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THE SUBWOOFER - BACKGROUND INFO

The Subwoofer

A subwoofer is a monitor that reproduces low frequencies. The purpose is to take over from the main monitor(s) as frequencies approach the lower end of the frequency range. I.e. approximately below 120 Hz. When used in professional monitor systems it is commonly preferred to use subwoofers below approximately 80 Hz. But of course it depends on the performance of the main monitors.

The low frequency contents of just one or all the main channels can be directed to one subwoofer.

From the psycho-acoustics we know that there is no directional information in audio signals below approximately 120 Hz. Hence the advantage of placing the subwoofer in a position where the best distribution is achieved.

However it is very important that the distortion in the subwoofer is reduced to an absolute minimum because distortion results in the production of harmonics (2, 3, 4 etc. times the frequency reproduced). Especially the third harmonic may dominate. Reproducing a frequency of 100 Hz can result in the generating of an audible frequency component at 300 Hz, which presents directional information to the human hearing system.

Bass management

Bass management (sometimes called bass redirection) is a very important feature - and it is in general an absolute necessity if you want to make a 5-channel set-up in a small room! There are several reasons for this.

The bass management system is designed to subtract the bass contents of all main channels and reproduce this by the use of a sub woofer. The AIR-series provides a number of possible cross-over frequencies that can be determined by the user.

L

C

R

Ls

Rs

Σ Sub

Principal set-up for the bass management. It can be used with any number of main monitors up to five.

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Dynaudio pmn manual Subwoofer Background Info
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pmn specifications

Dynaudio, a company renowned for its high-fidelity audio products, has made significant strides in the field of professional monitoring through its PPM (Professional Precision Monitoring) series. Among the standout models in this series is the Dynaudio PMN (Professional Monitoring Nearfield), which has garnered attention for its outstanding sound quality, precise technical performance, and sophisticated design.

One of the key features of the Dynaudio PMN monitors is their advanced driver technology. Equipped with proprietary drivers, the PMN series employs custom-designed woofers and tweeters that deliver an incredibly accurate frequency response. The woofers utilize a lightweight diaphragm, ensuring that low frequencies are produced with power while maintaining clarity. The tweeters, known for their soft dome design, excel in reproducing high frequencies with exquisite detail and minimal distortion, making the listening experience both immersive and enjoyable.

In terms of design, the PMN monitors boast a sleek and modern aesthetic that fits seamlessly into any studio environment. The cabinet construction employs advanced materials and techniques that minimize resonance, thus reducing unwanted coloration in sound. The unique curved shape of the cabinets is not only visually appealing but also supports optimal acoustic performance by enhancing sound dispersion.

Another notable characteristic of the Dynaudio PMN is its versatility. The monitors are equipped with multiple inputs, allowing for seamless integration into various set-ups, whether in a professional studio or a home listening environment. This flexibility is further complemented by adjustable bass and treble controls, empowering users to tailor the sound profile to their specific requirements.

Dynaudio has also incorporated advanced technologies such as room correction in certain PMN models, which enables precise calibration according to the acoustics of the room. This feature ensures that audio professionals can rely on consistent and accurate sound reproduction regardless of their monitoring environment.

Overall, the Dynaudio PMN series represents a blend of pioneering audio technology, meticulous craftsmanship, and user-focused design. For professionals seeking precise monitoring solutions for music production, film scoring, or any audio-related projects, the Dynaudio PMN monitors provide an exceptional listening experience that stands the test of time. With their stellar performance and innovative features, these monitors have become a top choice for sound engineers, musicians, and audio enthusiasts alike.
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