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Niles Audio OS-25 manual

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Table of contents for the manual

  • Page 1

    MODEL OS-25 MODEL OS-25 Indoor/ Ou t door Loudspeaker . B LENDING H IGH F IDELITY AND A R CHITE CTURE ® INST ALLA TION & OPERA TION GUIDE ® Niles Audio Corporation 12 33 1 S. W . 1 30 Street M iami, Florida 3 3 1 86 T el: (305) 238-43 73 Fax: (305) 238-0 1 85 © 2000 Niles Audio Corporation. DS00272ATW Printed in Taiwan[...]

  • Page 2

    INT RO D UC TIO N The OS-25 marries unparalleled listening satisfaction with the freedom to listen to music anywhere! You can use them indoors and outdoors (even on a boat). The extraordinary sonic performance of the OS-25 was achieved by harmoniz- ing unique and proprietary technology with the most advanced manufacturing methods and materials avai[...]

  • Page 3

    Low Diffraction MicroPerf ™ Aluminum Grille and Front Baffle The aluminum MicroPerf ™ grille of the OS-25 has hundreds of precisely sized perforations, creating an acoustically transparent grille. The aluminum construc- tion resists oxidation enabling years of trouble-free operation in the harshest conditions. The front baffle is gently curved [...]

  • Page 4

    PA R TS GU I DE[...]

  • Page 5

    Incorporating a Volume Control It’s possible to control the volume of the sound at the speaker location. Plan to wire the system so that each pair of speakers has it’s own volume control. Niles makes a wide range of indoor and outdoor volume controls. Consult your local Niles dealer for more information. Volume controls are connected in line wi[...]

  • Page 6

    Placing the OS-25 for the Best Sound Quality The OS-25 ’s dispersion patter n is very broad. The speaker is very sensitive and will handle a lot of amplifier power. This allows good sound quality over an extremely large listening area. However, if a single pair is positioned to provide coverage of a very large room or patio, you will have “hot [...]

  • Page 7

    1. If the speaker is never going to be exposed to sudden accidental impacts, wind, waves or earthquakes you can simply hang it on a nail using the nail hole(s) of the bracket (See Figure 7) . 2. The safest and most secure way to mount the speaker is by screwing it to the mounting surface using your own hardware (suitable for the surface you are mou[...]

  • Page 8

    If you are using an applicator or brush and a can of paint, thin the paint first. Thick paint will tend to clog the grille holes. Replacing the Grille Carefully fit the grille into its recess so that it is barely in place. Starting with one corner, go around the speaker, pushing the grille in a little bit each time. You should be gentle, the alumin[...]

  • Page 9

    INST ALLA TION Mounting the Bracket 1. Remove the bracket knobs and the bracket from the speaker. 2. Hold the bracket up to the mounting surface. The speaker can be mounted either horizontally or vertically. Hold the bracket so that the speaker wire fits through the large, circular wire hole in the bracket. Align the bracket to be square with the s[...]

  • Page 10

    3. Stand so you are the same distance from each speaker and listen to the rich- ness of the bass and the loudness of the sound. 4. Turn off the amplifier and reverse the connections on one speaker only. 5. Repeat the listening test with the same setting of the volume control. When the sound has a richer bass and is slightly louder the speakers are [...]

  • Page 11

    SP E CI FIC AT I O N S Recommended Amplifier Power Five to one hundred fifty watts per channel Nominal Impedance 4 Ohms Frequency Response 68 Hz to 2 1 kHz, plus or minus 3 dB (on axis) Sensitivity 91 decibels for 2.83 volts of Pink Noise, measured at 1 meter on axis Wiring Requirements Sixteen to eighteen gauge 2-conductor (unshielded or shielded)[...]

  • Page 12

    DETACH HERE AND RETURN TO: Niles Audio Corporation Warranty Registration Dept. P .O. Box 160818 Miami, Florida 331 16-0818 Model Purchased __________________ ____________ _____ ________________ _______ _________________ Serial Number _____________ _____________ _______ _________________________ _________________ Date Purchased (month/day/year) ____[...]