Room acoustics, Speaker setup, Subwoofer

speaker positioning

The advice given here is a general guideline for setting up speakers. Refer to the documentation supplied with your speakers for

more precise positioning and installation information, and see www.dolby.com/consumer/home_entertainment/roomlayout.html for usefuI information on listening-room layouts.

Room acoustics

Your room’s shape and how it is furnished will affect the sound you hear. For instance, too many bare surfaces can cause reflections that may add harshness to the sound. Carpets, wall-hangings and curtains can all help.

If you have a choice of listening rooms, avoid one that is perfectly square or has one dimension exactly twice another. Such a room can aggravate resonances that colour the sound.

The closer you place a speaker to corners and the intersection of wall and floor or wall and ceiling, the stronger the bass output, which may over-emphasise the bass. Moving a speaker just a few inches can sometimes make a big difference.

Speaker setup

Proper speaker placement is the key to the best home theatre sound (see diagram).

As a rough guide, speakers should be placed on rigid stands at about 15cms from the rear wall and at least 60cms from any side wall. Speakers should never be placed on the floor (unless they are floor-

standing speakers), or in corners.The speaker drivers should be at, or a little above, ear level when seated. If possible, centre your seating area between the surround speakers.

The final sound will depend on the acoustics of the listening room and experimenting with speaker positioning is very worthwhile.

Subwoofer

The location of Logo will affect the overall sound quality. Placing the subwoofer next to a wall or in a corner will often boost efficiency and give a cleaner low bass sound. However, all rooms react differently and we recommend that you experiment with subwoofer positioning.

Speaker stands

The more firmly a speaker is held, the better it will sound.We recommend the use of rigid metal stands of 40–60cms height. Properly damped types that do not ‘ring’ when tapped with a pencil (either by virtue of construction, or because they are filled with dry silver sand) will bring out the best in a speaker. Ensure that the stands and/or speakers do not wobble.

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Logo specifications

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