Owner Information
Contents
1. IHIEL Live Inside The Music Model CS2 7 Coherent Source Loudspeaker System Owner Information Made In USA ongratulations on your purchase of the THIEL CS2 7 Coherent Source loudspeaker system The CS2 7 is the culmination of more than 35 years of research and development directed towards creating loudspeakers capable of reproducing music in the most accurate way possible We have carefully chosen the finest quality components and have taken great care in constructing your CS2 7s CS2 7s follow a long tradition of THIEL 3 way floorstanding speakers beginning with the CS2 which entered production in 1985 Historically CS2 series loudspeakers are distilled from CS3 series loudspeakers which are the platform for our newest innovations Possessing the essential state of the art technologies CS2 series loudspeakers have always been considered the highest performance per dollar loudspeakers available from THIEL Each predecessor has received accolades from audiophile journalists and music lovers worldwide As we have developed replacements to this series of loudspeaker the design goals have remained the same but we have strived to improve upon resolution of detail reproduction of images and soundstages dynamic capability and tonal purity Without question our CS2 7 is our best result in this series of loudspeakers To date no other three way floorstanding loudspeaker can offer such impressive results i2. CS2 7 uses 5 way binding posts that accept several types of wire connections Regardless of the type of wire termination make sure that all connections are tight The input terminals are designed to be easily tightened by hand or a Y inch nut driver can be used It is essential for proper performance that both speakers in a stereo system be wired in the same polarity The speaker s input terminals are color coded to facilitate this The wire connected to the red ringed input terminal of each speaker should connect to the respective positive output terminals of the amplifier the wire connected to the black ringed input terminals should be connected to the respective negative output terminals of the amplifier The speakers should be connected to the amplifier with high quality cable to ensure minimal loss of power and proper control by the amplifier If the speakers are being connected to a vacuum tube amplifier with various impedance taps the 4 ohm tap will usually give the best results BE BE Bottom Rear Cabinet View STABILIZER FEET The speakers should be positioned before the stabilizer feet are installed Speakers positioned on a soft or uneven surface are able to rock slightly and will vibrate in reaction to forces the speaker generates to move the driver diaphragms Every action has an equal and Lock Nut opposite reaction This motion slightly reduces the music s clarity To eliminate this effect the CS2 7s ca
3. The CS2 7s are very high quality sound reproducers and will benefit from use with the finest associated equipment Because the CS2 7 is a 4 ohm speaker an amplifier with high current capability is recommended It is desirable that the amplifier provide twice the power into a 4 ohm load 85 into an 8 ohm load Since the CS2 7s are extremely accurate transducers they will reveal distortions generated anywhere in the system Also the quality of the interconnect and speaker cables will significantly affect the performance of the system POWER REQUIREMENTS It is important to have enough power to play at the level you desire without distortion If you play the speakers more loudly than the volume the amplifier can cleanly produce the amplifier will produce overload clipping distortion The sound will become compressed strained and in extreme cases obviously distorted This distortion is actually non musical additional energy and since it is concentrated in the high frequency region where the speaker is least able to handle it tweeters can be damaged in extreme cases If high sound levels are desired the CS2 7 s are designed to be used with amplifiers rated up to 600 watts per channel Keep in mind that sound quality is usually more important than sound quantity There can be large differences in the sonic performance of two amplifiers of equal power and this is more important than large differences in power Most everyone will be happier with a 100
4. watt amplifier of high sonic quality than a 200 watt amplifier of mediocre sonic quality For this reason we feel there is no substitute for listening in making your amplifier decision The question how much power do need does not have the simple answer most people expect because it is not determined only by the loudspeaker s efficiency but also by the volume desired and the size of the room If all three factors are average about 100 watts per channel is required Each factor can raise or lower this amount by about three times 1 Usually people who don t like music loud can decrease their power to about one half Also people who like music loud should increase their power by 2 times or more Most people fall within a normal range 2 A speaker with a low efficiency of 84dB 2 8 V 1 m will require twice the power of an average 8708 2 8 V 1 m speaker and one with a high rating of 90dB 2 8 V 1 m will require only half the power of an average speaker The CS2 7 is of average efficiency 87dB and therefore can work well with normal amounts of power from a quality amplifier 3 A small room will need less power for a given loudness level than a large room A very small room of 1000 cu ft 11 x 11 with an 8 ceiling will require about half the power of an average size room A large room of 6000 cu ft 20 x 30 with a 10 ceiling will require twice the average power If the listening room is connected to another room by a large open area th
5. well as the amount of spacing between the speakers In a larger room the optimum positioning suggestions on pages 3 and 4 are easier to implement Figure 5 shows one set up with the speakers five feet from the side walls three feet from the rear wall and the speakers aimed straight ahead This arrange ment provides an ample amount of space around the speakers to reduce unwanted reflections and should give excellent spatial performance and a very open sound Other placement options in this room include wider spacing between the speakers add ing toe in as the spacing increases increased space between the speaker and the back wall to improve imaging depth Various listening position dis tances can also be tried As mentioned at the beginning of the positioning section all rooms are different and no hard rules can be given Even rooms with similar dimen sions can have differences in wall floor and ceiling construction that greatly affect the sound Also live rooms with hard surfaces glass and little damping sound much different from dead rooms with heavy carpet drapes and plush furniture In other words EXPERIM EN T 5 7 i 7 1 8 10 Listening Distance Figure 4 Average listening room with long wall placement Figure 5 Large listening room speaker placement CONNECTING THE SPEAKERS The CS2 7 s input terminals are located on the lower rear of the speaker cabinet The
6. S RSS Sf eU ea Cte Sax UL BAS aA GUL ABC APBUOSIT ST sUNNS COjeatG eati p tsas OF sG s Os t Gea t5 GEAU AS C SAN s D C vacuum cleaner SERVICE 3 GUepKa s SaaS N s amp 4 ACS e SUO s LET EAUPES 2 3 GS ISHOGUECSES MGUTsC L2 3 QASSTGGS pe GO UN GEOL O Ss AOT IGe Urat ef i 8 GGT Ae dazs UO GC COTINIGHGGEINID CT aG SxUpe EGAN AT Gs pe amp Sg M e JA sUNTO 2 x GSI S UN tion and a Frequently Asked Q uestions section can be found at our web site www thielaudio com If for some reason you need to service the driver or crossover elements in your CS2 7 be aware that the drivers are mounted using 9 64 hex head screws and all drivers are soldered into place The coaxial coincident driver and passive bass radiator are removed from the front of the speaker The woofer is rear mounted and can be removed through the passive radiator opening CS2 7 SPECIFICATIONS Bandwidth 3dB 35 Hz 20 kHz Amplitude Response 35Hz 20 kHz 2 5 dB Phase Response Minimum 10 Sensitivity 87 dB 22 8 V 1m Impedance 4 Q 2 4 Q minimum 160Hz Recommended Power 100 400 watts Size w x d x h 11 x 16 7 x 41 inches 28 x 42 4 x 104 cm Weight 77 Ibs 35 kg 0 LV a CONTRIBUTOR mon 16 7 We Want You Listening For A Lifetime Used wisely your new sound equipment will provide a lifetime of enjoyment Since hearing damage from loud
7. acing the loudspeakers farther from side walls The arrival times of the primary forward radiating sound waves and the secondary reflected sound waves are well separated providing the proper delay needed for faithful tonal and spatial reproduction There will also be a noticeable improvement in openness when the speakers are even two feet from the rear wall instead of one If possible we prefer the speakers three feet or more from the rear wall and five feet or more from the side walls Also it is not desirable for large objects to be placed very near the Direct sound Reflected sound lt gt Difference in arrival times Figure 1 Early reflection problems caused by speakers placed too close to side walls Direct sound Reflected sound 4 Difference in arrival times itus x p p Figure 2 Optimum placement for reducing reflection problems speakers since these will also be a source of unwanted early reflections that reduce imaging accuracy Spacing Because of their very wide even dispersion of energy the CS2 7s can usually be placed farther apart than most other speakers O ptimum imaging is usually achieved when the speakers are almost as far apart as each speaker is from the listener although this will depend on the width of the room narrow rooms require more narrow placement If the speakers are too far a
8. e required power will increase but not by the amount of the combined room volume If the room has a dropped ceiling with light panels the ceiling will be almost transparent acoustically and the space above the ceiling should be added If the panels are heavy they will act as a more normal ceiling CT AAC EVRIEXN 4 at 8 UOCE AUG Us aOGCLES MGI GIN eae es i GE OF AL at GN GUUN GI OC get quality sound with 50 watts or even less whereas a person who sometimes likes to play loudly and has a large room may need 400 watts or more GRILLE The CS2 7 grille is attached magnetically to the front of the speaker The grille is designed to not pro duce diffraction so there is no sonic reason to remove it If you do need to remove the grille carefully el Gs Ops Ci s E GCpUN CAS COO Gs Ges 500 ASOdS l sA gt CS Gps ais s Opts AAC the baffle s inlay edges OPTIONAL OUTRIGGER BASE The CS2 7s can be used with an optional O utrigger base shown right The O utriggers attach to the bottom of the speaker cabinet with four mounting bolts provided with the O utrigger screwed into the four threaded openings normally used for the speaker s stabilizer feet Complete installation instructions are included with the O utrig gers CARE The cabinets possess a high quality lacquer finish that is both beautiful and durable However any wood finish can be damaged by excessive moisture dry CSAS ABSGECAAGT 4505 5 Ol CU
9. n all areas of performance without compromise Properly set up and used with good associated equipment your speakers will provide a great deal of musical enjoyment We thank you for your choice of our loudspeakers for your home entertainment system and wish you years of enjoyment Contents 2 Positioning the speakers 3 Connecting the speakers 6 Leveling feet ciriciri 6 lt e e t eR RU da a 7 Associated equipment 7 0 7 a E 8 Outrigger Base feptiorial sie ici dee eto h e ntes 8 de e H 8 DET VICE o 8 lt ORB 9 10 Design Philosophy The CS2 7 loudspeaker is a precision instrument designed to translate as accurately as possible electronic information into musical sound All our efforts have been directed toward achieving extremely faithful translation of all tonal spatial and dynamic information as supplied by the amplifier CS2 7s are not intended to mitigate or mask shortcomings of the recording or other components in the playback system We believe this approach is the only way to provide the potential of experiencing all the subtle aspects that help make recorded music a most enjoyable human experience POSITIONING THE SPEAKERS Because of their unipolar radiation pa
10. n be used with four stabilizer feet on uneven surfaces or on carpeted floors to provide a more solid footing and allow the speaker to couple more firmly to the floor To install the feet rGUagEOUSG s ISHXCS Sa US r CARAS G S SKAJE PAEAN GASC SI CUXASG S ISI C stabilizer Foot is a few inches off the floor r Gs QOSCUUGE AACS dus XDe ALS E zs C CAS E GC onto the foot into each of the two holes at the back corners of the speaker bottom The pins should be screwed into the speaker until there is about 7 of thread remaining visible r C ASC sl CAS GSS SIUE Od O CAS OCHRTAS SI SEE sl p GIZEAGIGGUCAL CAS QUOC CSE C inches off the floor and install the two front feet firmly on the floor without wobbling Then tighten the lock nuts by turning them so they are tight against the cabinet to secure the feet to the cabinet Please be cautioned that the stabilizer feet can dent hardwood floors and itis possible to mar the floor s surface if the speakers are moved with the feet in place BREAK IN The CS2 7s like most speakers require a period of playing before they perform optimally The time required depends on how loudly the speakers are played more time is required if played softly less if played loudly At least 200 hours at moderately loud levels are required before the speaker is performing near optimum You should notice even more improvement after 300 400 hours of playing ASSOCIATED EQUIPMENT
11. noise is often undetectable until it is too late THIEL and the Consumer Electronics Association rec ommend you avoid prolonged exposure to excessive noise Depending on room size and amplifier power some home audio systems can reach sound pressure levels in excess of 95 decibels with peaks of over a 105 decibels For your protection the list below identifies sound levels for various noises Decibel Level Example 30 40 50 60 70 80 Quiet library soft whispers Living room refrigerator bedroom away from traffic Light traffic normal conversation quiet office Air conditioner at 20 feet sewing machine Vacuum cleaner hair dryer noisy restaurant Average city traffic garbage disposals alarm clock at two feet 90 100 120 140 150 Information courtesy of the Deaf ness Research Foundation and the CEA The Following Noises Can Be Dangerous Under Constant Exposure Subway motorcycle truck traffic lawn mower Garbage truck chain saw pneumatic drill Rock concert in front of speakers thunderclap Gunshot blast jet plane Rocket launching pad LIMITED WARRANTY THIEL warrants every THIEL model CS2 7 system against defects in materials and workmanship to the original owner for a period of ten years from the date of purchase THIEL will at no charge replace any defective part and make any repairs necessary to ensure its proper performance when the defective unit is returned to us postpaid This warranty does n
12. ommendations They should not be discouraged from investing in CS2 7s It is our opin ion that due to their unipolar point source radiation pattern their very even wide dispersion and the co axial mounting of the tweeter and midrange drivers the CS2 7s fare better under difficult circumstances than most other high quality speaker systems To help with placement the following suggestions are given as a starting point for a variety of rooms Figure 3 shows an average size room Gener ally itis best to start with short wall placement This arrangement provides sufficient space behind the speakers allows the listener to be far enough away from the speakers and still maintains some distance between the listening position and the wall behind the listener Since the speakers may be near side walls in order to keep spacing between the speakers wide toeing in the speakers is suggested Figure 3 Average listening room Some rooms especially narrow ones can benefit from placing the speakers along the long wall Although space behind the speaker and behind the listener is reduced this positioning in creases the space between the speak ers without side wall interference and can improve overall performance Figure 4 shows the same average size room as Figure 3 but with long wall placement The speakers should be at least a foot from the rear wall but the amount of toe in can be adjusted along with listener position as
13. ot cover damage due to accident or abuse and is void if the unit has been tampered with This warranty is automatic and no registration is required This warranty gives you specific legal rights You may also have other rights which are particular to your state The following information is for your records Serial Numbers Purchase Date Purchased From REGISTER YOUR 10 YEAR WARRANTY ONLINE AT http www thielaudio com THIEL Site05 Pages warrantyreg html 10 LA C O C 045558 ww w thielaudio com
14. part for the room there will tend to be a hole in the middle of the soundstage if they are too close together the image will be compressed and will not achieve optimum width Aiming Depending on the room in which they are used the CS2 7s can be aimed anywhere between straight ahead and angled in so they point directly at the listener Straight ahead placement produces the widest most natural soundstage However if it is not possible to place the speakers the desired distance from side walls a toed in position will reduce the strength of side wall reflections and in these cases provide a more focused spatial presentation Bass In general when a speaker is close to a wall the bass response is stronger placing a speaker in a corner will make it even more so The CS2 7s are designed to provide accurate bass when positioned away from all walls the same position that provides the best imaging Listener position The CS2 7s provide broad dispersion of energy at all frequencies and therefore provide good results throughout a large listening area Best imaging is provided for a listener centered in front of the speak ers O ptimum accuracy of timbre and depth perspective is provided for a seated listener who is eight or more feet away from the speakers Placement suggestions Some people have restraints on speaker placement because of room size shape or aesthetic consider ations and cannot meet one or more of the above placement rec
15. ttern the CS2 7s will provide good results when placed in a variety of room locations However speaker placement will affect the accuracy of timbre spatial performance and bass performance Here are some guidelines to help you achieve the best sound from your speakers The pointed metal stabilizer pins should not be installed until the final positioning has been determined All aspects of speaker placement are dependent on the particulars of the room Since every room is different no hard rules can be given and experimentation is necessary to achieve the best results Distance from walls The CS2 7s like most speakers sound best if they are placed well away from all walls Such placement optimizes imaging characteristics and musical timbres are reproduced with the least coloration because the initial sound coming from the speaker is distinctly separated in time from the secondary sound of wall reflections If reflections are heard too soon after the primary sound the brain tends to interpret them as part of the initial sound causing the perceived timbre to be altered and the spatial characteristics to be confused Figure 1 illustrates the problems caused by early side wall reflections When the speaker is placed too close to side walls the difference in arrival times between the primary sound waves and the reflected sound waves is too short for the brain to discriminate between them Figure 2 illustrates the advantages of pl
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