Hum, Subwoofer won’t turn off | Sunfire SRS-210R specification

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 10 for more details.

•If your sub amp 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 amplifier, amplifiers and the preamplifier, before disconnecting or connecting cables.

•First remove every connection from the sub amplifier to the rest of your system. Plug the subwoofer amplifier's 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.

•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 amplifier should turn itself off after approximately fifteen min- utes 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 amplifier 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 amplifier’s volume con- trol 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.

•Use the 12V Trigger for the most reliable on/off operation.

22 User's Manual

SRS-210R specifications

The Sunfire SRS-210R is a compact, high-performance subwoofer designed to deliver an exceptional audio experience in both home theater and music applications. Renowned for its innovative technology and impressive sound quality, the SRS-210R is a great choice for audiophiles and casual listeners alike.

One of the standout features of the SRS-210R is its unique design. The subwoofer utilizes a patented "Rift" technology, which allows for a smaller footprint without sacrificing sound quality. This makes it ideal for those who have limited space but still want powerful bass performance. Its sleek and modern aesthetic also means it can fit seamlessly into any décor.

At the heart of the SRS-210R is a 10-inch high-excursion driver that is paired with a powerful amplifier capable of delivering up to 300 watts of peak power. This combination ensures that the subwoofer can produce deep, impactful bass that can fill a room without distortion, even at high volume levels. The bass response is further enhanced by the use of a vented enclosure, which allows for better airflow and improved efficiency.

In terms of connectivity, the Sunfire SRS-210R offers a variety of options to accommodate different setups. It includes both line-level RCA inputs and speaker-level inputs, making it versatile for connecting to different audio sources. Additionally, the subwoofer features variable phase control and a low-pass filter, enabling users to fine-tune the integration with their main speakers for a more cohesive sound stage.

Another notable characteristic of the SRS-210R is its high-quality construction. Sunfire has designed this subwoofer with durability in mind, ensuring that it can withstand the rigors of everyday use while still providing consistent performance. The cabinet is made from premium materials that reduce resonance, allowing for clearer sound reproduction.

Overall, the Sunfire SRS-210R is a remarkable subwoofer that balances compact size with potent audio capabilities. Its innovative technologies and features, combined with its stylish design, make it an excellent addition to any home audio system. Whether for movies, music, or gaming, the SRS-210R promises to elevate your listening experience to new heights with deep, thunderous bass.