Positioning the subwoofer, Impact of room-modes

Operation

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LISTENING ROOM

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Positioning the subwoofer

Although it is often said that the location of a subwoofer in a listening room is not critical (as the human ear can not locate direction at very low frequencies), we recommend that you choose its position carefully. Thus the subwoofer can integrate seamlessly with the other speakers in the system and interact correctly with the room acoustics.

All of the following should be taken as rough guidelines; bass response in general is very dependent on the acoustics of the listening environment. Finding the best position often involves a lot of trial-and-error experimentation. Always trust your ears, even if the position of the subwoofer seemingly goes against the guidelines. Contradictory as it may seem, good integration of subwoofers has been achieved when one isn’t aware that a subwoofer is present at all in the system, yet performance involves fast, deep and solid bass without sounding stressed, even at loud levels.

Choose adequate music material

When experimenting to find the optimal location, use a couple of music tracks with repetitive bass across a large spectrum. The tracks should be sufficiently different from each other and each should cover a wide bass-range. Musical instruments, such as a double-bass, bass guitar, church organ, etc. cover a wide spectrum in the bass region and are therefore very suitable. Using non-music (such as action movies) material to position and adjust the subwoofer with, may lead to spectacular results with such material but almost always it will result in overblown and excessive bass when playing music with the same setting.

Impact of room-modes

Every listening environment will have specific “room-modes”, whereby in some specific locations in the room and at particular frequencies, the bass may be too much or too lean. This effect will be stronger in square and “shoe-box” shaped rooms. With a single subwoofer, the better position for the subwoofer relative to the listening position will be the one where bass is perceived to be neither too much nor too lean at any given frequency.

XAvoid placing the subwoofer at 1/4, 1/2 or 3/4 of either the length or width of the room as at these locations the room-modes are likely to be strongest (the dashed lines in the figure)

Note:

•Always position subwoofers at least 1 mtr/3 ft away from a CRT television as the magnetic field emanating from the subwoofer may otherwise distort the picture. If you see discoloration on the television screen, try moving the subwoofer and other speakers close by away from the television.

12	Dynaudio SUB 250

SUB 250 specifications

The Dynaudio SUB 250 is a powerful and sophisticated subwoofer designed to deliver deep, accurate bass performance for music enthusiasts and home theater aficionados alike. This subwoofer boasts a modern design that seamlessly integrates into any environment while providing high-quality audio reproduction.

At the heart of the SUB 250 is a robust 10-inch bass driver, engineered to deliver a precise and dynamic sound across a wide frequency range. The driver utilizes Dynaudio's proprietary technology to ensure low distortion, resulting in a clean and powerful bass response. This translates into an immersive listening experience, where every note and beat is felt as much as it is heard.

One of the key features of the SUB 250 is its advanced amplifier, capable of delivering up to 250 watts of peak power. This powerful amplification allows the subwoofer to handle demanding audio tracks without compromising performance. The class D amplifier ensures high efficiency and less power consumption, making the SUB 250 not only powerful but also energy-efficient.

The SUB 250 incorporates several intelligent technologies to enhance performance and usability. One such feature is the adjustable crossover frequency, which allows users to seamlessly integrate the subwoofer with their existing speaker systems. This flexibility is crucial for achieving the perfect balance between the subwoofer and the main speakers, ensuring optimal sound reproduction across the entire audio spectrum.

Additionally, the SUB 250 is equipped with multiple connection options, including RCA and speaker-level inputs, making it compatible with various audio systems. This versatility ensures that users can easily incorporate the subwoofer into their home entertainment setups, whether they are utilizing a stereo system or a full surround sound configuration.

The design of the SUB 250 is another highlight, featuring a sleek cabinet that minimizes resonance and vibration. The enclosure is constructed to support the driver effectively, allowing for extended low-frequency output without compromising sound quality. The subwoofer is available in a variety of finishes, allowing it to blend seamlessly with any décor.

In summary, the Dynaudio SUB 250 is an elite subwoofer that excels in delivering deep, accurate bass while offering advanced features and technologies for flexibility and ease of use. Its combination of powerful performance, intelligent design, and versatility makes it an excellent choice for anyone looking to enhance their audio experience.