Niles Audio HPS-4, HPS-6 User Manual

Niles Audio

Corporation

www.nilesaudio.com

12331 S.W. 130 Street

Miami, Florida 33186

Tel: [phone]

Fax: [phone]

©2004 Niles Audio Corporation. All rights reserved. Niles, the Niles logo and Blending High Fidelity and
Architecture are registered trademarks of Niles Audio Corporation. Because we strive to improve our products,
Niles reserves the right to change product specifications without notice. The technical and other information
contained herein is not intended to set forth all technical and other specifications of Niles products. Additional
information can be obtained on-line at www.nilesaudio.com or by calling Niles at 1-800-289-4434. Printed in
China 1/04 DS00358ACN

INSTALLATION & OPERATION GUIDE

HPS-4/HPS-6

HPS-4/HPS-6

HIGH POWER SPEAKER SELECTION SYSTEM

B LENDING H IGH F IDELITY AND A RCHITECTURE

®

H

IGHPO WERSPEAKERSELECTIONSYSTEM

HPS-4/
HPS-6

High Power
Speaker Selector
System

TABLE OF CONTENTS

Introduction 1

Features and
Benefits 2

Installation
Considerations 3

Installation 5

Operation 6

Specifications 14

Introduction

The HPS series allows you to connect multiple 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. The HPS-4 and
HPS-6 have a protection circuit that keeps your amplifier run­ning safely, even if you have all pairs of speakers playing at
the same time.

H

IGHPOWERSPEAKERSELECTIONSYSTEM

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, -0 dB (flat) from

20 Hz to 20 kHz

Mounting

Table-Top component

Wiring
Requirements

Individual runs of
2-conductor speaker
wire. Connectors
accommodate wire
sizes 14-22 gauge (16
gauge recommended)

Overall Dimensions

17" wide x 2" high x

8-3/4" deep

Weight

4-1/2 lb.

14

H

IGHPOWERSPEAKERSELECTIONSYSTEM

H

IGHPOWERSPEAKERSELECTIONSYSTEM

Installation Considerations

Power Handling

The HPS series 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.

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-ohm speakers are connected in

3. Locate the on/off buttons on the HPS-4/HPS-6 which cor­respond to the speaker pairs you wish to play. Set them to
the ON position (Engaged).

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.

“TECH TIP”

You will need

to activate the

HPS-4/HPS-6’s

protection button

whenever the overall

system impedance

might fall below

4 ohms.

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 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 HPS series includes 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 four speaker pairs
are playing at the same time.

The actual impedance load the speaker selector presents to

When playing the following speakers:

1 or 2 pairs of 8-ohm speakers

3 or more pairs of 8-ohm speakers

1 pair of 4-ohm speakers

2 or more pairs of 4-ohm speakers

Any combination of 4 and 8 ohm speakers

Set the PROTECTION button to the correct position using the chart shown above.

The Protection button should be:

OFF

ON

OFF

ON

ON

your receiver or amplifier will vary, depending on how many
speaker pairs are playing, and the impedance rating of each
speaker. If you have four pairs of 8-ohm speakers playing, the
HPS-4/HPS-6 series will present a 4.5 ohm impedance load to

3

12