Niles Audio HDL-6 User Manual

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M O D E L

HDL-6

HDL-6

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

H I G H D E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

HDL-6

High Definition

Speaker Selection

System

TABLE OF CONTENTS

Introduction

Introduction

1

The HDL-6allows you to connect up to six pairs of speakers

to your stereo receiver or amplifier and play any one pair, any

 

 

Features and

 

combination of pairs, or all pairs at once. You don't have to

Benefits

2

worry about overloading your amplifier. The HDL-6has a

 

 

protection circuit that keeps your amplifier running safely,

Installation

 

even if you have all six pairs of speakers playing at the same

Considerations 4

time.

Installation

9

 

Operation

11

 

Specifications 14

 

1

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

Features and Benefits

The HDL-6offers a number of improvements over other speaker selectors:

High power handling capability of 250 watt/channel continuous music power.

Pre-printedRoom Labels are included for easy identification of speaker ON/OFF buttons.

Rear-panelswitch for constant or selectable impedance protection.

Self-cleaning,silver-platedswitch contacts assure many years oftrouble-freeuse.

Isolated left and right channel ground returns make the HDL-6compatible with all types of amplifiers.

Massive copper traces on printed circuit board handle large amounts of amplifier current, ensuring high dynamic range and clarity.

Two-pieceremovable connectors greatly simplify installation and hookup. All wiring can be attached directly to the connectors before installing them in theHDL-6.

TECH

SUPPORT

HOTLINE

If you have questions regarding the operation of the Niles HDL-6,contact your local Niles dealer or Niles Customer Service at1-800-289-4434.

2

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

Removable connectors accommodate up to 14 gauge wire or "pins", making the HDL-6compatible with most "highdefinition" speaker cables.

100% tested, electronically and acoustically, for frequency response, distortion and power handling.

Standard 17" width allows the HDL-6to stack neatly with other standard size components.

May be used with 4, 6, or 8-ohmspeaker systems.

Ideal for both home and commercial sound installations.

Only an 1/8" standard screwdriver and wire stripper are required for installation.

Frequency response: Flat(+0dB,-0dB)from 20Hz to20kHz.

Ten year parts and labor warranty.

Proudly made in the USA.

3

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

Installation Considerations

HDL-6Power Handling

The HDL-6is 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 ahigher-powerreceiver 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.

Amplifier Impedance Load

As more pairs of speakers are parallel connected to a receiver or amplifier, the overall system impedance becomes lower. For example, if two pairs of 8-ohmspeakers are connected in parallel, the impedance will be 4 ohms; two pairs of4-ohmspeakers in parallel become 2 ohms, and so on.

Most receivers or amplifiers are not rated for use below a 4 ohm load. Most manufacturers do not recommend connecting more than two pairs of speakers without using some form of impedance correction.

The HDL-6includes impedance correction circuitry which protects your receiver or amplifier from low impedance loads. The circuitry assures that your receiver or amplifier will see a safe operating load, even when all six speaker pairs are playing at the same time.

TOOLS

REQUIRED

• 1/8" Standard

Slotted Screwdriver

• Wire Stripper

4

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

"TECH TIP"

Wire size is expressed by it's AWG (American Wire Gauge) number. The lower the AWG number, the larger the wire,

i.e., 12 AWG wire is physically larger

The actual impedance load the HDL-6presents 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 of8-ohmspeakers playing, theHDL-6will present a 4.3 ohm impedance load to your receiver/amplifier. With six pairs of4-ohmspeakers playing, the load drops to slightly under 4 ohms.

of

-

-

is that the wire has a specific "CL" fire rating, such as "CL-2"or"CL-3".Consult your Niles dealer, building contractor, or local building and inspection department if unsure about which type of wire is best for your application.

5

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS 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-6wiring near electrical devices, route the speaker wires several feet away from the electrical wiring.

Using the HDL-6withTube-TypeAmplifiers

Virtually all tube amplifiers must have a load connected at all times. If the amplifier to be connected to the HDL-6is a tube amplifier, be sure to always have at least one pair of speakers switched on at all times. An alternative is to permanently connect a 150 ohm, 5 watt resistor across the tube amplifier's output in parallel with theHDL-6.See(Figure 1) on next page for hookup diagram.

6

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

Tube Amplifier

Figure 1

Using a

Tube Amplifier

150 150

Niles HDL-6

 

AMPLIFIER

 

 

SPEAKER 6

 

 

SPEAKER 5

 

 

SPEAKER 4

 

 

SPEAKER 3

 

 

SPEAKER 2

 

 

SPEAKER 1

 

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

ON OFF

N I L E S

CONSTANT

Niles Audio

PROTECTION

Corporation, Inc.

 

Miami, Florida USA

 

 

 

 

 

 

 

7

H I G H

Recessed areas for custom room labels.

Attractive low-profiledesign.

Simple push-buttonoperation.

D E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

HDL-6HIGH DEFINITION SPEAKER SELECTION SYSTEM

 

 

 

 

 

 

 

 

 

 

 

PROTECTION

1

2

3

4

5

6

N I L E S

Connect up to six pairs

Protection switch safeguards your

of speakers.

receiver or amplifier even with all

 

6 pairs of speakers playing.

 

AMPLIFIER

 

 

SPEAKER 6

 

 

SPEAKER 5

 

 

SPEAKER 4

 

 

SPEAKER 3

 

 

SPEAKER 2

 

 

SPEAKER 1

 

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

L+

L-

R-

R+

ON OFF

N I L E S

CONSTANT

Niles Audio

PROTECTION

Corporation,

 

Miami, Florida USA

 

 

 

 

 

 

 

Constant

Two-piece

Impedance

removable

Protection

connectors.

Switch

 

8

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS 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

 

 

 

 

 

 

 

 

 

 

 

 

Figure 2

 

TUNER 94.9

 

 

 

 

Wiring Diagram

 

15

 

 

 

 

 

 

 

 

 

Niles HDL-6

 

 

 

 

AMPLIFIER

SPEAKER 6

SPEAKER 5

SPEAKER 4

SPEAKER 3

SPEAKER 2

SPEAKER 1

 

L+ L- R- R+

L+ L- R- R+

L+ L- R- R+

L+ L- R- R+

L+ L- R- R+

L+ L- R- R+

L+ L- R- R+

N I L E S

ON OFF

 

 

 

 

 

 

CONSTANT

 

 

 

 

 

 

Niles Audio

PROTECTION

 

 

 

 

 

 

Corporation, Inc.

 

 

 

 

 

 

 

Miami, Florida USA

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Speaker

Speaker

Speaker

Speaker

Speaker

Speaker

 

Pair 6

Pair 5

Pair 4

Pair 3

Pair 2

Pair 1

9

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

3.Make the connections to the HDL-6.The amplifier/speaker connectors on theHDL-6are removable. If you wish, you may remove theHDL-6'sconnectors 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 thespring-loadedconnector terminals. Be certain that proper phasing isobserved—connectthe positive terminals on theHDL-6to the positive terminals on the amplifier and speakers and the negative terminals on theHDL-6to the negative terminals on the amplifier and speakers.Re-installthe connectors if they were removed. See(Figure 4).

4.Locate the pre-printedRoom Labels. Affix the appropriate label to the recessed area over each ON/OFF selector button.

Figure 3

Removing the Connectors

Figure 4

Installing the Connectors

10

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

"TECH TIP"

If your amplifier or receiver has "A" and "B" speakerpair outputs, connect the HDL-6to the "A" outputs. Do not connect anything to "B". This will prevent the amplifier or receiver from driving an unusually low impedance load.

Operation

-

set

-

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 corresponding ON/OFF button on the HDL-6.

11

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

Playing Two or More Speaker Pairs Simultaneously

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'sfront panel is a button labeled PROTECTION. This button activates theHDL-6'simpedance correction circuitry. The circuitry assures that your receiver or amplifier will see a safe operating load when playing multiple speaker pairs simultaneously. Since most receivers and amplifiers are not rated for use below a 4 ohm load, 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.

"TECH TIP"

You will need to activate the HDL-6'sPROTECTION button whenever the overall system impedance might fall below

4 ohms.

When playing the following speakers:

The Protection

1 or 2 pair of 8-ohmspeakers

OFF

3 or more pairs of 8-ohmspeakers

ON

 

 

1 pair of 4-ohmspeakers

OFF

 

 

2 or more pairs of 4-ohmspeakers

ON

 

 

Any combination of 4 and 8 ohm speakers

ON

Set the PROTECTION button to the correct position using the chart

3. Locate the ON/OFF buttons on theHDL-6which correspond to the speaker pairs you wish to play. Set them to the ON position.

12

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS 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.

6.To turn off one or more speaker pairs, simply press the corresponding ON/OFF button(s) on the HDL-6.Refer to the Protection chart for the correct setting of the PROTECTION button.

Constant Protection Switch

The HDL-6is equipped with a manual override for the protection 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 accidental or improper use by anyone unfamiliar with the equipment.

To engage this override, move the rear panel "CONSTANT PROTECTION" switch to the "ON" position. Constant impedance protection will be maintained until the switch is turned to "OFF".

13

H I G HD E F I N I T I O NS P E A K E RS E L E C T I O NS Y S T E M

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.

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. If all the speaker pairs in your system are equipped with Niles volume controls, you can leave the amplifier or receiver volume set at one position and use the Niles controls exclusively.

SPECIFICATIONS

Audio Power Handling

250 watts/channel continuous music power

Frequency Response

+0 dB, -0dB (flat) from 20 Hz to 20 kHz

Mounting

Table-Topcomponent

Wiring Requirements

Individual runs of 2-conductorspeaker wire. Connectors accommodate wire sizes14-22gauge (16 gauge recommended)

Overall Dimensions

17" wide x 2" high x 8-3/4"deep

Weight

4 3/4 lb.

14

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. Printed in USA 4/96 DS00100A