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Correct Center Placement under a Screen

christophe-anet, modified 13 Years ago.

Correct Center Placement under a Screen

Jedi Knight Posts: 188 Join Date: 3/23/09 Recent Posts


Please allow for one question about speaker placement - I just got my new center/surround 1037Cs (after using an 1037C stereo setup for a couple of months). I am thinking about flush mounting the front 3 speakers eventually - until then I have to place the Center 1037 right under my projection screen. 2 placement options are available - the 1037 standing directly (decoupled) on the floor or placed horizontally about 40 cm above the floor (on top of a wooden shelf). Which placement is preferable from an acoustical POV?

Thanks alot.


Thanks for this interesting question. The critical issues with loudspeakers placed below the projection screen are woofer loading due to the vicinity of the floor and the first reflections that will occur from the floor surface. Depending on the geometry - loudspeakers - floor - listening position - such reflections will affect a different parts of the frequency spectrum. Such reflections should be minimised as they can create boominess, sound colouration and/or blurring of the sound stage.

Vertical placement will place the woofer close to the floor and increase its output and this will definitely change the balance to boomy. In such case the dip switches should be used to substantially reduce the woofer level. So, the practical cure is to place the loudspeaker as far away as possible from reflective surfaces.

In your case, the best would be to place the 1037C horizontally but as high as possible - i.e. with the upper part of the enclosure just below the screen and tilt the speaker axis upwards towards the listening position. This in order to minimise all possible floor reflections for all drivers. The last step is, as always, to calibrate your system to retrieve a flat response across the entire spectrum.

Best regards,