Niles Audio
Corporation
www.nilesaudio.com
12331 S.W. 130 Street
Miami, Florida 33186
Tel: (305) 238-4373
Fax: (305) 238-0185
©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
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
HPS-4/HPS-6
HIGH POWER SPEAKER SELECTION SYSTEM
B L E N D I N G H I G H F I D E L I T Y A N D A R C H I T E C T U R E ®
H I G H P O W E R S P E A K E R S E L E C T I O N S Y S T E M
HPS-4/
HPS-6
High Power
Speaker Selector
System
TABLE OF CONTENTS |
Introduction |
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Introduction |
1 |
The HPS series allows you to connect multiple pairs of speak- |
ers to your stereo receiver or amplifier and play any one pair, |
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any combination of pairs, or all pairs at once. You don't have |
Features and |
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to worry about overloading your amplifier. The HPS-4 and |
Benefits |
2 |
HPS-6 have a protection circuit that keeps your amplifier run- |
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ning safely, even if you have all pairs of speakers playing at |
Installation |
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the same time. |
Considerations 3 |
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Installation |
5 |
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Operation |
6 |
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Specifications |
14 |
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H I G H P O W E R S P E A K E R S E L E C T I O N S Y S T E M
Balancing Speaker
The volume control on
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 I G H P O W E R S P E A K E R S E L E C T I O N S Y S T E M
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 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 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
H I G H P O W E R S P E A K E R S E L E C T I O N
3.Locate the on/off buttons on the HPS-4/HPS-6 which respond to the speaker pairs you wish to play. Set the ON position (Engaged).
4.Turn on the amplifier or receiver and select a source, as the tuner or CD player.
5.Slowly turn up the amplifier or receiver volume and to a comfortable (not maximum) listening level. Be not to overdrive or “clip” your amplifier. If the becomes muddy or distorted, you have reached the of your amplifier’s volume capability and should reduce the volume to avoid damaging your speakers.
S Y S T E M
“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.
When playing the following speakers: |
The Protection button should be: |
1 or 2 pairs of 8-ohm speakers |
OFF |
3 or more pairs of 8-ohm speakers |
ON |
1 pair of 4-ohm speakers |
OFF |
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2 or more pairs of 4-ohm speakers |
ON |
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Any combination of 4 and 8 ohm speakers |
ON |
Set the PROTECTION button to the correct position using the chart shown above.
3 |
12 |