FINDING OPTIMAL SETTINGS

frequency response; see fig. 13. In the same manner, with the cross-over frequency for the main speakers set too low (cross-over freq. for the subwoofer too high), there will be too much of an overlap between subwoofer and main speakers, again resulting in incorrect overall frequency response; see fig. 14. Correct settings are illustrated in fig. 15.

Fig. 13

Subwoofer cross-over frequency set too high (main speakers too low): Bump in frequency response.

Fig. 15

Subwoofer & main speakers cross-over frequencies set correctly: Smooth frequency response.

Many multi-channel processors and receivers provide elaborate bass-management systems where the cross-over frequency for both subwoofer and main speakers can be set. If you are using such a bass-management system, you can select the "Flat" setting on the subwoofers remote control, as all filtering has been done by the bass- management system. Carefully follow the instructions for the amplifier/processor or receiver.

Fig. 14

Subwoofer cross-over frequency too low (main speakers too high): Gap in frequency response

• If you are using your system's bass-management system, ensure that the subwoofers cross-over frequency hasn't been set to the same or lower frequency compared to the setting chosen with the bass management system.

•Selecting the correct frequency depends to a large extend on the main speakers. Sometimes main speakers are specifically intended to work with a subwoofer. In such cases, the main speakers can get damaged by a full-range amplifier signal. If in doubt, check the instruction manual for the main speakers for any restrictions or recommendations.

Of course it is possible to combine the subwoofer in a system where the loudspeakers are being fed with a full- range signal. In that case, setting the cross-over frequency for the subwoofer depends very much on the natural roll-off frequency in the bass of the main speakers. In general, a large, floor-standing speaker will still have significant Output in the deeper bass range, in which case the cross- over frequency should be set to 60Hz. A small or very small speaker will have less deep bass Output in which case the setting should be 80Hz. or 100Hz. To find the correct setting in such scenarios:

•Play a music track that has a significant amount of bass over a large bass region. An instrument such as a double-bass or bass-guitar is very suitable. Starting with the "60" Hz position (first button left in row No. 3 in fig. 6), use this track to set the subwoofers relative volume level.

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Dynaudio BM12S, BM 10S manual Finding Optimal Settings
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BM 10S, BM12S specifications

Dynaudio is a well-respected name in the world of audio monitoring, known for producing high-quality studio speakers that deliver exceptional performance. Two notable products in their lineup are the BM 10S and BM 12S subwoofers, designed to complement their BM series studio monitors. These subwoofers provide an impactful low-frequency foundation for music producers, sound engineers, and audiophiles alike.

The Dynaudio BM 10S features a 10-inch woofer, while the BM 12S boasts a larger 12-inch driver. Both models utilize Dynaudio's proprietary driver technologies, ensuring that low-end reproduction is both precise and articulate. The robust construction of these subwoofers is complemented by high-grade materials that enhance durability and performance, ensuring reliability even in demanding studio environments.

One of the standout features of the BM 10S and BM 12S is their integrated amplification. The BM 10S is powered by a 150-watt amplifier, while the BM 12S ramps up the power to 200 watts. This built-in amplification allows for efficient power management and provides ample headroom for dynamic audio playback. Both models exhibit a frequency response that extends down to 29 Hz, enabling users to hear vital low-end details in their mixes, which is crucial for genres like electronic music, hip-hop, and film soundtracks.

The BM series subwoofers also come with low-frequency shelf filters, allowing users to tailor the bass response to fit the acoustics of their studio room. This is a critical feature for achieving an accurate monitoring environment and minimizing acoustic issues such as standing waves or room modes. Moreover, the subwoofers offer flexible connectivity options, making it easy to integrate them into existing setups, whether for professional studio work or home audio applications.

In summary, the Dynaudio BM 10S and BM 12S subwoofers represent a perfect blend of advanced technology, robust construction, and user-centric features. With their powerful amplification, precise bass response, and adjustable settings, these subwoofers effectively enhance the monitoring experience, enabling sound professionals to produce music with confidence and clarity. Whether one is mixing tracks or enjoying high-fidelity sound, the BM 10S and BM 12S deliver exceptional performance that meets the high standards of discerning audio professionals.
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