Theater Grand Amplifier
Contents
1. The voltage range for the trigger input is from 5 to 18 VDC The input impedance is approximately 600 Q 20 mA 12V 3 RCA Inputs Your Theater Grand Amplifier has three sets of inputs for each of the seven channels Two are unbalanced RCA inputs and one is a balanced XLR type The two RCA inputs for each chan nel are joined together internally and either one can be connected to the corresponding output of your pream plifier The second RCA input can be used as a daisy chaining output sending the preamplifier output signal to an other channel or to another amplifier 4 XLR Inputs If your preamplifier has XLR outputs connect them to these XLR inputs These balanced connections offer superior noise rejection com pared to the unbalanced RCA inputs particularly for long cable runs The female XLR inputs are wired as follows Pin 1 is ground 1 Pin 2 is positive hot 3 Pin 3 is negative cold 2 Balanced connections pass the input signal along two conductors If there is any external noise and inter ference passing into the audio lines both conductors will receive the same amount of noise This noise is then rejected in the balanced input stage of the Theater Grand Amplifier Sunfire User s Manual 5 Current Source Outputs and 6 Voltage Source Outputs The front left and front right chan nels each have a Voltage Source output and a Current Source output The remaining channe2. Sunfire Theater Grand Amplifier TGA 7400 TGA 7400 E and TGA 7200 TGA 7200 E TGA7400 User s Manual o O f CAUTION RISK OF ELECTRIC SHOCK DO NOT OPEN CAUTION TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT REMOVE COVER OR BACK NO USER SERVICEABLE PARTS INSIDE REFER SERVICING TO QUALIFIED SERVICE PERSONNEL The lightning flash with arrowhead symbol within an equilateral triangle is intended to alert the user to the presence of uninsulated dangerous voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons The exclamation point within an equilateral triangle is intended to alert the user of the presence of important operating and main tenance servicing instructions in the literature accompanying the appliance Important Safety Instructions 1 Read Instructions 2 Keep these Instructions 3 Heed all Warnings 4 Follow all Instructions 5 Do not use this apparatus near water 6 Clean only with dry cloth 7 Do not install near any heat sourc es such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 8 Unplug this apparatus during light ning storms or when unused for long periods of time 9 Refer all servicing to qualified ser vice personnel Servicing is required when the apparatus has been dam aged in any way such as a power supply cord or plug is dama
3. across Each speaker can be driven by two to the rear channel RCA jacks amplifier channels one to drive the In this way the front and rear woofer and one for the upper range amplifier channels are fed with You will need to use four amplifier the same signal from your channels to biamp two speakers preamp If you use the Theater Grand Ampli Note you cannot use XLR fier for biamping then a total of five cables in with RCA out or speakers can be connected You will RCA in with XLR out There is need an extra two channel amplifier no direct internal connection if you want to run the surround back between the RCA and XLR speakers in a 7 1 channel Home The inputs ater system 12 Sunfire User s Manual Biamping Connections Note The remaining channels can be used to drive other speakers or left unconnected These connections have been omitted from this drawing and the one below for clarity They can be connected as shown on pages 10 and 11 Line level audio signals From Amplifier Front L R RCA To Amplifier Rear L R RCA inputs Biamping with an external crossover If you have an external active crossover you can greatly increase the efficiency of your system The crossover will split the preamplifier output signals into two frequency ranges You can connect the crossover s low frequency outputs to the ampli fier s rear channel inputs and the crossover s higher frequency outputs to the amplifier s front channe
4. corresponding input jacks on the Theater Grand Amplifier Sunfire User s Manual APPENDIX Series and Parallel soeaker connections The connection of more than one Parallel speaker per channel will tend to degrade the speaker s frequency response and may make the amplifier For example if you want to parallel e Ideally the total average connect two speakers to the front right impedance should be no less channel of the amplifier than 4 ohms per channel run hot For the best results use one speaker per channel If you do want to connect more than one speaker per channel there are two main ways Series or Parallel Series For example if you want to series connect two speakers to the front right channel of the amplifier Amplifier Amplifier Outputs e The positive output terminal of the right channel connects to the positive input post of the first speaker e The negative input post of the first speaker connects to the positive input post of the sec ond speaker e The negative input post of the second speaker connects to the negative output terminal of the right channel e The total impedance of speak ers in series is found by adding their impedances together For example two four ohm speak ers in series is an eight ohm load e Series connections are easier on the amplifier than parallel connections as the total imped ance is highe
5. is ground Pin 2 is positive hot 3 Pin 3 is negative cold gt Damping Factor 150 12 VDC Trigger Inputs Input voltage range 5 18 VDC Impedance approx 600 Q 20 mA 12 V Removable terminal block and dual 1 8 minijacks for daisy chain ing Power Consumption 45W At idle 280W Typical 1 8th power 1800W Absolute Max Fuse Limit Dimensions and Weight 17 0 inches wide 5 9 inches high including feet 16 7 inches deep to tips of con nectors Weight 34 Ibs Finish Brushed aluminum with black an odize or a light titanium finish 2006 Sunfire Corporation All rights reserved Sunfire Corpora tion reserves the right to improve its products at any time Therefore specifications are subject to change without notice Manual part 913 135 00 Rev A Sunfire User s Manual Limited Warranty Sunfire Corporation is proud of its products which have been built with care using advanced technology and premium component parts Your unit has been crafted to perform properly for many years Sunfire Corporation offers the following Warranty to you the owner of a new Sunfire product The Sunfire Corporation Warranty for the Theater Grand Amplifier is in effect for FIVE years from the date of original retail purchase The Sunfire Corporation Warranty covers defects in materials and workmanship The following however are excluded a Damage caused during ship ment b Damage caused by acciden
6. no output to that speaker A 8 IEC connector The amplifier comes with a detach able Linecord which attaches here Make sure it is firmly pushed in place Connect the other end to an AC outlet which is properly configured for the type of plug and has the correct volt age for your model 9 AC Line fuse If this fuse fails replace it with the exact same type and current rating A With a flat ended screwdriver push the fuse carrier in slightly and turn it counter clockwise to release Unplug the amplifier from the AC mains power supply if you ever have to change a fuse Note Always unplug the power cord from your AC outlet before removing the fuse system Configurations The following pages show some typical connections that you might make in your installation They show how the inputs and outputs of the Theater Grand Amplifier are connected to your preamplifier and speakers Unbalanced Connections P RB If your preamplifier has RCA out puts it can be connected to the ampli fier inputs as shown The amplifier will boost the preamplifier s output up to a level suitable for driving speakers This diagram also shows how the Voltage Source outputs connect to the input posts of your speakers The Current Source can be used instead as shown on the next page 10 UNBALANCE D LB Rs L O RF LF Line level audio signals From Preamplifier main RCA outputs To Amplifier l
7. trigger inputs The amplifier will automatically turn off after a few seconds if the trigger voltage is removed or after approximately 30 minutes in the absence of an audio signal e Inthe ON position the ampli fier is always on regardless of input signals or 12 VDC trigger e Inthe OFF position the ampli fier is always off regardless of input signals or 12 VDC trigger e See page 7 for details of the front panel LED status Sunfire Corporation TGA 7400 2 12 VDC Trigger Input Although the AUTO ON signal sensing turn on is adequate for most installations the 12 VDC trigger inputs are offered as an optional way to turn on the amplifier The Sunfire Theater Grand Il III IV and TGP 5 Processors have a com patible 12 VDC trigger output see page 11 This can be used to auto matically turn on the amplifier when the processor is turned on 1 8 mono mini jacks are provided for ease of installation along with a terminal strip to allow more flexibility for custom wired installations The terminal strip and both mini jacks are internally connected in parallel allow ing daisy chaining to turn on multiple amplifiers Any 1 8 miniplug mono or stereo interconnect cable will suffice to con nect the trigger output of the Theater Grand Processor to the amplifier Do not exceed 18 VDC on this input CAUTION Do not connect AC line voltage to this input 120 VAC 154 50 601
8. which can be used to biwire your speakers The idea is to use the voltage source to drive the woofer and the current source to drive the upper range This will offer improved performance and still allow you to con nect seven speakers for your Home Theater system This page shows the input and out put connections for Biwiring a left front speaker and a right front speaker The remaining speaker connections have been omitted from this drawing for clarity They can be connected as shown on pages 10 and 11 Output connections e Connect the amplifier s right front voltage source output to the right speaker s woofer input terminals Connect the amplifier s right front current source output to the right speaker s upper range input terminals e Connect the amplifier s left front voltage source output to the left speaker s woofer input terminals Connect the ampli fier s left front current source output to the left speaker s upper range input terminals 14 UNBALANCED PREAMP OUTPUTS L Be Line level audio signals From Preamplifier main RCA outputs To Amplifier line level inputs Sar ae Ae S IA Fo Speaker level audio outputs From Amplifier outputs To Speaker input posts RIGHT Le TWEETER RIGHT CURRENT WOOFER LEFT Toa SOURCE VOLTAGE TWEETER ET SOURCE eed VOLTAGE RCE S LOUDSPEAKERS OURCE Input connections Connect your preamplifier s outputs to the
9. ange Make sure that the preamplifier has been correctly set If you are not using a subwoofer set the speaker options to LARGE and the subwoofer to OFF Check that the speaker wires have been connected correctly Make sure that the positive of each speaker connects to a positive out put of the amplifier and the neg ative of each speaker connects to a negative output If one speaker is wired incorrectly than it will be out of phase with the others resulting in poor bass performance If you have connected the amplifier using the XLR inputs make sure that the XLR cables are wired cor rectly If one has the hot and cold reversed then this will also cause a speaker to be out of phase Turn on and turn off thumps Plug the amplifier into an unswitched AC outlet and use the AUTO ON feature This will allow the amplifier to turn on and off silently Current source outputs not working If you are biamping or biwiring make sure that the current source fuses have not blown APPENDIX 17 APPENDIX Specifications TGA 7400 Power output 400 watts continuous per chan nel into eight ohms at 1 kHz with no more than 0 5 T H D Power at clipping min 800 watts per channel into four ohms Hum and Noise 118 dB A Weighted Maximum output current 120 amps peak to peak per ch Maximum output voltage 56 6 Vrms Output impedance Front Left and Right channels Voltage source Approx zer
10. audio and video com ponents connected to your processor are on and fully operational The following information will help you deal with common setup problems you may experience during normal use of your unit If the problems still persist please contact your Sunfire Dealer for assistance No sound from one or more speakers e Speaker cables may have come undone Turn off your system and check the cables and tighten the amplifier and speaker binding posts e Broken audio cable e The preamplifier volume level is low for the channels concerned Recheck the preamplifier calibra tion procedure e A preamplifier Mute switch may be on or an external processor loop or a tape monitor loop is engaged e Check that your preamplifier or source is running the correct sur round sound mode Maybe it is set for stereo when you were expect ing 5 1 surround sound e Check in case any missing chan nels have been turned off ina preamplifier setup menu For example the center amplifier channel will not receive a signal if the preamplifier has been set to Phantom e The Auto on off switch might be in the off position e One of the fuses for the current source outputs may have blown 16 The amplifier shuts down often or the line fuse blows often e Check that the positive and nega tive speaker wires are not shorted together e Make sure that no speakers are shorted internally If you have an ohm meter discon
11. ch your purchase receipt to this Warranty and keep these in a safe place Thank you for your choice of a Sunfire Corpo ration product APPENDIX Service Assistance We suggest that you read the Limited Warranty completely to fully understand your Warranty Service coverage If your Sunfire Corporation product ever requires service write to us or call Sunfire Corporation Technical Services Department P O Box 1589 Snohomish WA 98291 Tel 425 335 4748 Fax 425 335 4746 You will be directed to an autho rized Sunfire Corporation Service Station or receive instructions to ship the unit to the factory Please save the original shipping carton and packing materials in case shipping is required Please do not ship Parcel Post NOTE Before sending in your unit for repair you must call Sunfire for return authorization Include a complete description of the problem indicating how you have it connected the associated equip ment in your system and a copy of your purchase receipt Initial shipping costs are not paid by Sunfire Corpora tion return ground shipping costs will be prepaid if repairs were covered by the scope of this Warranty 19 Theater Grand Amplifier TGA 7400 TGA 7400 E and TGA 7200 TGA 7200 E Sunfire Corporation P O Box 1589 Snohomish WA 98291 _ Manual part number 913 135 00 Rev A
12. e amplifier will then automatically turn on when a preamp audio signal is received 11 Sunfire User s Manual CHAPTER 2 Biamping If your speakers can be biamped The following connections are the Theater Grand Amplifier can be shown in the diagram on the top half configured to provide a very powerful of the next page system l Output connections e Connect the amplifier s right rear output to the right speak er s woofer input terminals Connect the amplifier s right front current source output to the right speaker s upper range input terminals If you prefer you could use the right front voltage source instead e Connect the amplifier s left rear output to the left speaker s woofer input terminals Connect the amplifier s left front current source output to the left soeaker s upper range input terminals If you prefer you could use the left front voltage source instead A speaker which can be biamped or biwired will have two sets of binding posts Sometimes these posts are Input connections joined with bridge clips for normal operation Each amplifier channel has two RCA inputs which are connected Make sure that any bridge together internally clips are removed when biamping or biwiring the Connect the preamp stereo speakers If not this may output to the front channel cause damage to the RCA jacks Then install short amplifier interconnects from the other unused front RCA jacks
13. e between the amplifier and the speaker system Whichever way you decide to hook up the amplifier it will create a multilayered soundstage that is deep wide three dimensional and utterly believable The optional current source output can coax forth a sensuous delicately detailed musical voice long associated with low powered classic tube amplifiers The current source characteristic of vacuum tubes is the dominant factor in the sound stage delivery of classic tube amplifiers fob Ce Sunfire User s Manual CHAPTER 1 Theater Grand Editions The Theater Grand seven chan TGA 7400 and TGA 7400 E lifier i ilable in t pat ed een mc 400 Watts per channel into 8 Q TGA 7400 800 Watts per channel into 4 Q e TGA 7200 Theater Grand Amplifier The TGA 7400 has twice the power output and uses heavier output ter minals compared to the TGA 7200 This manual uses illustrations of the TGA 7400 The operational details features and connections to loud speakers and preamplifiers are the same for both models The TGA 7400 E and TGA 7200 E are export models set for TGA 7200 and TGA 7200 E 220 240 VAC operation Their opera 200 Watts per channel into 8 Q tion is identical to the TGA 7400 and TGA 7200 amplifiers 400 Watts per channel into 4 Q Sunfire User s Manual CHAPTER1 H Unpacking Your Sunfire Amplifier should reach you in perfect condition If you do notice any shipping damage please contact y
14. ed in this operating manual All other servicing should be referred to qualified service personnel Carts and stands The Component should be used only with a cart or stand that is recommended by the manufacturer A Component and cart combination should be moved with care Quick stops excessive force and uneven surfaces may cause the Component and cart combination to overturn K Sunfire User s Manual 16 To prevent electric shock do not use this polarized plug with an exten sion cord receptacle or other outlet unless the blades can be fully inserted to prevent blade exposure Pour pr evenir les chocs lectriques ne pas utiliser cette fiche polarise avec un prolongateur un prise de courant ou une autre sortie de cou rant sauf si les lames peuvent tre ins r es a fond sans laisser aucune parllle a d couvert 17 Grounding or Polarization Precautions should be taken so that the grounding or polarization means of the Component is not defeated This apparatus does not exceed the Class A Class B whichever is ap plicable limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Ca nadian Department of Communications ATTENTION Le pr sent appar eil num rique n met pas de bruits radio lectriques d passant las limites applicables aux appareils num riques de class A de class B selon le cas prescrites dans le r glement sur le broui
15. ents Some special patch cords can only be hooked up in one direction these are usually marked with arrows e It is usual for the right patch cord plugs to be red and the left connections to be white grey or black Video connec tions are usually yellow Sunfire User s Manual Front Panel Features Theater Grand Amplifier Overview Your Theater Grand Amplifier has seven channels of power amplifica tion combined in one chassis for the purpose of reproducing music or video soundtracks It accepts line level signals from a controlling preamplifier and amplifies them to a higher level suitable for driving powerful stereo and Home Theater speakers Sunfire User s Manual CHAPTER 1 TGA 7400 Power Switch Press the power switch to turn the amplifier on With this switch pressed in the Standby On LED will turn red when the amplifier is in standby or blue when the amplifier is on The rear panel switch controls how the amplifier turns on signal sensing 12V trigger etc Please refer to page 8 for more details CHAPTER 1 Rear Panel Features 1 ee CURRENT LTAGE MAL I Ay js 12VDCTOTURN ON TRIGGER INPUTS 1 AUTO ON OFF Switch Your Theater Grand Amplifier is designed with an automatic on off circuit e Inthe AUTO ON position the amplifier will automatically turn on if an audio signal is pres ent at any of the inputs or if it receives a 12 VDC input volt age at the
16. ged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped 10 Ventilation The apparatus should be situated so that its location or position does not interfere with its proper ventilation For example the apparatus should not be situated on a bed sofa rug or similar surface that may block any ventilation openings or placed in a built in installation such as a bookcase cabinet or closed equip ment rack that may impede the flow of air through ventilation openings 11 Power Sources The apparatus should be connected to a power sup ply only of the type described in these operation instructions or as marked on the apparatus PORTABLE CART WARNING 12 Power Cord Protection Pow er supply cords should be routed so that they are not likely to be walked upon or pinched by items placed upon or against them paying particular at tention to cords at plugs convenience receptacles and the point where they exit the apparatus 13 Non use Periods The power cord of the apparatus should be un plugged from the outlet when unused for a long period of time 14 Object and Liquid Entry Care should be taken so that objects do not fall into and liquids are not spilled into the inside of the apparatus 15 Servicing The user should not attempt to service the apparatus beyond those means describ
17. ine level inputs D D N l ae om Make sure that the posi tive speaker wires do not touch the negative speaker wires or any chassis metal This will cause a short circuit and may damage your amplifier or speakers RB R RS C H a Speaker level audio outputs L LS LB From Amplifier outputs OUDSPEAKERS To Speaker input posts R Right Channel C Center Channel L Left Channel RS Right Surround rear Channel LS Left Surround rear Channel RB Right Surround Back Channel LB Left Surround Back Channel Sunfire User s Manual Balanced Connections If your preamplifier has XLR outputs it can be connected to the XLR inputs as shown This example shows the connec tions to the Sunfire Theater Grand Processor TGP 5 This also shows the Current Source output connections to the front left and right speaker inputs The Voltage Source outputs can be used instead as shown on the previous page Sunfire Theater Grand Processor TGP 5 12 VDC Trigger signal From Preamplifier trigger outputs To Amplifier trigger inputs REN Balanced line level audio signals From Preamplifier XLR outputs To Amplifier XLR inputs RB RS TH 4 Speaker level audio outputs From Amplifier outputs To Speaker input posts The 12 VDC trigger connection shown can be used to turn the ampli fier on when the preamplifier turns on Alternatively you could use the ampli fiers AUTO ON switch Th
18. l inputs This is an efficient system because the channels only amplify signals with in the frequency range of the speaker element they are driving Little power is wasted Make sure that the crossover point of your active crossover is adjusted to match the crossover point of your speakers Consult your speaker and crossover owner s manuals Sunfire User s Manual UNBALANCED PREAMP OUTPUTS Line level audio signals From Preamplifier main RCA outputs To Amplifier RCA inputs D AG ais 23 LOL Speaker level audio outputs From Amplifier outputs el Fe 5 To Speaker input posts CURRENT WOOFER renal LEFT F UDSPEA RENT KERS SOURCE UNBALANCED PREAMP OUTPUTS R FULL FREQ RANGE ACTIVE EXTERNAL CROSSOVER LOW FRI RANGE R HIGH FREQ RANGE T RIGHT T gt TWEETER RIGHT Le 4 CURRE WOOFER LEFT L SOURCE TWEETER LOUDSPEAKERS CURRENT SOURCE 13 Biwiring Connections If your speakers can be biwired or biamped they will have completely separate input terminals for the woofer section and the upper range See the speaker diagram and discussion on page 12 Make sure that any links be tween the woofer and upper range posts are removed from the speakers when you want to biamp or biwire them Consult your speaker owner s manual for details The front channels of the Theater Grand Amplifier each have two pairs of outputs
19. llage radio lectrique dict par les ministere des communications du Canada WARNING TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK DO NOT EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE CAUTION TO PREVENT ELECTRIC SHOCK MATCH WIDE BLADE OF PLUG TO WIDE SLOT FULLY INSERT ATTENTION POUR EVITER LES CHOCS ELECTRIQUES INTRO DUIRE LALAME LA PLUS LARGE DE LA FICHE DANS LA BORNE CORRESPONDANTE DE LA PRISE ET POUSSER JUSQU AU FOND Contents A Safety Instructions Chapter 1 Introduction Theater Grand Editions Unpacking and Installation Front Panel Features Rear Panel Features e Chapter 2 System Configurations Fa Appendix Series and Parallel Troubleshooting Guide Specifications Limited Warranty Service Assistance Sunfire User s Manual Please read the Safety Instructions carefully before connecting and using your Sunfire Amplifier Chapter 1 is a general introduction to the features details and installa tion of your amplifier Chapter 2 shows some typical con nections to a preamplifier and speakers The Appendix shows some addition al information including a trouble shooting guide the Warranty and service assistance details To find out more about this and other Sunfire products please visit our website www sunfire com CHAPTER1 H Introduction Bob Carver Amplifier Designer Physicist Dear Friend Thank you for purchasing a Sunfire Theater Grand Am
20. ls have Voltage Source outputs only The Voltage Source outputs have a source impedance of approximately zero ohms The Current Source outputs have a source impedance of approximately one ohm The top post of each binding post pair is the positive output and con nects to the positive red post of your speaker The bottom post of each pair is the negative and connects to the negative black post of your speaker The posts can accept bare wire spade terminals and dual or single banana connectors 5 E lt D 5 a Dual Banana Banana According to your musical taste you may select the Current Source for driving electrostatic planar magnetic or ribbon speakers Select the Volt age Source for driving subwoofers For cone based systems use either For a biwired system use the Current Source for midrange and treble driv ers and use the Voltage Source for the subwoofer s These are sugges tions only By all means please feel free to experiment with other wiring options See page 14 ESF CHAPTER 1 NOTE The Current Source output is a Voltage Source modified to yield an impedance of one ohm This cor responds approximately to a vacuum tube amplifier s output impedance and constitutes the dominant factor in the soundstage delivery of classic vacuum tube power amplifiers 7 Current Source Fuses Each Current Source output has an in line fuse to protect your speakers If one ever opens there will be
21. nect the speaker wires and measure the resistance between the speaker s positive and negative terminals If the read ing is less than 2 ohms the speak ers may have an internal short Measure all speakers and check their impedance specifications e If you have connected speakers in Parallel the overall impedance may be too low It is recommended that you rearrange the speakers in Series to increase the overall impedance thus taking some of the load off the amplifier e Make sure that the amplifier has good ventilation and is not overheating If the amplifier is in a closed rack open up the rear panel or use a quiet fan for im proved ventilation A hum is heard in your speakers This problem is more than likely caused by a ground loop in your sys tem rather than a fault in the amplifier Follow these steps to isolate the main cause of the hum there may even be more than one e If your preamplifier has XLR bal anced outputs use them because they offer greater immunity to noise fields e Remember to unplug all compo nents in your system including the amplifier before disconnecting or connecting any cables during troubleshooting e Try to have all of your equipment on the same electrical outlet or circuit Group all the low power components preamp CD player DVD etc on a single outlet or power strip This is provided that the overall current draw from your equipment does not exceed the rating of
22. o ohms Current source Approx one ohm RCA Input impedance 24 KQ Input sensitivity for rated output Unbalanced 1 9 Vrms Balanced 0 95 Vrms XLR Input impedance 10 kQ each leg balanced to ground Female XLR Pin 1 is ground Pin 2 is positive hot Pin 3 is negative cold Damping Factor 150 1 2 18 12 VDC Trigger Inputs Input voltage range 5 18 VDC Impedance approx 600 Q 20 mA 12 V Removable terminal block and dual 1 8 minijacks for daisy chain ing Power Consumption 45 W At idle 580 W Typical 1 8th power 1800 W Absolute Max Fuse Limit Dimensions and Weight 17 0 inches wide 5 9 inches high including feet 16 7 inches deep to tips of con nectors Weight 40 Ibs Finish Brushed aluminum with black an odize or a light titanium finish TGA 7200 Power output 200 watts continuous per chan nel into eight ohms at 1 kHz with no more than 0 5 T H D Power at clipping min 400 watts per channel into four ohms Hum and Noise 115 dB A Weighted Maximum output current 80 amperes peak to peak per channel Maximum output voltage 40 Vrms Output impedance Front Left and Right channels Voltage source Approx zero ohms Current source Approx one ohm RCA Input impedance 24 KQ Input sensitivity for rated output Unbalanced 1 34 Vrms Balanced 0 67 Vrms XLR Input impedance 10 KQ each leg balanced to ground Female XLR 1 Pin 1
23. our Sunfire Dealer immedi ately Gently lift out the unit and remove all the packing material and acces sories It is important to save all the packing materials and the box in case your amplifier ever needs to be moved or shipped for repair Make sure that you keep your sales receipt It is the only way to establish the duration of your Limited Warranty and it may come in useful for insur ance purposes Please take a moment to fill out and mail the Sunfire Customer Response card Also read the serial number located on the rear panel or the under side of the chassis and record it here Serial Purchased at Installation Read and follow all safety instruc tions shown on pages 2 and 3 Observe the following precautions when choosing a location for your Theater Grand Amplifier e Protect it from prolonged exposure to direct sunlight and other direct sources of heat such as heating vents and radiators e Do not expose the unit to rain or moisture If fluid or a foreign object should enter the unit immediately unplug the power cord and contact your Sunfire Dealer e Avoid excessive exposure to extreme cold or dust e Do not place heavy objects on top of the unit e Allow adequate ventilation around the amplifier do not cover the ventilation slots AC Power Considerations Ensure that the unit is plugged into an outlet capable of supplying the cor rect voltage specified fo
24. plifier We hope you enjoy it and the music it makes as much as we have enjoyed creating it for you The TGA 7400 can produce 400 watts rms per channel into 8 ohms and 800 watts rms into 4 ohms The TGA 7200 can produce 200 watts rms per channel into 8 ohms and 400 watts rms into 4 ohms The big breakthrough is the uncanny tracking downconverter which uses 18 Herculean Mosfets in the TGA 7400 and the TGA 7200 This allows the amplifier to produce phenominal power output without the heat generated by conventional designs The circuit boards are heavy glass epoxy double sided with a Faraday shield on the back side All resistors in the signal path are 1 tolerance metal film Critical capacitors are film devices with high dielectric strength and ultra low absorption characteristics An enormous power source built around a massive power transformer provides the ultimate muscle for limitless dynamics We could go on and on but here s the best part we ve included two kinds of outputs on the front left and front right channels 1 a standard voltage source i e near zero impedance output for all typical applications and 2 a higher impedance current source output which many prefer for electrostatic planar magnetic or ribbon speakers Or you can biwire your system with the voltage source driving the woofer s and the current source driving the upper part of the system In many cases this provides by far the best possible interfac
25. r than driving a single speaker Sunfire User s Manual The positive output terminal of the right channel connects to the positive input post of the first speaker and to the positive post of the second speaker The negative output terminal of the right channel connects to the negative input post of the first speaker and to the negative post of the second speaker The total impedance of equal speakers in parallel is found by dividing the impedance of one speaker by the number of speakers For example two eight ohm speakers in parallel is a four ohm load eight ohms divided by two four eight ohm speakers in parallel is a two ohm load eight ohms divided by four Parallel connections are harder on the amplifier than series connections as the total im pedance is lower compared to driving a single speaker and the amplifier must produce more current to drive them You must make sure that the lower impedance does not cause the amplifier to over heat shut down blow the line fuse or pop your circuit break er If this happens you should reduce the number of speakers wired in parallel rewire them in series or use more than one power amplifier 15 APPENDIX Troubleshooting Guide The Sunfire Amplifier is expertly designed and built to provide years of trouble free performance Most prob lems that occur can usually be solved by checking your setup or making sure that the
26. r your model The outlet should be capable of sup plying 15 amps for the 120 V model 8 amps for the 230 V model Care If you need to clean the front sur face first turn off the power and then use a dry soft cloth rubbing with the grain Be careful not to scratch the display window Connection Tips Before setting up your new system please consider the following Always make sure that your components are all unplugged before making or changing connections e Make sure that the power cords of all your components are attached to the same outlet or at least to the same circuit This will reduce the possibility of a ground loop in the system A e Use the XLR inputs if your preamplifier has XLR outputs These balanced connections provide superior noise rejec tion Make sure that the total cur rent draw does not exceed the current rating of your AC outlet or power strip e Whenever possible keep the power cords away from the signal cables or speaker wires to prevent any hum or audio interference being heard in the speakers e Choose reliable hookup cables also called patch cords or RCA cables They should be fully shielded and as short as pos sible for the job e Some patch cords can be a very tight fit and there is usu ally a preferred method of get ting them off Some have to be removed with a twisting action Be gentle or you may damage the jacks of the amplifier or your other compon
27. t misuse abuse of operation contrary to the instructions specified in the Sunfire Corpo ration user s manual c Units where the serial number has been defaced modified or removed d Damage resulting from modi fication or attempted repair by any person not authorized in writing by Sunfire Corporation e Units purchased from unau thorized dealers The Sunfire Corporation War ranty extends to the original owner or subsequent owner s during the five year warranty period so long as the original dated purchase receipt is presented whenever warranty service is required All implied warranties including warranties or merchantability and fitness for particular purposes are lim ited in duration to the five year length of this Warranty unless otherwise provided by state law Sunfire User s Manual Sunfire Corporation s liability is limited to the repair or replacement at our option of any defective prod uct and shall not in any event include property or any other incidental or consequential damages which may result from the failure of this product Some states do not allow limitations on how long an implied warranty lasts and or do not allow the exclusion or limitation of incidental or consequential damages so the above limitations or exclusions may not apply to you This Warranty gives you specific legal rights and you may also have other rights which vary from state to state We suggest that you atta
28. terference or noise on your AC line Make sure there are no large appliances sharing the line or halogen lamps or lamps with dimmer controls Try connecting your system to an other AC socket on a separate line Keep power cords away from au dio cables Do not place the preamplifier di rectly on top of the amplifier If the hum is heard from within the amplifier and not through the speakers this may also be caused by interference on the AC or DC lines The power transformer may turn this interference into an audible noise Internal hum can be made worse by a shelf or cabinet resonating so try moving the am plifier to another shelf Try moving your preamplifier further away from your amplifier Sensitive preamp circuits may pick up hum from the amplifier trans former s magnetic field Try moving your components further away from the TV especially if you ever notice the screen has changed color in the area closest to the component If you have very high efficiency speakers these may show up noise which other speakers may not If you are still having a problem remember that Sunfire s dealers and technical support staff will as sist you Make a list of the things you have tried Poor bass performance Make sure that your preamp does not have the bass level turned down Many surround preamplifiers have controls which can direct all the bass to subwoofers or let your main speakers play the full r
29. the outlet or breaker e Disconnect all cables which come from outside the room and check if the hum goes away This in cludes such connections as cable TV satellite TV or roof top an tennas Make sure that they are disconnected where they first enter the room so they are making no connection to the preamplifier or the TV or any other component If the hum is caused by the cable TV line then you will need a ground loop isolator This is an inexpen sive device fitted in line with the coaxial cable feed Contact your cable company or your Sunfire Dealer for assistance e Disconnect all connections from the preamplifier to your TV VCR or DVD e As a test disconnect any other component which has a grounded power cord NOTE Never remove the A ground pin from any power cords This is very dan gerous e Ifthe hum persists disconnect all the source components one at a time from the back of the preampli fier until you identify the problem e Ground loop isolators are available for audio lines and video You can ask your Sunfire Dealer for assis tance e Try moving the speaker cables away from any power cords Try just one speaker connecting it to each amplifier channel and see if one channel is bad Sunfire User s Manual Check that the interconnect cables to the amplifier do not have any broken connections Other causes of noise Sunfire User s Manual Speaker noise may also be caused by in
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