User manual INFINITY REFERENCE 1062W

[. . . ] Remember to keep your sales receipt with this manual in a safe place so that both are available for future reference. WARNING Playing loud music in an automobile can permanently damage your hearing, as well as hinder your ability to hear traffic. The maximum volume levels achievable with Infinity speakers, combined with high power amplification, may exceed safe levels for extended listening. Using low volume levels when driving is recommended. [. . . ] Optimum sealed enclosures are always smaller than other types of enclosures optimized for a particular speaker, so they require the smallest amount of space inside the vehicle. Vented enclosures provide better efficiency in the 40Hz ­ 50Hz range, but this efficiency comes at the expense of sound in the lowest octave (below 40Hz) and at the expense of some control and power handling. If you are using a small amplifier, a vented box will provide more bass output from less power. Vented enclosures are also well suited to a variety of music types. Because vented enclosures require the volume of the enclosure and the size of the port to have a specific relationship with the characteristics of the woofer, the enclosure must be built exactly to the specifications provided. While there are some prefabricated vented boxes available, matching a prefabricated box to a particular woofer is difficult. If you wish to use a vented enclosure, it is strongly recom-mended that you have your authorized Infinity dealer build it or verify that your design is correct if you wish to build it yourself. An optimum vented enclosure is always larger than the optimum sealed box for the same woofer and will require more space inside the vehicle. ENGLISH Band-pass enclosures often provide the most output available from any amplifier and subwoofer combination at the expense of sonic accuracy. If sheer SPL (soundpressure level) is what you desire most, choose a band-pass enclosure. Band-passenclosure design is very tricky, and the aid of a computer and enclosure design software is necessary. If you are an experienced installer or have some woodworking experience, you may wish to build the enclosure described in the enclosure design sheet included with this woofer. Fortunately, there are many prefabricated band-pass boxes available and they are all optimized to extract the most output possible from any woofer. Band-pass enclosures can be quite large and may require a lot of space inside your vehicle. POWER HANDLING LIMITATIONS The power handling capability of any woofer is related to both its ability to dissipate heat and the maximum excursion limits of its cone. Once the speaker's voice coil moves outside the magnetic gap, power can no longer be converted into motion, and all the amplifier's power is converted into heat in the voice coil. This voice coil heating is the largest detriment to speaker longevity, so overexcursion should be avoided. Since speaker-cone excursion is different for each type of enclosure, power handling is different for each enclosure. Sealed enclosures exert the most control over the motion of a subwoofer because the air inside the box acts like a spring against the motion of the woofer cone. Larger boxes allow for more excursion, thus providing more low-frequency output for the amount of power used. When placed in a sealed box much larger than the Vas of the subwoofer, it will perform as if it were in an infinite-baffle installation. Vented and band-pass enclosures have the lowest amount of excursion for the amount of sound output. This is a result of port output reinforcing the sound output from the woofer. The mass of the air contained in the port provides an acoustic load on the woofer's cone at the tuning frequency, and this added mass decreases woofer-cone excursion. Vented boxes do not provide adequate woofer control when driven below the tuned frequency (Fb), so proper design is important. A vented band-pass box will have the lowest overall cone excursion, provided a subsonic filter is used. [. . . ] These products are designed for mobile applications and are not intended for connection to the mains. Declaration of Conformity We, Harman Consumer Group, Inc. 2, route de Tours 72500 Château du Loir France declare in own responsibility that the products described in this owner's manual are in compliance with technical standards: Harman Consumer Group, Inc. , 250 Crossways Park Drive, Woodbury, NY 11797 USA www. infinitysystems. com © 2008 Harman International Industries, Incorporated. All rights reserved. REFX60SUBOM 8/08 Infinity is a trademark of Harman International Industries, Incorporated, registered in the United States and/or other countries. ® EN 61000-6-3:2001 EN 61000-6-1:2001 Klaus Lebherz Harman Consumer Group, Inc. [. . . ]