two or three times If the room is reverberant you will hear a sharp echo If the room is dull the sound of the clap will decay rapidly and there will be very little or no echo In fact it will seem that the higher frequencies generated by the clap will be missing e Furniture pictures bookcases tables and lamps will help reduce unwanted reflections because they are located at random points in the room Carpeting or throw rugs also help reduce floor reflections although heavy carpeting can absorb a great deal of the high frequencies which will make the room seem bass heavy e It is customary to place the speakers facing into the long dimension of the listening room however this doesn t always result in the best sound At times placing the speakers facing into the short dimension of the room will yield better results due to the acoustic properties of the room and the listener s position Experiment with room placement You may be pleasantly surprised at the results e Maintaining absolute phase is an essential factor in the proper performance of your speakers If all amplifiers as well as the other components in th
17. set at maximum boost This will place undue strain on the amplifier and can also result in damage to the speakers The position of the volume control setting is of little consequence in judging the amount of power a system generates Loudness is a function of audio gain which in itself is unimportant to the user The only important consideration is the loudness level at which the system can be safely played regardless of where the volume control is set Always turn down the volume of your system completely when changing a record or switching inputs from phono or CD to FM and so on Excessively loud transients which can result from a dropped stylus on a record or from improperly designed switches can result in severe damage to your speakers Furthermore when changing wires pulling plugs and so on always turn off all the equipment to prevent transients from entering the speaker Use caution and your speakers will repay you with many years of trouble free service ACOUSTIC FEEDBACK If after connecting your system you find the bass response to be boomy or lacking in tightness and solidity or if the bass driver cones produce excessive movement the cause can usually be attributed to acoustic feedback vibra tions from the speakers reaching a turntable and tone arm creating a reso nance In turn this vibration is fed back to the electronics and speakers Since Omega speakers extend to very low frequencies isolating the turntable fro
18. t between the signal source and preamp receiver and or between preamp and power amp s If you have been unsuccessful in locating the specific source of trouble or if you have located it but have been unable to correct it please consult the Authorized Infinity Dealer from whom you purchased the system Infinity Dealers are audio specialists and can be of great assistance Omega Owners Manual 15 SPECIFICATIONS PERFORMANCE DATA FINISH DIMENSIONS Declaration of Conformity CE We Infinity Systems A S Kongevejen 1948 DK 3460 Birkerod DENMARK declare in own responsibility that the product described in this owner s manual is in compliance with technical standards EN 50081 1 1991 EN 50082 1 1992 fue Steen Michaelsen Infinity Systems A S Birker d DENMARK 6 98 OMEGA Recommended Power 100 500 watts RMS per channel Freguency Response 30Hz 42kHz 2dB Crossover Freguencies 180Hz 900Hz 4000Hz Sensitivity 87dB amp 2 83V 1M Drivers EMIT amp EMIT R Tweeters EMIM MIDRANGE 6 1 2 165mm MIDBASS 12 305mm WATKINS WOOFER Black Height Width Depth 48 7 16 x 15 3 8 x 15 1230 x 390 x 380mm Weight 121 1bs 55 kg Infinity constantly strives to update and improve existing products as well as create new ones Therefore the specifications and construction details in this and related Infinity publications are subject to change without notice O 1
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