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Niles HDL-4 Installation & Operation Manual
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Niles HDL-4 Installation & Operation Manual

High definition speaker selection system
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M O D E L
HDL-4
HDL-4
HDL-4
HIGH DEFINITION SPEAKER SELECTION SYSTEM
I N S T A L L A T I O N & O P E R A T I O N G U I D E

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Summary of Contents for Niles HDL-4

  • Page 1 M O D E L HDL-4 HDL-4 HDL-4 HIGH DEFINITION SPEAKER SELECTION SYSTEM I N S T A L L A T I O N & O P E R A T I O N G U I D E...

  • Page 2: Table Of Contents

    P E A K E R Introduction The HDL-4 allows you to connect up to four pairs of speakers to your stereo receiver or amplifier and play any one pair, any combination of pairs, or all pairs at once. You don't have to worry about overloading your amplifier.

  • Page 3: Features And Benefits

    I G H E F I N I T I O N Features and Benefits The HDL-4 offers a number of improvements over other speaker selectors: High power handling capability of 250 watts/channel continuous music power. Pre-printed Room Labels are included for easy identification of speaker ON/OFF buttons.
  • Page 4 100% tested, electronically and acoustically, for frequency response, distortion and power handling. Standard 17" width allows the HDL-4 to stack neatly with other standard size components. Ideal for both home and commercial sound installations. Only an 1/8" standard screwdriver and wire stripper are required for installation.

  • Page 5: Installation Considerations

    E F I N I T I O N Installation Considerations HDL-4 Power Handling The HDL-4 is designed for use with a receiver or amplifier having a maximum power output of 250 watts per channel at 8 ohms. Damage caused by the use of a higher-power receiver or amplifier will void the warranty.
  • Page 6 With four pairs of 4-ohm speakers playing, the load drops to slightly under 4 ohms. If you intend to use the HDL-4 with more than two pairs of 4-ohm speakers, it is recommended that you verify that the "TECH TIP"...
  • Page 7 Using the HDL-4 with Tube-Type Amplifiers Virtually all tube amplifiers must have a load connected at all times. If the amplifier to be connected to the HDL-4 is a tube amplifier, be sure to always have at least one pair of speakers switched on at all times.
  • Page 8 P E A K E R E L E C T I O N Y S T E M Tube Amplifier Figure 1 Using a Tube Amplifier Niles HDL-4 AMPLIFIER SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1 ON OFF...
  • Page 9 Attractive low-profile design. Simple Connect up to four pairs push-button operation. Niles Audio Corporation, Miami, Florida USA P E A K E R E L E C T I O N of speakers. AMPLIFIER SPEAKER 4 SPEAKER 3...

  • Page 10: Installation

    E F I N I T I O N Installation 1. Select a convenient mounting location for the HDL-4. 2. Run all the necessary wiring to the HDL-4. Label the wires for future reference. See (Figure 2). TUNER ON OFF...
  • Page 11 HDL-4 to the positive terminals on the amplifier and speakers and the negative terminals on the HDL-4 to the negative ter- minals on the amplifier and speakers. Re-install the connec- tors if they were removed. See (Figure 4).

  • Page 12: Operation

    I G H E F I N I T I O N Operation There are two ways to use the HDL-4. You may play one pair "TECH TIP" of speakers at a time, or play multiple pairs simultaneously. If your amplifier or If you intend to play more than one pair of speakers at the receiver has "A"...
  • Page 13 1. Make sure the amplifier or receiver power is OFF and set the volume to minimum. 2. On the right side of the HDL-4's front panel is a button labeled PROTECTION. This button activates the HDL-4's impedance correction circuitry. The circuitry assures that your receiver or amplifier will see a safe operating load when playing multiple speaker pairs simultaneously.
  • Page 14 Protection chart for the correct setting of the PROTECTION button. Constant Protection Switch The HDL-4 is equipped with a manual override for the protec- tion circuit that enables you to defeat the front panel protection switch and maintain constant impedance protection. This will safeguard your amplifier from being overdriven due to acciden- tal or improper use by anyone unfamiliar with the equipment.

  • Page 15: Specifications

    The best way to balance speaker volume is to equip each of the speaker pairs in your system with a Niles volume control. The controls allow you to adjust the volume of each speaker pair individually.
  • Page 16 NILES ® Niles Audio Corporation www.nilesaudio.com ©1999 Niles Audio Corporation. Niles and the Niles logo are registered trademarks of Niles Audio Corporation. 12331 S.W. 130 Street Printed in USA 2/99 DS00099A Miami, Florida 33186 Tel: (305) 238-4373 Fax: (305) 238-0185...