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True Subwoofer
Signature and
Standard Edition
User's Manual
Safety Instructions
1.Read Instructions -– All the safety and operation instructions should be read before the SunÞre Component is operated.
2.Retain Instructions — The safety and operating instructions should be kept for future reference.
3.Heed Warnings — All warnings on the Component and in these operating instructions should be followed.
4.Follow Instructions — All operating and other instructions should be followed.
5.Water and Moisture — The Compo-
nent should not be used near water - for example, near a bathtub, washbowl, kitchen sink, laundry tub, in a wet basement, or near a swimming pool, etc. This Component is intended for use in Moderate climates. Do not use in Tropical climates.
6.Ventilation — The Component should be situated so that its location or position
does not interfere with its proper ventilation. Ensure a minimum distance of 2 inches
(5 cm) around the Component for sufÞcient ventilation. For example, the Component should not be situated on a bed, sofa, rug, or similar surface that may block any ventilation; or placed in a built-in installation such as a bookcase or cabinet that may impede the ßow of air. Ensure that the ventilation is not impeded by covering the control panel with items such as newspapers, table-cloths, curtains, shaggy dogs, sleeping cats etc.
7.Heat and Flames — The Component should be situated away from heat sources such as radiators, or other devices which produce heat. Do not place naked ßame sources, such as lighted candles on top of, or near the Component.
8.Power Sources — The Component should be connected to a power supply only of the type described in these operation instructions or as marked on the Component.
9.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 particular attention to cords at plugs, convenience receptacles, and the point where they exit the Component.
10.Cleaning — The Component should
be cleaned only as recommended in this manual.
11.Non-use Periods—The power cord of the Component should be unplugged from the outlet when unused for a long period of time.
12.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 Component. Do not expose the
Component to dripping or splashing from liquids. Do not place objects Þlled with liquids on top of, or near the Component. For example, no vases, glasses of wine, or cans of pop.
13.Damage Requiring Service — The Component should be serviced only by qualiÞed service personnel when:
A.The power-supply cord or the plug has been damaged; or
B.Objects have fallen, or liquid has spilled into the Component; or
C.The Component has been exposed to rain; or
D.The Component does not appear to operate normally or exhibits a marked change in performance; or
E.The Component has been dropped, or its cabinet damaged.
14. Servicing — The user should not attempt to service the Component beyond those means described in this operating manual. All other servicing should be referred to qualiÞed service personnel.
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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......................................... |
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Introduction ................................................... |
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Features ........................................................ |
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Unpacking and Care ..................................... |
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Overview ....................................................... |
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Control Panel Features ................................. |
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Installation ..................................................... |
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Connections ................................................ |
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Location ...................................................... |
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Room Equalization Procedure .................... |
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System ConÞgurations ................................ |
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Adjusting the Controls ................................. |
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SpeciÞcations (Signature Edition) ............... |
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SpeciÞcations (Standard Edition)................ |
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Troubleshooting Guide................................ |
21 |
Limited Warranty ......................................... |
23 |
Service Assistance ...................................... |
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To Þnd out more about this and other SunÞre products, please visit our website: www.sunÞre.com
User's Manual |
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Introduction Features
Dear Friend:
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.
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.
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:
•2,700 watt, high efÞciency ampliÞer
•High gloss, dark rosewood Þnish
•Automatic Room Equalization mode
•Measurement Microphone included
•Very low distortion
•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.
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.
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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-electro- motive 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.
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Control Panel Features
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Phase Control |
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
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.
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.
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.
4. Trigger Inputs
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.
5. Outputs
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
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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.
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Control Panel Features continued
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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 120-
130 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
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.
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User's Manual
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