Sunfire HRS-10 Speaker User Manual
Contents
1. range contain PREAMPLIFIER L R n 7 SB MAIN OUTPUTS Je K AMPLIFIER TO FRONT SPEAKERS Sunfire User s Manual Using the line level high pass outputs If you are using a receiver or processor which does not have a Sub LFE output you can send its left and right front output into the subwoofer s Line Level inputs and then connect the subwoofer s High Pass outputs to the inputs of your amplifier The subwoofer will play the low frequencies and your amplifier and front speakers will play the frequency range above the subwoofer s fixed 70 Hz high pass crossover point Stoned The signals com ing out of the sub woofer s high pass outputs are not affected by any of the controls They are just a copy of the signals going into the subwoofer except that the low bass is filtered out This uses the subwoofer s passive crossover network set at 70 Hz rather than the active network and other controls PREAMP This is an excellent method if your speakers are small satellites or mini monitors and or your power amplifier is gt of limited power such as a tube amp TO FRONT SPEAKERS For the ultimate in computer sound systems connect the left and right audio output from your computer sound card into the subwoofer inputs Connect the sub s high pass outputs to the inputs of your powered speakers You may need some RCA to2. 16 To Prevent Electric Shock do not use this polarized plug with an extension 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 courant sauf si les lames peuvent tre ins r es a fond sans laisser aucune pariie a d couvert 17 Grounding or Polarization Precau tions should be taken so that the ground ing or polarization means of the Com ponent is not defeated This apparatus does not exceed the Class A Class B whichever is applicable limits for radio noise emissions from digital ap paratus as set out in the radio interference regulations of the Canadian Department of Communications ATTENTION Le pr sent appareil num ri que n met pas de bruits radio lectriques d passant las limites applicables aux ap pareils num riques de class A de class B selon le cas prescrites dans le r glement sur le brouillage radio lectrique dict par les ministere des communications du Canada Sunfire User s Manual 18 This equipment has been tested and found to comply with the limits for a Class B digital device pursuant to Part15 of the FCC Rules These limits are designed to provide reasonable protection against equipment off and on the user is encour aged to try to correct the interference by one or more of the fo
3. High Resolution Series Subwoofer HRS 8 HRS 10 and HRS 12 User s Manual 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 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 sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat 8 Unplug this apparatus during lightning storms or when unused for long periods of time 9 Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as a power supply cord or plug is dam aged 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 situ ated 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 equipment rack that may impede the flo
4. e First remove every connection from the subwoofer to the rest of your system Plug the subwoofer power cord back in and check for the hum If it is still there try plugging it into a different outlet in case it is picking up interference on the AC line e If you have followed the above guide lines for the power connections and a hum is still present then there is one very common problem to consider a ground loop introduced by connecting a cable TV line to a VCR or TV which is then connected to the preamp This can be addressed as follows e Disconnect all cables which come from outside the room such as cable TV satellite TV or roof top antennas Make sure that they are disconnected where they first enter the room so they are making no connection to your processor TV or any other component If the hum is caused by the cable TV line then you will need a ground loop 18 isolator This is an inexpensive device fitted in line with the coaxial cable feed If the hum persists disconnect all the source components one at a time from the back of the processor until you iden tify the problem If you are using the subwoofer s line level inputs and there is a excessive amount of noise or hum present try us ing the speaker level inputs as they may yield a lower background noise level e Ground loop isolators are available for audio lines and video Once you have identified which components are causing
5. a problem you can fit the isolators be tween the component and the preamp No auto turn off The subwoofer should turn itself off after approximately fifteen minutes with no audio signal present If not check there is no background hum The subwoofer may sense hum as a small signal and stay on See the above hints to eliminate the hum No auto turn on The subwoofer s volume control may be turned down or no signal is received from your processor e Check the input connections e Check on surround systems to be cer tain that a bass signal is being sent to the subwoofer 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 HRS Subwoofer is in effect for ONE year from the date of original retail purchase The Sunfire Corporation War ranty covers defects in materials and workmanship The following however are excluded a Damage caused during shipment b Damage caused by accident mis use abuse of operation contrary to the instructions specified in the Sunfire Corporation user s manual c Units where the serial number has been defaced modified or removed d Damage resulting from mod
6. receiver Connections to a preamplifier s subwoofer output If your processor or receiver has a subwoofer output Sub LFE it should be connected to the sub woofer s Left input as shown This is the simplest and recommended connection If you have a Home Theater pro cessor or receiver it probably has an independent subwoofer volume and crossover control If so you should set the subwoofer s volume control to 0 dB the crossover to Bypass and use the processor s subwoofer level and frequency con trols for adjustments MAIN OUTPUTS TO FRONT SPEAKERS Sunfire User s Manual 1 1 Connections using Y cables 12 If your processor does not have a Sub LFE output you can use Y cables or Y adaptors its left and right main outputs to both the subwoofer and your amplifier The subwoofer will play the low frequency range and your front speakers will play the full Although bass is commonly distributed evenly between left and right channels L R bass movie soundtracks often differential L R bass If this is not preserved the bass in these scenes sounds anemic The subwoofer utilizes differential gain on the left and right inputs to retain both the L R and L R information Systems that do not have a dedicated Sub LFE output should use both the left and the right inputs as shown for the greatest bass impact to send
7. User s Manual Specifications Amplifier Output Input sensitivity for full 1 000 watts rms output High Cut Filter 240 mVrms from left input with volume control at 0 dB 90 mVrms with volume control fully clockwise 0 48 Vrms from right input with volume control at 0 dB 180 mVrms with volume control fully clockwise Input impedance 30 KQ for Line Level inputs 30 Hz 100 Hz adjustable The crossover can be bypassed by rotating the crossover frequency control fully clockwise Frequency Response HRS 8 22 Hz 100 Hz HRS 10 20 Hz 100 Hz HRS 12 18Hz 100Hz 5 6 KQ for speaker or Hi Level inputs Power Line Voltage Drivers 120 VAC 50 60 Hz version HRS 8 8 203 2 mm 230 VAC 50 60 Hz version HRS 10 10 254 mm HRS 12 12 304 8 mm Dimensions Extra large magnet and long throw HRS 8 10 0 254 mm cubed mechanical design yields very high HRS 10 11 5 292 1 mm cubed back emf The result is extraordinarily HRS 12 13 5 343 mm cubed high operating efficiency that is more acoustic output for each watt of input nee Internal system gain HRS 8 28 Ibs 12 7 kg y g i HRS 10 34 Ibs 15 4 kg 42 dB from left input jack to subwoofer HRS 12 38 llbs 17 2 kg with volume control at 0dB a 54 dB with control fully clockwise Finish 36 dB from right input jack to subwoofer High gloss black cabinet black anod with volume control at OdB ized amp plate black fabric grill 48 dB with control fully clockwise Li
8. hungry user but without distortion or damage to the driver This produces extremely high sound pressure levels SPL in your room without the driver banging against its mechanical stops Sub LFE In this manual the term Sub LFE is used to denote the subwoofer or Low Frequency Effects output commonly found on Home Theater processors and receivers Sunfire User s Manual Control Panel Features 1 High Resolution Series HRS 8 8 Powered Subwoofer Power Indicator This light is bright when the subwoofer is on and dim when the subwoofer is in standby mode Power Switch Press the top of this rocker switch to turn on the subwoofer The subwoofer has an automatic signal detection circuit After approxi mately fifteen minutes with no signal the subwoofer will go into its quiet standby mode The presence of an audio signal will turn it back on Normally you can leave the switch on and let the subwoofer turn on when a signal is present or off when it s not At night or if you go out or on vaca tion you can press the bottom of the power switch to turn the subwoofer off 3 IEC Power Connector The subwoofer comes with a detach able linecord that attaches here Make sure it is firmly pushed into place Connect the other end to an AC outlet that is properly configured for the type of plug and has the correct voltage for your model AC Line Fuse The subwoofer is su
9. mini plug adaptors to make the connections Adjust the sub s volume control to match low powered speakers See the note about magnetic fields on page 10 Sunfire User s Manual 1 3 Using the speaker level inputs If you are using a receiver which does not have a subwoofer output or line level outputs pre outs you can connect its speaker outputs to the subwoofer s speaker level inputs The front speakers can still be connected to your receiver The subwoofer s internal amplifier supplies the power to reproduce the low frequency range It receives a sample of the signal going to your front speak ers An insignificant fraction of your receiver s power is transferred SS to the RECEIVER subwoofer MAIN 2 There is no OUTPUTS ye PX need to use L R the speaker level inputs if you are using a separate preamplifier processor and a power amplifier Such systems are best connected using the line level inputs as shown in the H F previous diagrams However if TO FRONT SPEAKERS you are using the line level inputs and there is a excessive amount of noise or hum present using the speaker level inputs may yield a lower background noise level The subwoofer s two negative posts are joined internally com mon grounded Your receiver pow er amplifer must also be internally common grounded or you cannot use this connection Contact the manufacturer of your receiver to make su
10. nanain K iniata 9 LOC ALON sacicsm irase EE 10 System Configurations 0cneeeeees 11 Adjusting the Controls 0 ccceeeece 15 Specifications cece eeeeeeeeeeeeeeeees 16 Troubleshooting Guide 2 cccsescecceees 17 Limited Warranty ccccccsssscceenceeeeeeseeees 19 Service Assistance ccccceeccceeeeeeeeeeeeeees 19 To find out more about this and other Sunfire products please visit our website www sunfire com Sunfire User s Manual 3 Introduction Thank you for purchasing a Sunfire High Resolution Series Subwoofer We hope you enjoy it and the music it makes as much as we have enjoyed creating it for you The big breakthrough features of the subwoofer are its uncanny 1 000W Track ing Downconverter amplifier and its long throw High Back emf woofer These powerful forces combine to produce as much bass as several 15 inch drivers mounted in a cabinet the size of a small refrigerator And the High Resolution Series extended frequency response means that your subwoofer is the perfect match to virtually any loudspeaker Unpacking Your Sunfire subwoofer should reach you in perfect condition If you do notice any shipping damage please contact your Sunfire Dealer immediately Gently lift out the unit and remove all the packing material It is important to save all the packing materials and the box in case your subwoofer ever needs to be moved or shippe
11. anana type connec tors on your speaker wire tighten the binding posts before inserting Make sure that the negative speaker wires never touch the posi tive wires This will short out and possibly damage your amplifier or receiver The subwoofer s two negative posts are joined internally com mon grounded Your amplifier or receiver must also be internally common grounded or you cannot use this connection Contact the manufacturer of your amplifier or receiver to make sure its outputs are common grounded Location Here is a neat trick to find the best subwoofer location for your room 1 Start by placing it right on the seat of your favorite couch or easy chair This method is odd but it is based on principles of acoustic physics 2 Ifthe subwoofer is part of a Home Theater system you can use the calibration test tone pink noise usually found in the processor receiver s setup menu or you can simply plug the outputs from a CD player directly into the subwoofer s line level inputs remembering to turn down the volume level on the subwoofer first and then play ing some of your favorite music samples containing heavy bass 3 Walk around the room listening Stand in all the locations where you might place the subwoofer Try crouching down particularly in the corners Find the place where the subwoofer s bass output sounds the loudest 4 Turn off the subwoofer and discon nect it from the powe
12. ass that you can feel as well as hear There are three models in the high resolution series the HRS 8 HRS 10 and the HRS 12 The number represents the driver diameter in inches The control panel connections and operation are the same for each subwoofer model and this manual covers all three models Each subwoofer has controls for adjust ing the crossover frequency phase and volume They also have line level and speaker level inputs for easy incorpor ation into existing systems or as part of a subwoofer satellite speaker combination The Driver To have lots of bass requires the move ment of lots of air To achieve this the subwoofer s driver has been designed to travel back and forth approximately five times further than a normal driver This gives lots of air movement and massive bass performance The Tracking Downconverter Amplifier The large movement range of the driver generates greater air pressure inside the box than a conventional driver In order to create this range of movement we designed a drive amplifier that is much more powerful than an ordinary amplifier A signal compressor circuit kicks in automatically if the input signal level reaches a level that would overload the driver This maintains a ceiling on the output without clipping If the input signal is driven even further a soft clipping circuit is enabled This allows the driver to put more sound into the room to satiate the power
13. bwoofer LFE output to the subwoofer s left and right inputs Try moving the subwoofer to a different location See Location on page 10 Placing it in a corner will maximize the bass output and give the smoothest possible response Home Theater processors usually have a way of adjusting the level of the subwoofer LFE output either using a remote control or with a small volume knob on the back panel Make sure that this is adjusted correctly Check that your processor or receiver s sub output is turned on Some systems only have a sub output signal when the front speakers are set to small If the processor s Sub LFE output has an adjustable crossover frequency make sure that the subwoofer s own crossover point is set to Bypass or part of the bass range may be missing Not enough bass ina 5 1 system 5 1 Home Theater processors usually have a bass management system which allows the bass to be redirected among your speakers For example the bass normally present in the front speak ers can be redirected to play in the subwoofer or the subwoofer can play the bass from all the speakers in addi tion to its dedicated LFE low frequency effects channel Make sure that all of the bass management options are cor rectly set The processor may have a way of turning the subwoofer output off entirely so check that it is always on Check that the processor calibration procedure is correctly adjusted Usually the p
14. d 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 insurance purposes Please take a moment to fill out and mail the Sunfire Customer Response card Also read the serial number located on the control panel and record it here Features Patented high pressure High Back emf extra long throw design High efficiency Tracking Downconverter amplifier Low distortion Premium quality driver Extremely compact size Automatic signal sensing turn on and standby mode Line level inputs Speaker level binding post inputs Line level high pass outputs Phase control Crossover frequency control Volume control Soft clipping circuit allows graceful overload and prevents speaker dam age due to clipping Care To maintain the speaker cabinet s fin ish first unplug the power cord and then use a soft cloth to clean the surfaces If your Sunfire subwoofer needs ser vicing please read the troubleshooting section on page 21 If a problem persists contact your nearest authorized Sunfire Dealer Serial Number Purchased from Sunfire User s Manual Overview The Sunfire HRS subwoofers are designed to give you the best possible low frequency sound quality for your Home Theater and music playback expe rience They incorporate a tremendously powerful built in amplifier to produce tight seismic denture rumbling b
15. e with their kind permission You will need a test CD with low fre quency warble tones and a sound pres sure level meter The Radio Shack SPL meter will do fine as will the Stereophile test CD Step 1 Disconnect the subwoofer and run the main speaker with a tone in its passband 80 100 Hz Measure the level Step 2 Disconnect the main speaker and reconnect the subwoofer Set the subwoofer to its highest crossover frequency Set the volume control of the subwoofer to give the same sound pres sure level with the same tone you used in Step 1 Step 3 With both the subwoofer and the main speaker connected measure the level of the tones at the available frequencies Because the crossover is set too high you will have a peaked response Adjust the crossover control to get the smoothest response Note Some Home Theater processors and receivers have an internal crossover adjustment which allows you to vary how much of the bass frequency range is sent to the subwoofer In these systems it is recommended that you set your subwoofer s own crossover control to maximum frequency or Bypass You can then make any crossover frequency adjustments using your Home Theater processor or receiver controls If the subwoofer s internal crossover is set to a frequency lower than the one on your Home Theater processor or receiver there would be a hole in the mid bass and bass information would be missing Sunfire
16. ervice 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 98290 Tel 425 335 4748 Fax 425 335 4746 You will be directed to an authorized 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 RA Include a complete description of the problem indicating how you have it connected the associated equipment in your system and a copy of your purchase receipt Initial shipping costs are not paid by Sunfire Corporation return ground shipping costs will be prepaid if repairs were covered by the scope of this War ranty Sunfire User s Manual High Resolution Series Subwoofer HRS 8 HRS 10 and HRS 12 Sunfire Corporation P O Box 1589 Tel 425 335 4748 Snohomish Fax 425 335 4746 WA 98291 www sunfire com Manual part number 913 140 00 Rev B
17. ification or attempted repair by any person not authorized in writing by Sunfire Corporation e Units purchased from unauthorized dealers The Sunfire Corporation Warranty ex tends to the original owner or subsequent owner s during the one year warranty period so long as the original dated purchase receipt is presented whenever warranty service is required All implied warranties including war ranties or merchantability and fitness for particular purposes are limited in duration to the one year length of this Warranty unless otherwise provided by state law Sunfire Corporation s liability is limited to the repair or replacement at our op tion of any defective product and shall not in any event include property or any other incidental or consequential dam ages 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 attach your purchase receipt to this Warranty and keep these in a safe place Thank you for your choice of a Sunfire Corporation product Service Assistance We suggest that you read the Limited Warranty completely to fully understand your Warranty S
18. llowing measures Reorient or relocate the receiving antenna Increase the separation between the harmful interference in a residential instal lation This equipment generates uses and can radiate radio frequency energy and if not installed and used in accor dance with the instructions may cause harmful interference to radio communica tions However there is no guarantee that interference will not occur in a particular equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help 19 Caution Changes or modifications not installation expressly approved by Sunfire could void If this equipment does cause harmful inter the user s authority to operate this equip ference to radio or television reception ment which can be determined by turning the A WARNING THIS SUBWOOFER IS CAPABLE OF PRODUCING VERY HIGH SOUND PRESSURE LEVELS YOU MUST TAKE EVERY PRECAUTION TO PROTECT YOUR HEARING FROM PERMANENT DAMAGE Contents Safety Instructions seesriseesrrrrreneserssesess 2 Introduction ooo cece cecc cee ecceeeessueessueeeesueeeeuuaeees 4 Features ss8s steels eb eitectetsas eacaenuyheee 4 OVESPVICW uu ec ccceccceeccceeeeeeeceseueeeeeeeeeeaueeeeeeeeeuses 5 Control Panel Features ccccceeeseeeeeees 6 Installation onanera a 8 CONNECTIONS 0 0 cece nirin nara n
19. lowing when set ting up your new system Sunfire User s Manual Before making or changing any connections ALWAYS make sure that the subwoofer and your other components are turned OFF Turn down the volume control of both the subwoofer and your processor or receiver Tape Deck Power strip Amplifier S A Pa AC outlets on the same circuit breaker This diagram shows all the low power components sharing a power strip which is connected to the same outlet used by the main power amplifier The subwoofer is connected to an outlet on the same circuit breaker provided that the total system current draw does not exceed the breaker current rating Whenever possible keep the power cords away from the signal cables or speaker wires to prevent hum or interference Subwoofer C A Choose reliable high quality interconnect cables They should be fully shielded and as short as possible for the job The longest cable in your system will likely be to the subwoofer so choose a good quality brand Some cables can be a very tight fit and there is usually a preferred method of removing them Some have to be removed with a twisting action Be gentle as twisting may cause damage to the jacks of the subwoofer or your other compo nents SRPA INE connections The subwoofer s speaker level in puts can accept speaker wires with banana dual banana or bare wire If you have b
20. ne power consumption 600 watts average at maximum continu ous output 18 to 100 Hz 2 000 watts peak time limited basis Output levels Peak SPL including room gain HRS 8 102 dB HRS 10 105 dB HRS 12 108 dB 2007 Sunfire Corporation All rights reserved Sunfire Corporation reserves the right to improve its products at any time Therefore specifications are subject to change without notice Manual 913 140 00 Rev B 1 6 Sunfire User s Manual Troubleshooting This subwoofer has been designed and built to provide years of trouble free performance Most problems that occur can usually be solved by checking your setup or by making sure that the compo nents connected to the amplifier are on and fully operational The following information will help you deal with common problems you may ex perience during normal use If a problem persists please contact your Dealer for assistance Not enough bass Sunfire User s Manual Check that your processor s outputs are connected to the subwoofer s line level inputs and not to the line level high pass outputs If they are connected to the outputs by mistake the bass will be weak but the subwoofer will still func tion If your processor has a single sub woofer LFE output jack make sure it connects to the subwoofer s Left input If the bass is still not enough after checking all the remaining points use a Y cable to connect the processor s single su
21. pplied with a conservative slow blow type fuse to protect the electronics If this fuse fails replace it with the exact same type and current rating for your local AC voltage as marked on the control panel near the fuse holder Note Always unplug the power AN cord from your AC outlet before removing the fuse To replace or inspect the fuse use a small flat ended screwdriver to gently pry out the fuse carrier and fuse Speaker Level Inputs If you are using a receiver which only has speaker level outputs you can connect it using the speaker level inputs see the hookup diagram on page 14 They can accept bare wire banana or dual banana connectors If you experience excessive noise or hum using the line level inputs try us ing the speaker level inputs This may lower the background noise level Sunfire User s Manual Sunfire User s Manual Line Level Inputs These connect with RCA type cables from the line level outputs of your receiver or preamp Here are two examples If your processor or receiver has a single subwoofer output connect it to the subwoofer s left input jack see page 11 There is no need to use the subwoofer s right input jack If your processor does not have a subwoofer output use Y adapters at the processor outputs see page 12 In this way you can send the processor s full range output signals to your main amplifier and to the subwoofer at the same time High Pass Out
22. puts Signals from these output jacks are a direct copy of the signals going into the input jacks of the subwoofer with the exception that the bass below 70 Hz has been removed by a fixed high pass crossover circuit This handy feature lets the subwoofer control all the bass in your system and you can use an external amplifier and smaller satellite speakers to control the mids and highs See the hookup diagram on page 13 We recommend using this high pass function with small main satellite speak ers that are not designed to reproduce low frequencies If you are used to the sound from smaller speakers this op tion will really bring your system alive If your main speakers are capable of operating full range you will not need to use the high pass function 10 Crossover Frequency This controls the crossover frequency between 30 Hz and 100 Hz If it is set to 30 Hz for example the subwoofer will reproduce those frequencies below 30 Hz Rotating the control clockwise will smoothly increase this frequency range up to 100 Hz In the bypass position the crossover control has no effect You should set this to bypass if your processor has its own subwoofer crossover frequency control If your processor does not have its own subwoofer crossover frequency control rotate this control until the bass sounds natural If the mid bass sounds natural but you want more low bass turn the crossover frequency down a little then t
23. r and from your processor receiver or CD player Next install the subwoofer in the location you have just deter mined is best and remake all your connections Although low frequencies are non di rectional factors such as room reflec tions standing waves resonance and ab sorption will strongly affect your subwoof er s performance Moving the subwoofer from one location to another can have a major effect on the bass response Magnetic Fields Remember to keep the subwoofer A at least two or three feet away from any TV screen computer VCR or magnetic tapes and discs This will reduce the chance of the magnetic fields upsetting the TV screen or erasing your magnetic media Using two Subwoofers If you wish to use two subwoofers the sound output will double an increase of 6 dB Locate the subwoofers with one in each corner and experiment with the location and phase control to achieve the best bass response Always drive each subwoofer through the left line level input even though you are driving one subwoofer with a right channel drive and the other with a left channel drive If your preamplifier has a single sub LFE output use a Y cable to split it into two outputs Sunfire User s Manual 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 Sunfire Subwoofer are connected to your preamplifier or
24. re its outputs are common grounded 1 4 Sunfire User s Manual Adjusting the controls There are two main methods for adjust ing the volume crossover frequency and phase controls to match a system e Preferred method By listening and making the adjustments to suit your taste e Laboratory method By measur ing the output with a microphone and adjusting for a flat frequency response Excellent results can be obtained if you Step 4 Use the phase control to make the response even smoother It has its biggest effect at the crossover frequency You can iterate between the crossover and the phase controls Keep your hands off the volume control It was set correctly in step 2 Step 5 Listen to the subwoofer Resist all temptations to turn up the volume control Play something with really deep bass to confirm that your subwoofer is working make the adjustments based on simply listening This is our preferred method as it allows the system to be voiced based Record your favorite settings here on what sounds the best whereas labo ee PRASE VOLUME ratory flat frequency response can often i i iti NORMAL be clinical and less than exciting 65 HZ 90 odB The following procedure is for those who prefer a more methodical and scien N tific approach This excerpt is from The Audio Critic issue 24 page 31 written 100 HZ by contributing editor David Rich and is 30HZ BYPASS 0 180 MIN MAX reprinted her
25. reamp will send a test tone through all the speakers in your system allowing you to adjust trim the volume of each channel until they are all playing at the same level If the bass is weak only when playing 5 1 surround sources check that your processor is correctly set to decode the 5 1 surround modes such as Dolby Digital or DTS Some DVD discs have a menu which allows you to select which soundtrack to play Check that the correct 5 1 surround audio soundtrack is selected otherwise it may just play stereo into your preamp and you won t get the true LFE signal into the subwoofer Hum Adding any component such as a sub woofer to an existing system will often give rise to a hum which wasn t there before Your first thought may be that the subwoofer has a problem but this is more than likely caused by a ground loop in your system Follow these steps to isolate the main cause of the ground loop hum there may even be more than one cause e Try to have all of your equipment on the same electrical outlet or circuit pro vided that the total current draw does not exceed the current safety rating of the outlet or circuit e If your subwoofer is a fair distance away from your other equipment you may use a 15 amp extension cord as long as it has a ground connection e Turn off all components in your system including the subwoofer amplifiers and the processor before disconnecting or connecting cables
26. t e Do not place heavy objects on top of the unit Do not place the subwoofer with its control panel against the floor e Allow adequate ventilation around the metal control panel of the subwoofer e Let nothing come into contact with the panel and keep it at least two inches away from any walls The metal control plate serves as the amplifier heat sink and also removes internal heat to the outside and into the atmosphere It can reach temperatures of 60 degrees C which feels hot to the touch AC Power Considerations Ensure that the subwoofer is plugged into an outlet capable of supplying the correct voltage specified for your model Unplug your subwoofer s power cord from the electrical outlet whenever you leave the subwoofer unused for a long period of time A Route the power supply cord away from areas where it is likely to be walked on or pinched by items placed upon it or against it especially near the AC wall socket any multi power strips or near where the IEC cord attaches to the component Note Never remove the ground pin from any power cords This is very dangerous Magnetic Fields We recommend that you place your subwoofer further than two feet away from your TV VCR tape deck or com puter so the speaker s magnet won t distort the colors of your TV picture or erase your video tapes audio tapes or computer discs Sunfire User s Manual Connections Please consider the fol
27. urn the volume up by about the same amount This increases the low bass output while leaving the mid bass output the same Phase This controls the relative phase of the subwoofer with respect to your other speakers Use this to help blend the subwoofer with the rest of your system Adjust the control in small increments as you listen for the most bass at your listening position As a final trim readjust the crossover frequency and volume controls after the phase control has been set Volume This control lets you match the output level of the subwoofer to the level of your satellite main speakers The subwoofer output will increase as this control is rotated clockwise When installing your system turn this down first before turning on your subwoofer to prevent any loud surprises Installation Observe the following general precau tions and read the safety instructions on pages 2 and 3 before using your Subwoofer e Never open the cabinet or remove the metal control panel as this might result in an electrical shock to you or damage to the unit e Protect the subwoofer from prolonged exposure to direct sunlight and other direct sources of heat such as heating vents and radiators e To prevent fire or shock do not expose the unit to rain or moisture If fluid or a foreign object should enter the unit immediately turn off the power and contact your Dealer e Avoid excessive exposure to extreme cold or dus
28. w of air through ventilation openings 11 Power Sources The apparatus should be connected to a power supply only of the type described in these operation instructions or as marked on the apparatus 12 Power Cord Protection Power 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 particu lar attention to cords at plugs convenience 2 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 receptacles and the point where they exit the apparatus 13 Non use Periods The power cord of the apparatus should be unplugged 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 described in this operating manual All other servicing should be referred to qualified service personnel
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