MUSICSON DP SYSTEMS - Page 4

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ISP-1014), offering, thus, a high level of clarity and intelligibility
withinthevocalfrequencyrange.
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For the high and high-mid frequencies, we have used a 4” (100mm)
diaphragm,2”-throatcompressiondriver.ThisdriverfromARPfeaturesvery
specialcharacteristics.
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1.-Anoptimisedmagneticstructurehasbeenusedformaximumefficiency.
Inordertoachievethis,aNeodymiummagnethasbeenused,offering:
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a. - 20% more induction in the magnetic gap, increasing the energy
transferred to the coil and, thus, to the moving system. This means an
averageperformanceincreaseof2dBtothe2”driver,thisbeingespecially
significantforfrequencyhigherthan100Hz,wherethisincreasereachesup
to4dB.Alinearresponseupto20kHzisachievedthisway.
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b.-Areductioninweightof45%and25%intheoveralldiameter.
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2.-Ontheotherhand,atitaniumdiaphragmwithaspecialconfiguration
hasbeenusedinordertoreduceharmonicdistortion.Themembraneisfixed
toasuspensionmadeofatechnicalpolymer.Theuseofthispolymerhastwo
reasons: first, the self-resonance of this material is lower within the
audible frequency range, when used at high power levels, second, this
material is more resistant to deformation through diaphragm excursion. It
hasbeenproventhattitaniumsuspensionsdeterioratethefrequencyresponse
andincreasedistortionlevelsafter3to5yearsofuse,withinthissize
of drivers. The mechanical resistance of these materials is much higher,
almostdoublingtheirlifecycle.
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Inordertooptimisethefrequencyresponse,anexponentialhornhasbeen
used,allowingthesystemtoperformwithoutlossesupto19500Hz.
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This enclosure includes a rigging system to configure clusters, which
enhancethesoundspreadandthrow.Itincludesalsoafrontgrille,covered
withasturdyfilteringtechnicalfoamtoprotectthespeakers.(OnlyDP-4)
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