Alphasonik FW1032 Manuale d'uso - Pagina 8
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If you're planning to build your own enclosure and you wonder what type of
enclosure best suits your needs this page will help you choose the correct
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enclosure. There are many different types of enclosures. The two most
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common used enclosures are sealed and vented enclosures. This page will
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show the advantages and disadvantages of the two enclosures.
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Advantages of a sealed enclosure
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*High power handling capability
*Great transient response
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*Tolerant of minor enclosure size variation
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*Easy to construct
*Smooth rolloff (12dB/octave)
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Disadvantages of a sealed enclosure
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*Requires a woofer with a long excursion for better low bass frequency
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response.
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*Can have lower sensitivity than ported enclosures.
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*When using high power and small enclosures, the woofer is not in an ideal
cooling environment.
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*Less low bass as compared to a properly tuned vented enclosure above
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the ported tuning frequency.
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Advantages of a vented enclosure
*Increased output around vented tuning
*Higher power handling above the port tuning frequency
*Extended frequency response
*Magnet is in a good cooling environment
*Handles higher bass frequencies with less distortion
Disadvantages of a vented enclosure
*Vented enclosure transient response is not as good as sealed boxes be-
cause of the resonant effect of the vent tuning
*Midrange sound coming from inside the enclosure through the vent
can produce unpleasant sound coloration.
*Loss of cone movement control below vent tuning, which can result in high
distortion and mechanical failure of the driver.
*Lower power handling below the port tuning frequency.
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