M O D E L HDL-6 HDL-6 HIGH DEFINITION SPEAKER SELECTION SYSTEM NILES ® INSTALLATION & OPERATION GUIDE
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M HDL-6 High Definition Speaker Selection System TABLE OF CONTENTS Introduction Introduction 1 Features and Benefits 2 The HDL-6 allows you to connect up to six 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.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M Features and Benefits The HDL-6 offers a number of improvements over other speaker selectors: ● High power handling capability of 250 watt/channel continuous music power. ● Pre-printed Room Labels are included for easy identification of speaker ON/OFF buttons. ● Rear-panel switch for constant or selectable impedance protection. ● Self-cleaning, silver-plated switch contacts assure many years of trouble-free use.
H 3 I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M ● Removable connectors accommodate up to 14 gauge wire or "pins", making the HDL-6 compatible with most "highdefinition" speaker cables. ● 100% tested, electronically and acoustically, for frequency response, distortion and power handling. ● Standard 17" width allows the HDL-6 to stack neatly with other standard size components. ● May be used with 4, 6, or 8-ohm speaker systems.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M Installation Considerations HDL-6 Power Handling The HDL-6 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. Consult your Niles dealer, or receiver/amplifier manufacturer, if you are uncertain about the power rating of your receiver or amplifier.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M The actual impedance load the HDL-6 presents to your receiver or amplifier will vary, depending on how many speaker pairs are playing, and the impedance rating of each speaker. If you have six pairs of 8-ohm speakers playing, the HDL-6 will present a 4.3 ohm impedance load to your receiver/amplifier. With six pairs of 4-ohm speakers playing, the load drops to slightly under 4 ohms.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M Avoiding Interference Speaker wires can act as an "antenna" for electrical noise. Locating speaker wires too close to a light dimmer or switch may cause a "buzzing" or "popping" sound to be heard through the speakers. If you must locate the HDL-6 wiring near electrical devices, route the speaker wires several feet away from the electrical wiring.
H I G H D S E F I N I T I O N S P E A K E R S E L E C T I O N Y S T E M Tube Amplifier Figure 1 Using a Tube Amplifier 150 150 Niles HDL-6 AMPLIFIER L+ NILES Niles Audio Corporation, Inc.
H I G H D S E F I N I T I O N S P E A K E R S E L E C T I O N Y S T E M Recessed areas for custom room labels. HDL-6 HIGH DEFINITION SPEAKER SELECTION SYSTEM PROTECTION Attractive low-profile design. 1 2 3 4 5 Protection switch safeguards your receiver or amplifier even with all 6 pairs of speakers playing. Connect up to six pairs of speakers. Simple push-button operation.
H I G H D S E F I N I T I O N S P E A K E R S E L E C T I O N Y S T E M Installation 1. Select a convenient mounting location for the HDL-6. 2. Run all the necessary wiring to the HDL-6. Label the wires for future reference. See (Figure 2). Receiver TUNER Figure 2 Wiring Diagram 94.9 15 Niles HDL-6 AMPLIFIER L+ NILES Niles Audio Corporation, Inc.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M 3. Make the connections to the HDL-6. The amplifier/speaker connectors on the HDL-6 are removable. If you wish, you may remove the HDL-6's connectors to facilitate installation see (Figure 3). Strip 3/8" of insulation from the end of each wire. Tightly twist the end of each wire until there are no frayed ends. Insert each wire into the appropriate hole on the spring-loaded connector terminals.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M Operation "TECH TIP" If your amplifier or receiver has "A" and "B" speakerpair outputs, connect the HDL-6 to the "A" outputs. Do not connect anything to "B". This will prevent the amplifier or receiver from driving an unusually low impedance load. There are two ways to use the HDL-6. You may play one pair of speakers at a time, or play multiple pairs simultaneously.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M Playing Two or More Speaker Pairs Simultaneously "TECH TIP" 1. Make sure the amplifier or receiver power is OFF and set the volume to minimum. 2. On the right side of the HDL-6's front panel is a button labeled PROTECTION. This button activates the HDL-6's impedance correction circuitry. The circuitry assures that your receiver or amplifier will see a safe operating load when playing multiple speaker pairs simultaneously.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N S Y S T E M 4. Turn on the amplifier or receiver and select a source, such as the tuner or CD player. 5. Slowly turn up the amplifier or receiver volume and set it to a comfortable (not maximum) listening level. Be careful not to overdrive or "clip" your amplifier. If the sound becomes muddy or distorted, you have reached the limit of your amplifier's volume capability and should quickly reduce the volume to avoid damaging your speakers.
H I G H D E F I N I T I O N S P E A K E R S E L E C T I O N Balancing Speaker Volume The volume control on your receiver or amplifier serves as the "master" volume for all speaker pairs connected. The volume level of the speakers may vary from room to room. This is caused by several factors. Two lesser factors are the size of the speaker and its efficiency. The largest factor is the physical size of the room.
NILES ®® Niles Audio Corporation www.nilesaudio.com 12331 S.W. 130 Street Miami, Florida 33186 Tel: (305) 238-4373 Fax: (305) 238-0185 © 1999 Niles Audio Corporation. All rights reserved. Because Niles constantly strives to improve the quality of its products, Niles reserves the right to change product specifications without notice. Niles and the Niles logo are registered trademarks of Niles Audio Corporation.
