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SAE Magazine 13-2

200 S tudents were reminded that no matter how hard they tried to build a speaker they had to obey the laws of physics. But despite this their creative talents were displayed through the end products they produced. The loud speaker building started with students choosing the woofer, something which operate on a set of parameters known as “Thiele and Small” (T&S). Generally speaking, a finished loudspeaker is con- sidered a set of vibratory systems. These are made up of components such as an enclosure, woofer and tweeter and all well ‘tuned’ to achieve certain results. The term tuned refers to the compatible vibration- al characteristics of each element to create the re- quired effect such as tonal balance. The tuning is not an easy process, given that the vibratory sys- tems are different in nature. On a sounding loudspeaker, there are mechanical, electric, acoustic and other elements that must be made compatible. The (T&S) parameters arise from electro-mechan- ical analogies. They correspond to a mathematic model where the tuning is achieved through the analysis of every characteristic of the subsystems. This includes elements such as the enclosure, the woofer and the tweeter. Events & Activities // Speakers Workshop Nowadays, it is enough g T&S parameters and using available to tune them in. achieved without making help of graphics that show Each graphic corresponds Put simply, with the help size of the enclosure we h The building materials an lysed and at this point of t This may be enough to hig speaker with rigid constru its walls to vibrate sound without care and with a th The choice of a tweeter an over are made simultane of the enclosure. At the end of the challenge uation of the speakers. On a sounding there are m electric, ac other elemen be made c

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