Air_US_rev_111.qxd 16-12-2004 14:17 Page 29

CALIBRATING THE SUBWOOFER - with the main monitors

LFE Gain

Range: 0 to +14dB

The LFE channel can be boosted up to 18dB using this parameter.

Polarity

Range: 0 or 180º

If the Subwoofer is correctly placed, setting the Polarity parameter at 180º should result in a full Phase cancellation at the set Cross -over frequency. If this is not the case - the Phase parameter described below should be adjusted.

Phase

Range: 0 to 180º

Phase Introduction

The integration of the AIR Base subwoofer with the AIR monitors requires on-location tuning. Apart from level calibration and choosing a Bass Management Crossover (X-over) frequency, the issue of phase alignment remains. For this purpose, the AIR Base has a 0-180 degree phase adjustment (in 5 degree steps) and a Phase Reverse function. The optimum setting of these will depend on several factors:

1.Room acoustics

2.Placement of monitors and listening position

3.Choice of X-over frequency

4.AIR Monitor type (6 or 15)

Phase settings are automatically saved and linked to the currently selected Cross-over frequency. Phase settings are Global settings and are therefore not saved with individual presets.

Initial setting

During calibration of the AIR Base's DSP software, we have come up with default settings that we found optimal in our listening room. If you're placing the AIR Base at the same distance from the listening position as your AIR Monitors, the default phase settings can be used as initial guidelines for setting the phase. If the distances are significantly different, these values are not likely to be optimal.

Adjustment

Now play repeatedly a low-frequency sweep signal that sweeps over the X-over frequency that you have chosen. Tracks 31-42 on the AIR Test CD may be used. Between each sweep, change the Phase Reverse setting. Note the difference. Ideally, with the right level calibration and phase setting, the sound should cancel out and virtually disappear at or near the X-over frequency, when the Phase Reverse control is in one position. Tune Phase Adjust to get the largest possible difference between the two Phase Reverse settings. Then leave it in the position where no cancellation occurs.

Iteration

You may need to iterate quite a bit, maybe readjust the level calibration a bit too. You may even want to reconsider your initial choice of X-over frequency and/or monitor placement and start the process over again. Be patient: The time spent getting this right is well spent.

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Dynaudio pmn manual LFE Gain, Polarity, Phase
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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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