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Two-piece removable connectors greatly simplify installa-
tion and hookup. All wiring can be attached directly to the
connectors before installing them in the HDL-4.

Removable connectors accommodate up to 14 gauge wire
or "pins", making the HDL-4 compatible with most "high-
definition" speaker cables.

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.

Frequency response: Flat (+0 dB,-0 dB) from 20 Hz to 20 kHz.

Ten year parts and labor warranty.

Proudly made in the USA.

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Summary of Contents for HDL-4

Page 1: ...HDL 4 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 M O D E L HDL 4 HIGH DEFINITION SPEAKER SELECTION SYSTEM HDL 4...

Page 2: ...ing your amplifier The HDL 4 has a pro tection circuit that keeps your amplifier running safely even if you have all four pairs of speakers playing at the same time TABLE OF CONTENTS Introduction 1 Fe...

Page 3: ...ntacts assure many years of trouble free use Isolated left and right channel ground returns make the HDL 4 compatible with all types of amplifiers Massive copper traces on printed circuit board handle...

Page 4: ...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...

Page 5: ...le if two pairs of 8 ohm speakers are connected in parallel the impedance will be 4 ohms two pairs of 4 ohm speakers in parallel become 2 ohms and so on Most receivers or amplifiers are not rated for...

Page 6: ...u use 16 or 18 gauge stranded copper speaker wire for the HDL 4 connections For wiring runs longer than 80 feet 14 gauge wire is recommend ed Using speaker wire larger than 14 gauge for the HDL 4 conn...

Page 7: ...electrical wiring 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 s...

Page 8: ...E C T I O N S Y S T E M Figure 1 Using a Tube Amplifier Tube Amplifier Niles HDL 4 150 150 AMPLIFIER L L R R L L R R L L R R L L R R L L R R SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1 CONSTANT PROTECTION...

Page 9: ...NSTANT PROTECTION ON OFF Niles Audio Corporation Miami Florida USA Recessed areas for custom room labels Attractive low profile design Simple push button operation Connect up to four pairs of speakers...

Page 10: ...ecessary wiring to the HDL 4 Label the wires for future reference See Figure 2 TUNER 94 9 15 AMPLIFIER L L R R L L R R L L R R L L R R L L R R SPEAKER 4 SPEAKER 3 SPEAKER 2 SPEAKER 1 CONSTANT PROTECTI...

Page 11: ...r terminals Be certain that proper phasing is observed connect the positive terminals on the HDL 4 to the positive terminals on the amplifier and speakers and the negative terminals on the HDL 4 to th...

Page 12: ...to play Set it to the ON position 3 Turn on the amplifier or receiver and select a source such as the tuner or CD player 4 Slowly turn up the amplifier or receiver volume and set it to a comfortable n...

Page 13: ...oad you will need to activate the PROTECTION button whenever the overall system impedance might fall below 4 ohms Use the following chart as a guide for setting the PROTECTION button 3 Locate the ON O...

Page 14: ...N OFF button s on the HDL 4 Refer to the 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 c...

Page 15: ...the speaker pairs in your system with a Niles volume control The controls allow you to adjust the volume of each speaker pair individually If all the speaker pairs in your system are equipped with Nil...

Page 16: ...lesaudio com 12331 S W 130 Street Miami Florida 33186 Tel 305 238 4373 Fax 305 238 0185 NILES 1999 Niles Audio Corporation Niles and the Niles logo are registered trademarks of Niles Audio Corporation...

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