formulaonenut
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I need to install my B&W DS6 surround speakers and this is what the manual says :-
P O S I T I O N I N G (figure 3)
These surround speakers conform to the specifications of Lucasfilm?s Home THX audio system and differ from most conventional speakers in that they have a dipolar radiation pattern. The sound is projected mainly backwards and forwards - with drive units mounted on opposite sides of the cabinet. Sound radiated in one direction has the reverse polarity to that radiated in the opposite direction. In a plane at right angles to these two lobes, the sound is substantially cancelled out. This is the so called null plane. The speakers are used with the null plane directed towards the listeners, who therefore hear very little direct sound. Most of the sound they hear has been
reflected off the surfaces of the room and is diffuse in nature. This gives the enveloping and atmospheric sound field that is necessary for good Home THX and Dolby Pro Logic reproduction.
The speakers should ideally be mounted on or close to the side (walls of the room and in line with the centre row of listeners. Keep the speakers a least 0.5m (20in) from the ceiling and over 1m (40in) clear of the rear walls. For the best atmospheric effect mount the speakers above the head of the listeners. As with all speakers some experimentation will reward the listeners with the optimum performance.
However I cannot mount the speakers on the side walls as there are windows there. I need to mount them on the rear walls. Will this affect the sound much ? Do I follow the other principal measurement still or do different ones apply ?
Finally what cable should I use ? For the front speakers and center I went to A1 Radio and bought some thick transparent copper wire at around R10/m.
P O S I T I O N I N G (figure 3)
These surround speakers conform to the specifications of Lucasfilm?s Home THX audio system and differ from most conventional speakers in that they have a dipolar radiation pattern. The sound is projected mainly backwards and forwards - with drive units mounted on opposite sides of the cabinet. Sound radiated in one direction has the reverse polarity to that radiated in the opposite direction. In a plane at right angles to these two lobes, the sound is substantially cancelled out. This is the so called null plane. The speakers are used with the null plane directed towards the listeners, who therefore hear very little direct sound. Most of the sound they hear has been
reflected off the surfaces of the room and is diffuse in nature. This gives the enveloping and atmospheric sound field that is necessary for good Home THX and Dolby Pro Logic reproduction.
The speakers should ideally be mounted on or close to the side (walls of the room and in line with the centre row of listeners. Keep the speakers a least 0.5m (20in) from the ceiling and over 1m (40in) clear of the rear walls. For the best atmospheric effect mount the speakers above the head of the listeners. As with all speakers some experimentation will reward the listeners with the optimum performance.
However I cannot mount the speakers on the side walls as there are windows there. I need to mount them on the rear walls. Will this affect the sound much ? Do I follow the other principal measurement still or do different ones apply ?
Finally what cable should I use ? For the front speakers and center I went to A1 Radio and bought some thick transparent copper wire at around R10/m.
