Finding optimal Phase Settings

FINDING OPTIMAL SETTINGS

•Listen carefully to the bass-line played by the instrument. As it goes up and down in the bass range, the overall bass volume should remain the same, be it with very deep or higher bass notes. Particularly with very small main speakers, it may be that you can hear a "hole" in the bass response: You can hear the deepest bass notes and everything from lower midrange easily, but overall the bass leaves a thin impression. On the other hand, it may be that using the 60Hz setting the system already sounds good. In both cases, select the next setting, "80" Hz.

•Playing the same track at the same volume level, again listen to the overall bass volume level. If the apparent hole in bass response is still present or if the system sounds good now, move on to the next setting, 100Hz. Should the bass volume suddenly become louder or bloated at certain tones compared to the 60Hz setting earlier, revert to this setting; in this case setting the cross-over frequency is done.

•Again play the track to listen to the overall bass volume level. If the bass sounds correct now, leave the setting at 100Hz. Should the bass volume suddenly become louder or bloated at certain tones compared to the 80Hz setting earlier, revert to this setting.

Phase

With the phase settings you can adjust the timing relationship between the subwoofers and main speakers. If either subwoofer or main speaker are slightly delayed in response in relation to the other, it can result in decreased bass Output in the frequency response area where they overlap each other..

The Phase relationship between subwoofer and satellite speakers is very dependent on relative distance, construction and working principles of the main speakers. Fig 16 shows a case whereby phase of the subwoofer and main speakers are incorrect in the critical overlap area, thus significantly reducing acoustic Output in the listening room in that area.

Fig. 16

Incorrect phase relation of subwoofer to main speakers in critical overlap area: Reduced acoustical Output in overlap area, even if levels are set correct.

•Playing the same bass-rich track which also covers the overlap area, repeatedly press the 0°, and its opposite phase, the 180° button in succession. Without changing volume level, do the same with the 90° and its opposite phase, the 270° button (No. 5 in fig. 6). Note which set of phase settings (0°-180° or 90°-270°) provides the biggest difference in bass response.

•Using the set of phase settings found in the step above (either 0°-180° or 90°-270°) press each of the two buttons in alteration. The position in which you experience the most bass is the correct setting, even if it appears that the bass is too much (this can be adjusted for later).

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.