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  • Quetz

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    válasz Hohocali #147088 üzenetére

    Erre gondoltam:

    Advantages of the passive radiator include the absence of port noise, and some audiophiles claim the radiator provides a better sounding bass than a ported enclosure. However, the cutoff (-3dB) frequency is slightly higher than ported design using the same driver.

    Other Disadvantages include difficulty in tuning passive radiator designs as they have much higher mass than an equivalent port. In a port, the moving mass is comprised of the air in the port and the driver. The mass of the passive radiator, however, is high because it is the mass of the usually larger moving radiator plus the active driver. It is possible that when the powered subwoofer cone stops, the passive radiator's cone continues to move for a short period of time and may cause the powered driver cone itself to move after the signal has stopped. This so called "ping-pong" effect can cause distortion.

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