However, as you move the speaker far- ther away from the listener, both the reflected and the direct sound will dissi- pate, requiring more power from your surround sound amplifier channels. If the surround sound system you are using has a small five or ten watt amplifier for the rear speakers, stay within five to eight feet of the listening location. If you are using a 25 to 50 watt amplifier you can mount the speakers 10 to 15 feet away from the listening location and still achieve reason- ably high volume levels.

In large or unusually shaped rooms, using multiple speakers might be the only way to achieve a good effect. In large or unusual- ly shaped rooms this might be the only way to achieve a good effect. If you like to listen to music surround modes which emulate concert hall acoustics, more than two surround speakers will prove extraor- dinarily effective (See Figure 6). With Niles CM5HD, CM6HD and CM8HD loudspeakers it is easy to add another pair without affecting the decor of the room. However, you will need to use a much more powerful amplifier than that which

is built into a typical surround sound receiver or amplifier. Niles makes a num- ber of Systems Integration Amplifiers with proprietary features that make them uniquely suited to enhance a good sur- round sound system. Consult your local Niles dealer for more information.

The Boundary Effect

Corners can affect the bass response of the speaker powerfully! This is called the boundary effect. You will emphasize par- ticular bass frequencies and cancel out other bass frequencies when you place speakers close to the wall/ceiling bound- ary or a corner wall boundary. This can make the speaker sound excessively boomy and inaccurate to some listeners, while to others it just seems like more bass sound. A good rule of thumb is if you always listen to your current pair of speak- ers with the bass turned up, you’ll enjoy corner placement. If you keep your tone controls at neutral, try to keep the speak- ers at least two or three feet from the boundaries of the room.

Speaker Placement

Figure 5

Figure 6

Varying Listening Position

Surround Sound

8

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Niles Audio CM8HD, CM6HD, CM5HD manual Boundary Effect
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CM6HD, CM8HD, CM5HD specifications

Niles Audio has long been synonymous with high-quality sound solutions, and their line of in-ceiling speakers, the CM5HD, CM8HD, and CM6HD, showcases this commitment to excellence. Designed for residential and commercial applications, these speakers combine aesthetics with performance, making them ideal for any setting.

The CM5HD is the entry-level model, yet it doesn't compromise on sound quality. With its 5.25-inch polypropylene woofer and 1-inch silk dome tweeter, it delivers clear, balanced audio across various frequency ranges. The CM5HD is equipped with a patented Tri-Logic™ technology, allowing for seamless integration into a home’s audio system. This technology helps in achieving a wider soundstage and better imaging, making it perfect for both music and movie experiences.

Moving up to the CM6HD, the larger 6.5-inch woofer enhances bass response, providing a richer audio experience. Its 1-inch pivoting soft dome tweeter allows for customizable sound direction, ensuring that listeners get the most immersive audio experience possible. The CM6HD also features a unique magnetic grille that allows for easy installation and discreet appearance, ensuring that the aesthetic of any room remains intact while still enjoying exceptional sound quality.

The CM8HD is the flagship model of the series, designed for audiophiles seeking the ultimate performance. With an 8-inch woofer and dual 1-inch tweeters, this speaker is built to fill larger spaces with powerful, full-bodied sound. The CM8HD includes Niles Audio’s advanced dual voice coil technology, offering flexibility in audio performance. Its optimized tweeter placement means that users can enjoy sound that is evenly distributed throughout the room, making it perfect for larger home theaters or entertainment spaces.

All models in the CM series feature a weather-resistant design, making them suitable for indoor and outdoor installations. Niles also offers customizable paintable grilles that allow these speakers to blend seamlessly into any décor. Additionally, each model incorporates advanced high-definition sound reproduction capabilities, ensuring that high-resolution audio files are played back as intended.

In conclusion, the Niles Audio CM5HD, CM6HD, and CM8HD in-ceiling speakers combine cutting-edge technology with elegant designs. With features that enhance sound quality, user flexibility, and aesthetic appeal, these speakers are perfect for anyone looking to elevate their audio experience in any environment, proving that great sound can be enjoyed without sacrificing style.
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