Sunfire Home Theater System manual Hum, Subwoofer won’t turn off, Subwoofer won’t turn on

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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).

•Try to have all of your equipment on the same electrical outlet or circuit, see page 9 for more details.

•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.

•Turn off all components in your system, including the subwoofer, amplifiers and the preamplifier, 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.

•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:

•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 preampli- fier, TV, or any other component. If the

hum is caused by the cable TV line, then you will need a “ground-loop isolator.” This is an 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 preamplifier 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 identified which components are causing a problem, you can fit the isolators be- tween the component and the preampli- fier.

The subwoofer won’t 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.

The subwoofer won’t turn on

•The subwoofer’s volume control may be turned down or no signal is received from your preamplifier.

•Check the input connections.

•Check the mode switch or menu on sur- round systems to be certain that a bass signal is being sent to the subwoofer.

Audible snap from outlet

•When the subwoofer is initially plugged into the wall, there is an in-rush current surge as the power supply capacitors charge up. This may give rise to an audible snap from the outlet as the plug is inserted. This can be avoided by plugging the subwoofer into a switched outlet or switched power strip (rated at 15 Amps or more).

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Contents Page Safety Instructions Ventilation The Component shouldContents Unpacking FeaturesIntroduction CareOverview DriversAmplifier Crossover Frequency Control Panel FeaturesBass Level Phase Control OutputsSpeaker-Level Inputs Power/Auto on IndicatorLine-Level Inputs Line FuseHeat rise InstallationAC Power Considerations Magnetic FieldsConnections Speaker-Level connectionsUsing Two Subwoofers LocationSystem Configurations Connections to a preamplifier’s subwoofer outputConnections to a preamplifier using Y cables Using the line-level high-pass outputs Using the speaker-level inputs If you are usingAdjusting the controls Control settingsSpecifications Troubleshooting Not enough bassNot enough bass in a 5.1 system Subwoofer won’t turn on HumSubwoofer won’t turn off Audible snap from outletLimited Warranty Service AssistanceManual part number 913-124-00 Rev D

Home Theater System specifications

The Sunfire Home Theater System is designed for audiophiles and movie enthusiasts seeking an immersive audio experience in the comfort of their own homes. Known for its engineering excellence, Sunfire products deliver powerful sound while maintaining compact designs, making them suitable for various living spaces.

One of the standout features of the Sunfire Home Theater System is its proprietary subwoofer technology. Sunfire’s subwoofers utilize a unique design that combines high output with a small footprint. The result is deep, rumbling bass that fills the room without overwhelming the space. The patented High Fidelity Bass (HFB) technology ensures that even the lowest frequencies are reproduced with precision, making action movies more thrilling and music more enjoyable.

In addition to powerful subwoofers, the system includes high-performance satellite speakers that provide crisp and clear mid and high frequencies. These speakers often employ advanced materials and construction techniques, enhancing their durability while delivering an unparalleled auditory experience. With a focus on delivering a balanced soundstage, Sunfire speakers ensure that every sound is faithfully reproduced, whether it’s the subtle rustle of leaves or the booming explosions of blockbuster films.

The Sunfire Home Theater System embraces cutting-edge technologies such as Dolby Atmos and DTS:X, enabling a surround sound experience that places you at the center of the action. With support for immersive audio formats, the system creates a three-dimensional sound environment, allowing sounds to move around you in a lifelike manner. This enhances the realism of films and fully immerses you in the audio landscapes of your favorite shows.

Setup and customization are also user-friendly features of the Sunfire Home Theater System. Many models come equipped with advanced calibration technologies that analyze the acoustics of your room and automatically adjust settings for optimal performance. This ensures that every listener enjoys the best possible sound quality, regardless of their seating position.

Additionally, the system's sleek, modern design makes it an attractive addition to any home décor. Available in multiple finishes and styles, Sunfire products blend seamlessly into a living room or dedicated home theater space without compromising on aesthetics.

In conclusion, the Sunfire Home Theater System combines innovative technologies, powerful performance, and elegant design to deliver an exceptional home audio experience. Whether you're watching movies or listening to music, the Sunfire system ensures that you experience every moment in rich, immersive sound.
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