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Special Forty User manual

Positioning

Dynaudio loudspeakers consist of classic bass reflex loudspeaker designs with no unusual or extraordinary positioning demands. Every room will still have its own particular sound characteristics. Any room is also shaped and decorated uniquely, and therefore remains independent regarding options for positioning loudspeakers.

The following steps are general suggestions that will make the correct positioning easier to achieve.

Figure 3: Positioning the loudspeakers.

General recommendations

The following explanations refer to Figure 3.

  • The distance between each loudspeaker and your listening position should be the same (B). Try to achieve an isosceles triangle.
  • The distance between the loudspeakers should be the same or better slightly less than the distance between each loudspeakers and your listening position (A, B).
  • The closer the listening position is in relation to the loudspeakers, the closer the speakers can be positioned to each other.
  • As a starting point, it is recommended that the speakers be about 2 meters apart from each other for the best results (A).
  • If the speakers are positioned too close to each other, the stereo image will not seem realistic; if that distance is too wide, the image may leave an acoustic hole in the middle.
  • Paying attention to the image during listening tests will help dictate optimum placement during experimentation and set-up.

CAUTION

Excessive brightness

Direct sunlight or excessive brightness can affect the colour of any natural wood veneer (the structural integrity of the cabinet will not be affected).

To maintain the aesthetic quality of the loudspeakers for the long term, placing such in very warm, very cold, or very humid environments should be avoided.

Figure 4: Distance to walls.

Distance to back and side walls

Every loudspeaker not only disperses sound energy directly into the room, but also to the side and even backwards. As a result, time-delayed reflections occur and add to the original music signal. Thus, when loudspeakers are positioned too close to walls, the sound quality can be restricted.

Dynaudio loudspeakers were developed to be placed free-standing, and therefore they reach their optimum performance when positioned as clear of any walls as possible.

To reduce possible influences from the back and sidewalls, the distance to these boundaries should ideally not be less than 0.5 meter (see Figure 4).

Adapting the bass reflex port

To minimise low frequency reflections, which will be heard as a thickening of the sound, the loudspeaker models can be adapted to the room’s acoustic character by using foam plugs in the bass reflex port. This will essentially attenuate the room-induced boost in the low frequency range by dampening the deep frequencies, yielding a more clear and tight sound when the loudspeaker is positioned near rear walls.

Fully insert the foam port plugs packed with your loudspeaker into the bass reflex port, to attenuate the bass output (if required).

If the attenuation of the bass volume is too high (bass level too low) remove the inner part of the foam plug. Then fully insert the foam ring in the bass reflex port. Make sure the ring is formed in a concentric circular shape within the port to prevent reduced and turbulent airflow.

Floor-standing loudspeaker set-up

The floor-standing models feature a special base construction, which offers both an ideal performance and mechanical basis. Integrated into the base plinth are four individual spike assemblies. These stabilise the cabinet on an extremely small contact area, and therefore prevent any wobbling while offering optimal resonance control. The individually adjustable spikes allow levelling of the cabinet on uneven floors.

Compact loudspeaker set-up

The compact models are designed to offer exceptional performance while taking up minimal space. The mini-monitors will realise their optimum performance when used in conjunction with a dedicated stand (such as the Dynaudio Stands) to position them at the proper height while absorbing any resonance.

Due to its dimensions, you can also place the loudspeaker on a ledge or shelf or on top of furniture. But to avoid the possibility of any negative influence on sound quality, one should take care to utilise a stable surface offering a wide enough space in front of the loudspeakers as to not limit the sound quality and performance. In such applications or if placing the speakers in enclosed audio/video furniture, the bass reflex port can usually be left unplugged as long as there is minimal clearance to the boundaries at the top and rear of the loudspeaker cabinet.

Figure 5: Angle inwards loudspeakers to improve imaging.

Loudspeaker Toe-In

Depending on your personal listening environment and room dimensions, the loudspeakers may be angled in towards the listening area to focus the sound radiation. This positioning will typically improve imaging and is especially recommended by Dynaudio (see Figure 5).

Room and furniture influence

The sound quality of any loudspeaker is influenced by the furniture, wall materials and other objects in the listening room. For example, large rooms without much furniture and many clean, hard wall surfaces can give a bright and diffuse sound with diverse echoing frequencies. A room with thick carpet, curtains and soft furniture surfaces will give a warmer, darker and less lively sound.

Grille

A cloth grille is included and can be affixed to the cabinet to help protect the drivers from dust and any other influences. The grille is acoustically optimised, but the highest sound quality levels will be attained without any grille covers in place during listening

To remove the grille, gently pull the grille straight out from the front.

To fit the grille, line up the grille and let it snap in place.