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Sunfire True Subwoofer EQ User's Manual
Sunfire True Subwoofer EQ is the most powerful and advanced subwoofer on the market. With its 2,700 watt, high efficiency amplifier and very low distortion, it can deliver deep, powerful bass that will add a new dimension to your music and movies. The True Subwoofer EQ also features Automatic Room Equalization mode, which uses a measurement microphone to automatically adjust the subwoofer's settings for optimal performance in your room.
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DIM - STANDBY BRIGHT - ON True Subwoofer DIM - STANDBY BRIGHT - ON Signature and Standard Edition User's Manual Safety Instructions 9. Power Cord Protection — Power-supply cords should be routed so that they are 1. Read Instructions -– All the safety and not likely to be walked upon or pinched by operation instructions should be read before items placed upon or against them, paying the SunÞre Component is operated. particular attention to cords at plugs, con2. Retain Instructions — The safety and venience receptacles, and the point where operating instructions should be kept for they exit the Component. future reference. 10. Cleaning — The Component should 3. Heed Warnings — All warnings on the be cleaned only as recommended in this Component and in these operating instrucmanual. tions should be followed. 11. Non-use Periods—The power cord of 4. Follow Instructions — All operating and the Component should be unplugged from other instructions should be followed. the outlet when unused for a long period of time. 5. Water and Moisture — The Component should not be used near water - for 12. Object and Liquid Entry — Care example, near a bathtub, washbowl, kitchen should be taken so that objects do not fall sink, laundry tub, in a wet basement, or near into and liquids are not spilled into the ina swimming pool, etc. This Component is side of the Component. Do not expose the intended for use in Moderate climates. Do Component to dripping or splashing from not use in Tropical climates. liquids. Do not place objects Þlled with liquids on top of, or near the Component. 6. Ventilation — The Component should For example, no vases, glasses of wine, be situated so that its location or position or cans of pop. does not interfere with its proper ventilation. Ensure a minimum distance of 2 inches 13. Damage Requiring Service — The (5 cm) around the Component for sufÞcient Component should be serviced only by ventilation. For example, the Component qualiÞed service personnel when: should not be situated on a bed, sofa, rug, A. The power-supply cord or the plug has or similar surface that may block any ventibeen damaged; or lation; or placed in a built-in installation such B. Objects have fallen, or liquid has spilled as a bookcase or cabinet that may impede into the Component; or the ßow of air. Ensure that the ventilation is C. The Component has been exposed to not impeded by covering the control panel rain; or with items such as newspapers, table-cloths, D. The Component does not appear to opercurtains, shaggy dogs, sleeping cats etc. ate normally or exhibits a marked change 7. Heat and Flames — The Component in performance; or should be situated away from heat sources E. The Component has been dropped, or its such as radiators, or other devices which cabinet damaged. produce heat. Do not place naked ßame sources, such as lighted candles on top of, 14. Servicing — The user should not ator near the Component. tempt to service the Component beyond those means described in this operating 8. Power Sources — The Component should manual. All other servicing should be be connected to a power supply only of the referred to qualiÞed service personnel. type described in these operation instructions or as marked on the Component. 2 User's Manual 15. 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 préevenir les chocs électriques ne pas utiliser cette Þche polariseé avec un prolongateur, un prise de courant ou une autre sortie de courant, sauf si les lames peuvent être insérées à fond sans laisser aucune pariie à découvert. 16. 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 applicable) limits for radio noise emissions from digital apparatus as set out in the radio interference regulations of the Canadian Department of Communications. ATTENTION — Le présent appareil numérique n'émet pas de bruits radioélectriques dépassant las limites applicables aux appareils numériques de class A/de class B (selon le cas) prescrites dans le règlement sur le brouillage radioélectrique édicté par les ministere des communications du Canada. 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.........................................2 Introduction ...................................................4 Features ........................................................4 Unpacking and Care .....................................4 Overview .......................................................5 Control Panel Features .................................6 Installation .....................................................9 Connections ................................................10 Location ......................................................11 Room Equalization Procedure ....................12 System ConÞgurations ................................14 Adjusting the Controls .................................18 SpeciÞcations (Signature Edition) ...............19 SpeciÞcations (Standard Edition) ................20 Troubleshooting Guide ................................21 Limited Warranty .........................................23 Service Assistance ......................................23 To Þnd out more about this and other SunÞre products, please visit our website: www.sunÞre.com User's Manual 3 Introduction • 2,700 watt, high efÞciency ampliÞer Thank you for purchasing my SunÞre True Subwoofer EQ. I hope you enjoy it and the music it makes as much as I have enjoyed creating it for you. • High gloss, dark rosewood Þnish • Automatic Room Equalization mode • Measurement Microphone included • Very low distortion The big breakthrough features of the subwoofer are its uncanny tracking downconverter, its long throw, high back-electromotive force driver, and its fully automatic room equalizer. Taken together, they provide this subwoofer with as much bass as you could get from several 15 inch drivers mounted in a cabinet the size of a small refrigerator. • Long throw, premium quality drivers • Stunning output from a small cube! • Automatic signal-sensing turn-on and standby mode • 12 VDC trigger input for remote turn-on • Balanced XLR input • Line level unbalanced inputs • Speaker level binding post inputs • Line level high-pass outputs • Continuously variable phase control • Continuously variable crossover frequency adjustment, 35 to 100 Hz • Continuously variable volume level control • Soft clipping circuit allows graceful overload and prevents speaker damage due to clipping • Gold-plated inputs and outputs. Dear Friend: Unpacking Your SunÞre Subwoofer should reach you in perfect condition. If you do notice any shipping damage, please contact your SunÞre 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 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 insurance purposes. Please take a moment to Þll out and mail the SunÞre Customer Response card. Also read the serial number located on the control panel and record it here: Serial Number: Purchased from: Date: 4 Features Care To maintain the speaker cabinet’s Þnish, Þrst unplug the power cord and then use a soft cloth to clean the surfaces. To keep the large rubber surrounds soft and supple for 20 years or more, treat them with MINK OIL, available at most shoe repair stores. Unplug the power cord, and rub a generous amount into the surrounds with a soft cloth about once a year (more often if you live in a dry climate). If your SunÞre Subwoofer needs servicing, please read the Troubleshooting section on page 21. If a problem still persists, contact your nearest authorized SunÞre Dealer. User's Manual Overview Your SunÞre True Subwoofer EQ is designed to give you the best possible low-frequency sound quality for your Home Theater experience. It incorporates a tremendously powerful built-in ampliÞer and a pair of drivers to produce tight, ßoor-rumbling, denture-rattling bass that you can feel as well as hear. The subwoofer is available in two versions, and this manual covers both: Signature Edition is a 13 inch cube, with an output greater than 116 dB peak SPL, 16 Hz to 100 Hz. Standard Edition is an 11 inch cube, with an output greater than 110 dB peak SPL, 18 Hz to 100 Hz. The subwoofer has an automatic equalization system which will tailor the subwoofer output to compensate for any room effects. It also has a manual equalization mode. The subwoofer has an adjustable high cut Þlter and a choice of speaker-level or line-level inputs for easy incorporation into existing systems, or as part of a subwoofer/satellite speaker combination. Controls for adjusting the volume, crossover frequency and phase, allow the subwoofer to be perfectly matched to any listening environment and audio components. The Drivers To have lots of bass requires moving lots of air. Your SunÞre Subwoofer incorporates two drivers that can move back and forth approximately Þve times more than a normal subwoofer. This gives it a lot of air moving capacity which allows for majestic bass performance. Two drivers share the acoustic output. Sometimes one driver appears to be moving more than the other. They both move the same amount only when op- User's Manual erating at the limit of their excursion and power output, or when bass requirements and music requirements demand maximum output from the system. Otherwise, the power is shared between the two drivers in a way that depends on the momentary amplitude and the momentary musical spectrum. It is normal for one or the other to move more or less than its mate during operation. The AmpliÞer The large movement range of the drivers creates greater air pressure inside the box than a conventional subwoofer. Therefore, the drive ampliÞer must be much more powerful than an ordinary subwoofer ampliÞer. In fact, it has to be so powerful, it is almost hard to believe. The power ampliÞer within your SunÞre Subwoofer is capable of delivering over 2,700 watts into a 3.3 ohm resistor (the driver voice coil resistance). When the same full output is applied to the driver, however, the enormous back-electromotive force generated as a consequence of its large motion and giant magnet, causes the current ßow to be much less than if it were a 3.3 ohm resistor. It is this singular property of the driver that allows the subwoofer to be approximately ten times more efÞcient than a subwoofer this size would normally be. A 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 subwoofer to put more sound into the room to satiate the power hungry user, but without distortion or damage to the subwoofer. Thus, for explosive scenes in movies, this produces extremely high sound pressure levels (SPL) in your room without the drivers banging against the mechanical stops. For more details of the subwoofer design, please call us or view our website: www.sunÞre.com. 5 Control Panel Features 15 14 13 12 1 2 3 4 5 6 DIM - STANDBY BRIGHT - ON 11 7 10 9 1. 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 you have just installed your system, turn this down Þrst before turning on your subwoofer. This will prevent any loud surprises. 2. Crossover Frequency 6 8 3. Phase Control This control changes the relative phase of the subwoofer with respect to your other speakers. Use this control to help blend the subwoofer with the rest of your system. This is accomplished by adjusting the control in small increments as you listen for the most bass at your listening position. As a Þnal trim, readjust the Crossover Frequency and Volume controls after the Phase has been set. This controls the high frequency cutoff point. With the control set to the 100 Hz mark, the subwoofer will reproduce frequencies up to 100 Hz. If the control is set fully clockwise, the crossover is bypassed and the subwoofer will reproduce a wide frequency range. With the control fully counter-clockwise the subwoofer reproduces a narrow range, up to 30 Hz. 4. Trigger Inputs Rotate the control until the bass sounds natural. If the mid-bass sounds natural but you want more low bass, turn this control down a little, then turn the Volume control up by about the same amount. This increases the low-bass output while leaving the mid-bass output the same. 5. Outputs These two inputs can be used to automatically turn on the subwoofer. To do this, connect 12 VDC to either of these terminals. Some Home Theater preampliÞers, such as the SunÞre Theater Grand II and III, have matching 12 VDC Trigger outputs. When they are turned on, the subwoofer will turn on. Line level high-pass output signals are available at these jacks. These outputs are active whenever a signal is hooked up to the line level inputs of the subwoofer. This crossover is a User's Manual passive network with a Þxed crossover frequency of 70 Hz and a 6 dB per octave slope. We recommend using this high-pass function with main/satellite speakers that are small and not designed to reproduce low frequencies. If your main speakers are capable of operating full range, then you will not need to use the high-pass function. To use the high-pass outputs, connect the preamp outs on your preamp/ receiver to the subwoofer’s line level inputs using good quality RCA type patch cords. Then connect a second patch cord from the subwoofer’s outputs to the inputs of your main ampliÞer. This will allow your main speakers to operate at frequencies above 70 Hz and the subwoofer to operate at frequencies below 70 Hz (see page 16). 6. Line Level Inputs Connect these unbalanced inputs with RCA type patch cords to the line level outputs of your receiver or preamp. If your preampliÞer or receiver has a single sub/LFE output, connect it to the subwoofer’s left input jack (see page 14). There is no need to use the subwoofer’s right input jack. If you want to run your main/satellite speakers full range, use a “Y” adapter at the preampliÞer outputs (see page 15). In this way, you can send the preampliÞer’s output signal to your main ampliÞer and to the subwoofer at the same time. 7. Balanced (XLR) Input Use this balanced input to connect to the balanced line-level output of a Home Theater preampliÞer or other source. Balanced connections offer superior noise cancellation over unbalanced connections, so if your preamp has an XLR subwoofer output, we recommend using it. User's Manual 8. Speaker Level Inputs Under normal conditions, the preferred connection is through the line level inputs. If this is difÞcult or not possible in your system, then you can use the speaker level inputs. Also, if you experience excessive noise or hum with the line level inputs, often a simple change to the speaker level inputs will result in a lower background noise level. Connect the speaker level inputs to the speaker-level outputs of your ampliÞer or receiver using speaker wire. The binding posts can accept bare wire, banana, dual-banana or spade connections. Your ampliÞer or receiver MUST have common grounded outputs, or it will be damaged if connected to the subwoofer’s speaker level inputs. 9. Line Fuse The subwoofer is supplied with a conservative slow-blow type fuse to protect the electronics. Always unplug the power cord before inspecting or changing the fuse. Never use a fuse with a larger current rating than shown on the markings next to the fuseholder. 10. IEC Linecord socket The subwoofer comes with a detachable linecord which connects here. US (120 VAC) MODEL: Connect the linecord to the subwoofer before connecting the other end to an 120 Volt, 60 Hz AC outlet. The outlet must have a circuit rating of 8 amps or more (a typical home circuit is rated at 15 amps). Never plug the US (120 VAC) Model subwoofer directly into 220-240 Volts AC as this will cause catastrophic circuit failure. 7 Control Panel Features continued 15 14 13 12 DIM - STANDBY BRIGHT - ON 11 EURO (230 VAC) MODEL: Connect the linecord to the subwoofer before connecting the other end to a 230 Volt, 50/60 Hz AC outlet. The outlet must have a circuit rating of 8 amps or more. Never plug the Euro (230 VAC) model subwoofer directly into 120130 Volts AC. 11. Power Switch The power switch is a CE requirement for international shipments. Leave it switched on at all times for normal operation. After a period of inactivity (i.e. with no input signal), the subwoofer will automatically turn itself to Standby mode, where it is effectively off. It can however, turn back on automatically when an input signal is applied, if a 12 VDC trigger voltage is applied to the Trigger inputs, or if the Start button is pressed. 12. Start button Press this once to enter the Auto EQ mode (if the sub is out of Standby mode). Press and hold down for 8 several seconds to enter the Manual EQ mode. See page 12 for more details on this and the following EQ controls. 13. Microphone Input This is where you plug in the supplied linear measurement microphone when you want to use the Auto EQ mode. 14. LED display These LEDs are used during the Auto EQ and Manual EQ procedures. 15. Equalizer Authority This control's primary purpose is to adjust the EQ Authority. During normal listening, you can adjust the overall EQ from none (ccw, 0%), to fully equalized (cw, 100%). For example, if your Þrst band has a 6 dB boost, setting this control to 50% would make it boost only 3 dB. This control is also used during the Manual EQ mode to adjust each of the four internal EQ bands, and allow you to add "color" to the sound as desired. User's Manual Installation Observe the following general precautions and read the safety instructions on pages 2 and 3 before using your SunÞre Subwoofer. • • • 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. Protect it from prolonged exposure to direct sunlight and other direct sources of heat, such as heating vents and radiators. To prevent Þre or shock, do not expose the unit to rain or moisture. If ßuid or a foreign object should enter the unit, immediately turn off the power and contact your SunÞre Dealer. • Avoid excessive exposure to extreme cold or dust. • Do not place heavy objects on top of the unit. • Do not place the subwoofer with its control panel against the ßoor. • If you wish to place your subwoofer so the drivers face the ßoor and ceiling, thereby moving up and down, use at least 1-1/2 inch high spikes or feet for support. They may be attached either with screws or self-stick backing. This arrangement will impart substantial house and ßoor shaking motion. • Four extra heavy, shock absorbing rubber mounting feet have been included. If your subwoofer tends to wander about slightly while in use, place these feet just inside the existing feet positions. These shock absorbing mounts will let the subwoofer rock freely, thereby absorbing low frequency rocking energy, allowing it to adhere solidly to the ßoor. User's Manual • To move the subwoofer along the ßoor, rotate it onto one edge onto a plastic sheet or bag, and it will slide along easier. Heat rise • Allow adequate ventilation around the metal control panel of the subwoofer. • Do not let anything come into contact with the panel and keep at least two inches away from any walls. The metal control plate serves as the ampliÞer heat sink and also as a conduit to remove internal heat to the outside and into the atmosphere. It can reach temperatures of 60 degrees C, which will feel hot to the touch, using nerves of ßesh and blood as temperature sensors. As uncomfortable as it may feel, 60 degrees C cannot burn you, and in fact is almost cool to copper, silicon, steel, and aluminum, the materials from which your subwoofer is constructed. AC Power Considerations Ensure that the unit is plugged into an outlet capable of supplying the correct voltage speciÞed for your model. Unplug your subwoofer’s power cord from the electrical outlet if it will be left unused for a long period of time. Route the power-supply cord so it is not likely to be walked on or pinched by items placed upon or against it, especially at plugs, convenience receptacles, and the point where it exits from the unit. Magnetic Fields We recommend that you place your subwoofer further than two feet away from your TV, VCR, tape deck or computer, so the speaker’s magnet won’t distort the colors of your TV picture or erase your video tapes, audio tapes or computer discs. 9 Connections Please consider the following when setting up your new system : • Before making or changing any connections, ALWAYS make sure that the subwoofer and your other components are turned OFF. Also turn down the volume control of the subwoofer and your preampliÞer or receiver. • Whenever possible, keep the power cords away from the signal cables or speaker wires to prevent any hum or interference being heard in the speakers. • Choose reliable, high quality interconnect cables, also called patch cords or RCA 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 patch cords can be a very tight Þt and there is usually a preferred method of getting them off. Some have to be removed with a twisting action. Be gentle or you may damage the jacks of the subwoofer or your other components. Tape Deck DVD Preamplifier Power strip Amplifier Speaker Level connections • The subwoofer’s speaker level inputs can accept speaker wires with banana, dual-banana, bare wire or spade terminals. If you have banana type connectors on your speaker wire, make sure that you tighten the binding posts before inserting. • Make sure that the negative speaker wires never touch the positive wires as this will short out and possibly damage your ampliÞer or receiver. AC outlets on the same circuit breaker Subwoofer 10 • This diagram shows all the low power components sharing a power strip which is connected to the same outlet used by the ampliÞer. • 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. • This arrangement will reduce the possibility of an audible hum in your system caused by a ground loop. The subwoofer’s two negative posts are joined internally (common-grounded). Your ampliÞer must also be internally commongrounded or you cannot use this connection. Contact the manufacturer of your ampliÞer to make sure its outputs are common grounded. User's Manual Location you might be able to place the subwoofer. Try crouching down, and try the corners. Find the place where the subwoofer's bass output sounds the loudest. Your subwoofer is designed to be placed in a corner and this will produce optimum performance. #1 is very good positioning. #2 is also excellent but may shake the back wall too much and cause things on or along the wall to rattle too much. If this occurs, use the #3 position: #3 Move the subwoofer approximately three feet away from the right wall and place it along the back wall as shown. This will substantially reduce the rattling of the back wall and will still pressurize the room with lots of bass. Experiment with at least two corners and decide which is the best, or you can try the following procedure: 1. 2. 3. Start by placing the subwoofer right on the seat of your favorite couch or easy chair. Take care to position it so it is not likely to fall off. (This method may seem a bit odd, but it is based on principles of acoustic physics.) If you are using the subwoofer as part of a Home Theater system, you can either run a calibration test (noise) signal through the subwoofer, or simply plug the analog outputs of a CD player directly into the subwoofer’s line level inputs. Turn down the subwoofer's volume level before turning on the CD, then play some of your favorite music samples with heavy bass. 4. Shut things down and install the subwoofer in this position. Make sure the control panel is not touching anything, and that it can receive good ventilation. Although low frequencies are non-directional, factors such as room reßections, standing waves, resonance and absorption will strongly affect your subwoofer’s performance. Moving the subwoofer from one location to another can have a major effect on the bass response. The Auto EQ mode will let you adjust for the room effects, but you should Þnd the best location Þrst. Remember to keep the subwoofer 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 Þelds 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/Mon input even though you are driving one subwoofer with a right channel drive and the other with a left channel drive. If your preampliÞer has a single sub/LFE output, use a Y cable to split it into two outputs. Walk around the room, listening, and stand in all the positions where User's Manual 11 Room Equalization Procedure Subwoofer performance is greatly affected by the room in which it is situated, and the positioning within the room. The room effects will boost and cut the output levels reaching your listening position. This gives a "Room EQ" effect which can often be far from wonderful. 4. Plug the microphone into the subwoofer's microphone jack. DIM - STANDBY BRIGHT - ON The SunÞre True Sub EQ can automati5. Set these controls: cally adjust for the effects of Room EQ. It • Volume to 0 dB. measures the actual frequency response • Crossover to "Bypass." using the supplied measurement micro• Phase to "Normal." phone. Then it automatically compen• Equalizer Authority to "Normal" sates for peaks or dips and smooths out the response. 6. Turn on the subwoofer AC power switch and press the Start button to go from The following procedure will help you standby to play mode. The yellow LEDs start the automatic equalization: should light up. Press Start again to start the calibration. Automatic EQ Mode 1. Install the True Sub EQ in the best location you can Þnd (see previous page). 2. The calibration must be done while the listening room is quiet. Please turn off any noisy machinery, including heating or cooling systems during this process. Have the kids play in the backyard and give the dog a treat to have him stop barking. A small amount of noise, such as quiet talking or whispering, is OK. 3. Place the microphone in the listening position (on the couch, for example), pointing in the direction you’ll normally be facing while listening to your system. Only use the microphone supplied by SunÞre. 7. The subwoofer will generate a test tone sweep, slowly increasing up the frequency scale; the microphone will take measurements of the sound arriving at your listening position. The LEDs will ßash randomly for a while, then the pairs will gradually glow constantly as each band is measured. This sequence will repeat twice until the measurements are complete. The LEDs will all blink once and stay on, and the test tones will stop. If you Þnd that the Þrst test tone plays louder and louder, and never leaves the Þrst band, then either the microphone is too far away from the subwoofer, or it is not plugged in correctly. 8. The procedure may take several minutes. Do not make any loud noise during this process, as it may affect the accuracy and/or make it take longer. DIM - STANDBY BRIGHT - ON 12 User's Manual 9. The sub automatically calculates the best equalization, based on the measured frequency response at your listening position. This will be saved, before returning to the normal listening mode. 10. In normal listening, you can adjust the overall effect of the saved EQ settings with the Equalizer Authority control. Normally you would turn it to 100% for full equalization. You can turn it to 0% to judge the effect of no equalization, or vary it to suit your taste. 11. Repeat the Auto EQ procedure if you change the location of the subwoofer, or if you rearrange your furniture. Manual EQ Mode This mode allows you to manually adjust the room equalization to suit your taste. Some rooms may sound ßat or lifeless without a touch of color to the sound. adjust for the room effects. Then follow this manual procedure if you think the equalization might still need a tweak: 1. Set these controls: • Volume to 0 dB. • Crossover to "Bypass." • Phase to "Normal." • Equalizer Authority to "50%" 2. Turn on the subwoofer AC power switch. 3. Press and hold down the Start button for several seconds, until the Þrst pair of yellow LEDs light up. 4. A low frequency test tone will sound to help you adjust the lowest band. 5. Adjust the volume by turning the Equalizer Authority control (or press Start to skip and move on to the next band). You will have to sit back in your listening position each time to listen for the effect, or seek the help of a loved one or kind friend to turn the control while you listen. 6. Press the Start button to move on to the next band, and then adjust the Equalizer Authority control as needed. When you reach the last band, the next press will bring up the Þrst band again. The subwoofer has four EQ bands, each represented by two yellow LEDs. Each band is Þxed in frequency and bandwidth, but each can be adjusted in volume level using the Equalizer Authority control during the Manual equalization mode. 7. When all bands have been equalized to your satisfaction, press and hold down the Start button for several seconds until all the yellow LEDS come on, and the test tone turns off. The Equalizer Authority settings will be saved for each band. and the subwoofer will return to its normal listening mode. This is similar to 8. Use the Equalizer Authority to adjust the having sliders on effects level of your equalization. a 4-band graphic equalizer. except the Resetting the EQ settings for each band • Turn off the subwoofer using the AC are stored digitally. power switch. The subwoofer saves the setting of the • Hold down the Start button and turn on Equalizer Authority control for each band, the AC power switch. so adjusting it for one band does not alter • Keep the Start button held down for 10 the adjustment for the other bands. seconds while the yellow LEDs ßash. First, you should follow the Automatic • When the LEDS go out, the EQ is reset EQ procedure, so the subwoofer will to the ßat factory setting. User's Manual 13 System ConÞgurations The following pages show some typical connections that you might make in your installation. They show how the inputs and outputs of the SunÞre Subwoofer are connected to your preampliÞer or receiver. Connections to a preampliÞer’s subwoofer output If your preampliÞer has a subwoofer output (often labeled LFE for Low Frequency Effects), it can be connected to the subwoofer’s Left (Mono) input as shown. This is the simplest and recommended connection. A receiver with a sub/LFE output can be connected in the same way. DIM - STANDBY BRIGHT - ON The subwoofer will play the low frequency range and the other speakers will play the frequency range delivered to them by your ampliÞer. If you have a Home Theater preampliÞer, it may have an independent subwoofer volume control. Make sure this is correctly adjusted, and that the SunÞre Subwoofer’s crossover frequency is set to 100 Hz. This is by no means an iron-clad rule, rather it is a good starting point. (See the crossover frequency control details on page 6 and adjustments on page 18). PREAMPLIF IER AMPLIFIE R You can set the subwoofer’s Volume control to 0 dB, and then use the preampliÞer’s subwoofer level control for normal and routine adjustments. 14 L R MAIN OUTPUTS SUB/LFE OU T L R INPUTS TO User's Manual Connections to a preampliÞer using Y cables If your preampliÞer does not have a sub/LFE output, you can use “Y” cables to send its main outputs to both the subwoofer and your ampliÞer. The subwoofer will play the low frequency range and your front speakers will play the full range. Although bass is commonly distributed evenly between left and right channels (L+R bass), movie soundtracks often contain differential (L-R) bass. The opening scene in “Top Gun”, for example, has loads of L-R bass information. If this is not preserved, the bass PREAMPLIF IER in these scenes L sounds anemic. The SUB/LFE OU T SunÞre Subwoofer utilizes differential gain on the left and right inputs to retain both the L+R and L-R information. Therefore, systems L R which do not have a INPUTS AMPLIFIE R dedicated sub/LFE output should use both the left and the right inputs as shown, for the greatest bass impact. DIM - STANDBY BRIGHT - ON R MAIN OUTPUTS An alternative connection method without using Y cables is shown on the next page. If your preamp/receiver has a dedicated sub/LFE output, then only the Left (Mono) input is used, as shown on the previous page. User's Manual 15 Using the line level high-pass outputs If you are using a preampliÞer 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 ampliÞer. DIM - STANDBY BRIGHT - ON The subwoofer will play the low frequencies and your ampliÞer and front speakers will play the frequency range above the subwoofer’s Þxed high-pass crossover point. The signals coming out of the subwoofer’s high-pass outputs are not affected by any of the controls. They are just a copy of the signals going in except that the low bass is Þltered out. This uses the subwoofer’s passive crossover network, rather than the active network and controls. PREAMPLIF IER L R MAIN OUTPUTS L R INPUTS AMPLIFIE R This is an excellent method if your speakers are small satellites or minimonitors, and/or your power ampliÞer is of limited power, such as a tube amp. TO FRONT 16 SPEAKERS User's Manual 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 speakerlevel inputs. The front speakers can still be connected to your receiver. DIM - STANDBY BRIGHT - ON The subwoofer’s internal ampliÞer supplies the power to reproduce the low frequency range. It receives a sample of the signal going to your front speakers. (An insigniÞcant fraction of your receiver’s power is transferred to the subwoofer). There is no need to use the RECEIVER speaker level MAIN inputs if you are OUTPUTS using a separate ampliÞer and preampliÞer. Such systems are best connected using the line level inputs as shown in the previous diagrams. If 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. TO FRONT L R SPEAKERS Your receiver MUST have common grounded outputs, or it will be damaged if connected to the subwoofer’s speaker level inputs. User's Manual 17 Adjusting the controls There are two main methods for adjusting the level, crossover frequency and phase of the SunÞre Subwoofer to match a system: • Bob Carver’s preferred method: By listening and making the adjustments to suit your taste. • Laboratory method: By measuring the output and adjusting for a ßat frequency response. Excellent results can be obtained if you make the adjustments based on simply listening. This is SunÞre’s preferred method as it allows the system to be voiced based on what sounds the best, whereas laboratory-ßat frequency response can often be clinical and less than exciting. 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 level control! It was set correctly in step 2. Step 5. Listen to the subwoofer. Resist all temptations to turn up the level control. Play something with really deep bass to conÞrm that your subwoofer is working.” Control settings Use this drawing to record some of your favorite settings. The following procedure is for those who prefer a more methodical and scientiÞc approach. This excerpt is from “The Audio Critic,” issue 24, page 31, written by contributing editor David Rich, and is reprinted here with their kind permission. You will need a test CD with low-frequency warble tones, and a sound pressure-level meter. The Radio Shack® SPL meter will do Þne, as will the Stereophile® test CD. “Step 1. Disconnect the subwoofer and run the main speaker with a tone in its passband (80-100Hz). Measure the level. Step 2. Disconnect the main speaker and reconnect the subwoofer. Set the subwoofer to its highest crossover frequency. Set the level control of the subwoofer to give the same sound pressure 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. 18 User's Manual SpeciÞcations (Signature Edition) AmpliÞer Output 2,700 watts rms (3.3 Ω impedance) High Cut Filter 0.75 Vrms from right input with volume control at 0 dB, 200 mVrms volume control fully clockwise * Input Impedance: 30 Hz - 100 Hz adjustable, with a "Bypass" position. Frequency Response 16 Hz - 100 Hz Power Line Voltage US model 120 VAC 50/60 Hz International model 230 VAC 50/60 Hz Dimensions 30 kΩ for Line-Level inputs 56 kΩ for Hi-Level inputs 40 kΩ for XLR input, each leg balanced to ground XLR Input Pin 1 Pin 2 Pin 3 Ground Positive Negative Driver: 12 inch Extra large magnet and long throw mechanical design yield very high back-emf. The result is extraordinarily high operating efÞciency – that is, more acoustic output for each watt of input. 13" x 13" x 13" Weight 53 lbs Internal System Gain: Finish High gloss, dark rosewood Þnish. Line Power Consumption: 800 watts average, at maximum continuous output. 8 watts at idle. 2,700 watts peak, time limited basis Output Levels: Greater than 116 dB peak SPL (includes room gain) from 16 Hz to 100 Hz. Measurement is one meter, anechoic. A typical SunÞre subwoofer can be expected to ‘best’ its speciÞed minimum peak SPL by several decibels. Total Harmonic Distortion Typically less than 1/10 of the fundamental between 18 to 80 Hz. 50 dB from left input jack to speaker with volume control at 0 dB, 62 dB with control fully clockwise 40 dB from right input jack to speaker with volume control at 0 dB, 52 dB with control fully clockwise * * SunÞre True Subwoofer utilizes * The differential gain on the left and right inputs to retain both L+R and L-R information. 12 VDC Trigger Input Input voltage range: 5 -18 VDC Impedance: approx 600 Ω (20 mA @ 12 V) Removable terminal block, and one 1/8” Mono minijack, tip positive. Input Sensitivity for full output: 250 mVrms from left input with volume control at 0 dB, 60 mVrms volume control fully clockwise * User's Manual 19 SpeciÞcations (Standard Edition) AmpliÞer Output 2,700 watts rms (3.3Ω impedance) High Cut Filter 0.75 Vrms from right input with volume control at 0 dB, 200 mVrms volume control fully clockwise * Input Impedance: 35 Hz - 100 Hz adjustable, with a "Bypass" position. Frequency Response 18 Hz - 100 Hz Power Line Voltage US model 120 VAC 50/60 Hz International model 230 VAC 50/60 Hz Dimensions 30 kΩ for Line-Level inputs 56 kΩ for Hi-Level inputs 40 kΩ for XLR input, each leg balanced to ground XLR Input Pin 1 Pin 2 Pin 3 Ground Positive Negative Driver: 10 inch Extra large magnet and long throw mechanical design yield very high back-emf. The result is extraordinarily high operating efÞciency – that is, more acoustic output for each watt of input. 11" x 11" x 11" Weight 48 lbs Internal System Gain: Finish High gloss, dark rosewood Þnish. Line Power Consumption: 600 watts average, at maximum continuous output. 8 watts at idle. 2,700 watts peak, time limited basis Output Levels: Greater than 110 dB peak SPL (includes room gain) from 18 Hz to 80 Hz. Measurement is one meter, anechoic. A typical SunÞre subwoofer can be expected to ‘best’ its speciÞed minimum peak SPL by several decibels. Total Harmonic Distortion Typically less than 1/10 of the fundamental between 18 to 80 Hz. Input Sensitivity (full output): 250 mVrms from left input with volume control at 0 dB, 60 mVrms volume control fully clockwise * 50 dB from left input jack to speaker with volume control at 0 dB, 62 dB with control fully clockwise 40 dB from right input jack to speaker with volume control at 0 dB, 52 dB with control fully clockwise * * SunÞre True Subwoofer utilizes * The differential gain on the left and right inputs to retain both L+R and L-R information. 12 VDC Trigger Input Input voltage range: 5 -18 VDC Impedance: approx 600 Ω (20 mA @ 12 V) Removable terminal block, and one 1/8” Mono minijack, tip positive. © 2004 SunÞre Corporation. All rights reserved. SunÞre Corporation reserves the right to improve its products at any time. Therefore, speciÞcations are subject to change without notice. Manual 913-103-00 Rev B 20 User's Manual Troubleshooting The SunÞre Subwoofer is expertly designed and built to provide years of trouble-free performance. Most problems that occur can usually be solved by checking your setup or making sure that the components connected to the ampliÞer are on and fully operational. The following information will help you deal with common problems you may experience during normal use. If a problem still persists, please contact your SunÞre Dealer for assistance. Not enough bass • Check that your preampliÞer’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 function. • If your preampliÞer has a single subwoofer/LFE output jack, make sure it connects to the subwoofer’s Left (Mono) input. If the bass is still not enough after checking all the remaining points, use a Y cable to connect the preampliÞer’s single subwoofer/LFE output to the subwoofer’s right and left inputs. • • Make certain the subwoofer is in a corner location, Þring at 45 degrees into the walls formed by the corner. This is not absolutely essential, but will maximize the bass output and give the smoothest possible response. If you place the unit so one of the drivers is Þring into one of the walls, leave three inches of clearance between the driver and the wall. Home Theater preampliÞers 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. User's Manual • Check that your preampliÞer 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 preampliÞer’s subwoofer/LFE output has an adjustable crossover frequency, make sure that the SunÞre subwoofer’s own crossover point is set higher or part of the bass range will be missing. Not enough bass in a 5.1 system • 5.1 Home Theater preampliÞers 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 speakers can be redirected to play in the subwoofer, or the subwoofer can play the bass from all the speakers, in addition to its dedicated LFE (low frequency effects) channel. Make sure that all of the bass management options are correctly set. The preampliÞer may have a way of turning the subwoofer output off entirely, so check that it is always on. • Check that the preampliÞer calibration procedure is correctly adjusted. Usually, the preamp 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 preampliÞer is correctly set to decode the 5.1 surround modes, such as Dolby Digital or DTS. • 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. 21 Hum Adding any component such as a subwoofer to an existing system will often give rise to a hum which wasn’t there before. Your Þrst thought may be that the subwoofer has a problem, but this is more than likely caused by a “groundloop” in your system. Follow these steps to isolate the main cause of the ground-loop hum (there may even be more than one cause). • • Try to have all of your equipment on the same electrical outlet or circuit, see page 10 for more details. • Turn off all components in your system, including the subwoofer, ampliÞers and the preampliÞer, before disconnecting or connecting cables. • 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. • 22 • If the hum persists, disconnect all the source components one at a time from the back of the preampliÞer until you identify the problem. • If you are using the subwoofer’s 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. • Ground-loop isolators are available for audio lines and video. Once you have identiÞed which components are causing a problem, you can Þt the isolators between the component and the preampliÞer. 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. NOTE: Never remove the ground pin from any power cords. This is very dangerous. • hum is caused by the cable TV line, then you will need a “ground-loop isolator.” This is an inexpensive device Þtted in line with the coaxial cable feed. If you have followed the above guidelines 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: 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 Þrst enter the room, so they are making no connection to your preampliÞer, TV, or any other component. If the The subwoofer won’t turn off • The subwoofer should turn itself off after approximately Þfteen 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. The subwoofer won’t turn on automatically The subwoofer should turn on when an audio signal is applied, or 12 VDC is applied to the Trigger inputs, or if the Start button is pressed. If it does not turn on, check the following: • The subwoofer’s volume control may be turned down, or no signal is received from your preampliÞer. • Check the input connections. • Check the Mode switch or menu on surround systems to be certain that a bass signal is being sent to the subwoofer. • Use the 12V Trigger for the most reliable on/off operation. User's Manual Limited Warranty SunÞre 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. SunÞre Corporation offers the following Warranty to you, the owner of a new SunÞre product: The SunÞre Corporation Warranty for the True Subwoofer EQ is in effect for TWO years from the date of original retail purchase. The SunÞre Corporation Warranty covers defects in materials and workmanship. The following, however, are excluded: a) Damage caused during shipment. b) Damage caused by accident, misuse, abuse of operation contrary to the instructions speciÞed in the SunÞre Corporation user’s manual c) Units where the serial number has been defaced, modiÞed or removed, d) Damage resulting from modiÞcation or attempted repair by any person not authorized in writing by SunÞre Corporation. e) Units purchased from unauthorized dealers. The SunÞre Corporation Warranty extends to the original owner or subsequent owner(s) during the two 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 Þtness for particular purposes, are limited in duration to the two year length of this Warranty, unless otherwise provided by state law. SunÞre Corporation’s liability is limited to the repair or replacement, at our option, of any defective product and shall not in any event include property or any other incidental or consequential damages which may result from the failure of this product. User's Manual 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 speciÞc 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 SunÞre Corporation product. Service Assistance We suggest that you read the Limited Warranty completely to fully understand your Warranty/Service coverage. If your SunÞre Corporation product ever requires service, write to us, or call: SunÞre 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 SunÞre 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. Always use the original cloth bag and packaging materials and method, or the Þnish may be damaged. Please do not ship Parcel Post. NOTE: Before sending in your unit for repair, you must call SunÞre for return authorization. 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 SunÞre Corporation; return ground shipping costs will be prepaid if repairs were covered by the scope of this Warranty. 23 Manual part number 913-103-00 Rev B
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Key Features
- 2,700 watt, high efficiency amplifier
- High gloss, dark rosewood finish
- Automatic Room Equalization mode
- Measurement Microphone included
- Very low distortion
Frequently Answers and Questions
How do I connect the True Subwoofer EQ to my system?
The True Subwoofer EQ has both high-level and low-level inputs, so you can connect it to any type of audio system.
How do I use the Automatic Room Equalization mode?
Simply connect the measurement microphone to the True Subwoofer EQ and follow the instructions on the display. The subwoofer will automatically adjust its settings for optimal performance in your room.
What is the difference between the Signature Edition and the Standard Edition?
The Signature Edition has a higher power amplifier (2,700 watts vs. 1,600 watts) and a higher gloss finish.