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E F I N I T I O N

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Y S T E M

Operation

There are two ways to use the HDL-4. You may play one pair
of speakers at a time, or play multiple pairs simultaneously.

If you intend to play more than one pair of speakers at the
same time, you will need to become familiar with the opera-
tion of the HDL-4's PROTECTION button.

Playing One Pair of Speakers At a Time

1. 

Make sure the amplifier or receiver power is OFF and set

the volume to minimum.

2. 

Locate the ON/OFF button on the HDL-4 which corre-

sponds to the speaker pair you wish 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 (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.

5. 

To turn off the speaker pair, simply press the correspond-

ing ON/OFF button on the HDL-4.

"TECH TIP"

If your amplifier or

receiver has "A" 

and "B" speaker-

pair outputs, 

connect the HDL-4 

to the "A" outputs.

Do not connect 

anything to "B". 

This will prevent 

the amplifier or

receiver from driving

an unusually low
impedance load.

Содержание HDL-4

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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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