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ANNEXE A
Guide du placement d’un caisson de basse
- 13 -
Illustration de cette technique
Si vous choisissez la technique du « Crawl test », ce que vous entendrez ou verrez
sur les courbes de réponse en fréquence sera différent de ce qui est décrit dans ce
document. Les essais que nous avons réalisés visent à illustrer l’intérêt de cette
technique dite de « Crawl test ». Mais ce n'est qu'un exemple, et ce que vous
entendrez ou verrez, dépendra des propriétés acoustiques de votre propre pièce.
Figure 1 : configuration de la salle d’écoute & proposition de placement des caissons
Détermination à "l'oreille"
Dans l'ordre pour utiliser la technique du « Crawl test » :
1. Nous plaçons le caisson de basses sur la position d’écoute principale. Pour
éviter d’avoir à soulever un caisson trop lourd sur le fauteuil, nous avons décalé ce
dernier et fait glisser le caisson à sa place.
2. Nous avons lancé la lecture d'une musique via notre système audio. Nous
avons choisi une chanson comportant des répétitions dans la mélodie et des basses
modérées.
3. Nous avons remis le volume du caisson sur son réglage de sortie d’usine.
4. Le volume de l'amplificateur de la chaîne Hi-Fi est réglé de manière à
obtenir un niveau modéré.
14


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