How Many Subwoofers?

For most applications a single PSW800’s is appropriate. However, in large rooms, high performance listening rooms or in home theaters, an array of two or more PSW800 will deliver astounding results. Unlike other subwoofer systems, a Niles Subwoofer Array is concealed. Consider the distance between the subwoofer(s) and the listener, the size of the amplifier, and the desired quality and volume of sound when deciding how many PSW800s to install in your home.

 

Decibels and Power

65dB

Conversation at three feet.

75dB

Sewing Machine at three feet.

85dB

Vacuum Cleaner at 10 feet.

95dB

Subway Train entering a station

 

at 20 feet.

3dB

The smallest difference in volume

 

the human ear can easily detect.

10dB

Perceived as twice as much loud-

 

ness if it is an increase (half as

 

much if it is a decrease).

Any speaker requires twice as much amplifier power to increase 3dB and ten times as much power to increase 10dB.

Comparison of 1, 2 or 4 Subwoofers

16’ x 18’ x 8’ Room @ 12’

 

25 Watts

100 Watts

1 Sub

95dB

101dB

2 Subs

100dB

106dB

VLSA of 4 Subs

103dB

109dB

2 x Watts = 3dB Increase in Volume.

2 x Subs = 3dB Increase in Volume.

2 x Subs = 1/2 the subwoofer excursion for the same volume.

If you double the distance from the sub- woofer to the primary listening position you decrease the volume by 4 to 6dB.

Single Stereo Subwoofer

One PSW800 can produce the bass sound from both the left and the right channels because of its unique dual voice coil design. One voice coil powers the left chan- nel and the other powers the right channel. A stereo crossover divides the signal and fil- ters it according to the settings of the switch- es on the front panel. A single stereo sub- woofer is compatible with any 4 ohm stable amplifier. Eight ohm stable amplifiers may be used with a Niles IM volume control (see Impedance section on Page 7)

Dual Subwoofer Systems

Using two PSW800 subwoofers in a sys- tem raises the maximum attainable volume of the system by 3dB. Additionally, at lower volumes, excursion — and therefore distortion levels — are reduced. In a large room, or a home theater system, the effect on bass quality is extremely desirable. Another 2dB increase is possible if the voice coils of each are PSW800 paralleled. This requires a multi-channel amplifier or an amplifier capable of driving the 2 to 2.6 ohm load of the overall system.

VLSA Installations

A Very Large Subwoofer Array (VLSA) installation lowers the amount of excur- sion required to achieve a high sound pressure level. Lowering excursion dra- matically improves the quality of the sound. VLSA installations are most appro- priate when the listener appreciates detail and bass extension, but must have a con- cealed installation. A VLSA of four sub- woofers must have a multi-channel ampli- fier with one channel assigned to each subwoofer. (See Figure 7).

How Many Subwoofers?

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Niles Audio PSW800 manual Single Stereo Subwoofer, Dual Subwoofer Systems, Vlsa Installations
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PSW800 specifications

The Niles Audio PSW800 is a powerful subwoofer designed for home audio systems, delivering exceptional performance with an innovative blend of technology and engineering. Known for its deep, rich bass and high-efficiency output, the PSW800 is an ideal choice for audiophiles and casual listeners alike.

At the heart of the PSW800 is a high-quality 8-inch woofer, which utilizes a polypropylene cone that provides durability and reduces distortion. This driver is coupled with a robust magnet structure that enhances its performance, ensuring that the subwoofer can reproduce low frequencies with clarity and impact. With a frequency response range that extends down to 30 Hz, the PSW800 can produce the low-end sounds crucial for a full audio experience, whether it’s the thunderous explosions in an action movie or the intricate bass lines in music tracks.

One standout feature of the PSW800 is its built-in high-current amplifier. This powerful amplifier can deliver up to 200 watts of peak power, providing the necessary force to drive the woofer effectively. The combination of a dedicated amplifier with the woofer allows for a more cohesive and dynamic sound output, making it a valuable addition to any surround sound system.

The Niles Audio PSW800 also incorporates advanced room optimization technology. This system allows the subwoofer to adapt to various room acoustics by optimizing its performance based on the environment. This is particularly beneficial for users who may not have a dedicated home theater space and need a flexible solution to achieve the best sound quality.

Convenience features such as adjustable crossover frequency and volume controls offer users the ability to tailor the subwoofer's output to their specific listening preferences and room characteristics. Additionally, the PSW800 includes both line-level and speaker-level inputs, ensuring compatibility with a wide range of audio equipment.

The sleek design of the Niles Audio PSW800 ensures that it can blend seamlessly into any home decor while providing a solid and reliable performance. Its compact form factor makes it suitable for various living spaces without compromising sound quality.

In summary, the Niles Audio PSW800 stands out in the crowded subwoofer market, providing a combination of powerful bass performance, adaptive technology, and user-friendly features. For anyone looking to enhance their home audio experience, this subwoofer delivers exceptional value and performance.
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