Selecting Loudspeakers for 5.1 (Fandt dette på nettet)

Unlike other forms of encoded surround audio, 5.1 offers full bandwidth capability for the surround and centre channels, with the ability to treat the subwoofer channel as a single discreet special effects playback, or for music applications, as a dedicated low frequency instrument channel. This places new demands on the surround and centre channel loudspeakers in both the mixing environment and the playback environment.

There are two schools of thought for surround system performance; one is intended to replicate the cinema listening experience (which is ironic in that the new cinema sound standards were originally intended to bring cinemas up to the quality that people expected from their home systems); the other is intended to deliver a new level of spatial localisation and flexibility for movies AND music.

The cinema experience surround approach means that the surround and centre channel loudspeakers were often intended to have less demanding bandwidth requirements than the main left and right system, and the surround speakers were to have more diffuse and less defined sound dispersion characteristics than the main left and right loudspeakers.

The more rigorous 5.1 standard proposed by the 1994 Swiss-based ITU requires that all the channels be equipped with high quality, full bandwidth loudspeaker systems. And most importantly, that 5.1 standard requires that all of the left, centre, right and surround loudspeakers should have the same sound character, the same transient behaviour (time domain), and they should be located within specific horizontal and vertical angles in relation to the listening position which requires predictable and controlled coverage characteristics. This is very important for maintaining stable localisation and imaging. The ITU standard for surround loudspeakers offers the greatest promise for a new and expanded listening experience for music and cinema. The capability now exists to place an apparent sound source anywhere within the listening environment, and more importantly, move the sound source smoothly between any of the channels. The matching of loudspeaker performance is a crucial factor in that process, at both ends of the chain, production and listening environment. When the engineer deliberately moves a sound from the front left to right rear, the last thing you want is for that sound source to change in sound character, as that is translated into a different

position shift by the listener's brain.

The need for high quality matched performance loudspeakers applies to both the

recording/mixing environment as well as the home listening environment. The performance has to be there in both portions of the chain, or the original source material and the playback system will compromise the listening experience.

Jeg hælder nok mere og mere til fem helt ens højttalere - det store spørgsmål er stadig hvilke? Skal de spille dybt og derved måske genere hinanden eller skal fokus være på mellem og toppen da det er her at den tydeligste retningsbestemmelse og overgang i lydbilledet sker?

Tror du ikke subben kan klare den dybe del fint alene? Du mener jeg vil mangle punch..sikkert, men så vil jeg ha punch i alle fem kanaler. (er det noget sludder?)

Film og Audio vil jeg prioritere således: Film 40% - SACD/DVDA 60% (hvis man da ellers kan det - noget tyder på enten eller).