Niles SPS-4 - Manuals - manualsarea.com

Page 2 - TABLE OF CONTENTS; Introduction

Introduction The SPS-4 allows you to connect up to four pairs of speakersto your stereo receiver or amplifier and play any pair, anycombination of pairs, or all pairs simultaneously. You don'thave to worry about overloading your amplifier. The SPS-4has a protection circuit that keeps your amplifier ...

Page 3 - Features and Benefits; Printed circuit board design assures high reliability.; TECH

Features and Benefits The SPS-4 offers a number of improvements over otherspeaker selectors: ● Pre-printed Room Labels are included for easy identificationof speaker ON/OFF buttons. ● Isolated left and right channel ground returns make theSPS-4 compatible with all types of amplifiers. ● Self-cleanin...

Page 5 - Installation Considerations; Amplifier Impedance Load; TOOLS; • Wire Stripper

Installation Considerations SPS-4 Power Handling The SPS-4 is designed for use with a receiver or amplifier hav-ing a maximum power output of 100 watts per channel at 8ohms. Damage caused by the use of a higher-power receiveror amplifier will void the warranty. Niles speaker selectorswith higher pow...

Page 6 - Type of Speaker Wire; Wire size is

The circuitry assures that your receiver or amplifier will see asafe operating load, even when all four speaker pairs areplaying at the same time. The actual impedance load the SPS-4 presents to your receiv-er or amplifier will vary, depending on how many speakerpairs are playing and the impedance r...

Page 8 - Figure 1; Using a

7 S P E A K E R S E L E C T I O N S Y S T E M Figure 1 Using a Tube Amplifier Tube Amplifier Niles SPS-4 150 150 SPE AKER 2 SPE AKER 1 SPE AKER 3 SPE AKER 4 L R AMPLIFIER L R L R + + - - + + - - L R L R + + - - Niles Audio Corporation, Inc. Miami, Florida USA NILES

Page 10 - Installation; Figure 2

Installation 1. Select a convenient mounting location for the SPS-4. 2. Run all the necessary wiring to the SPS-4. Label the wiresfor future reference. See (Figure 2). 9 S P E A K E R S E L E C T I O N S Y S T E M TUNER 94.9 15 SPE AKER 2 SPE AKER 1 SPE AKER 3 SPE AKER 4 L R AMPLIFIER L R L R + + - ...

Page 11 - Figure 3; Connecting the

3. Make the connections to the SPS-4. Strip 3/8" of insulationfrom the end of each wire. Tightly twist the end of each wire until there are no frayed ends. Insert each wire into theappropriate hole on the spring-loaded connector terminals.Be certain that proper phasing is observed — connect thep...

Page 12 - Operation; Playing One Pair of Speakers At a Time; If your amplifier or

Operation There are two ways to use the SPS-4. You may play one pairof speakers at a time, or play multiple pairs simultaneously. If you intend to play more than one pair of speakers at thesame time, you will need to become familiar with the opera-tion of the SPS-4's PROTECTION button. Playing One P...

Page 13 - Playing Two or More Speaker Pairs Simultaneously; When playing the following speakers:; or 2 pair of 8-ohm speakers; The Protection button should be:; You will need to

Playing Two or More Speaker Pairs Simultaneously 1. Make sure the amplifier or receiver power is OFF and setthe volume to minimum. 2. On the right side of the SPS-4's front panel is a buttonlabeled PROTECTION. This button activates the SPS-4's imped-ance correction circuitry. The circuitry assures t...

Page 15 - Balancing Speaker Volume; SPECIFICATIONS

Balancing Speaker Volume The volume control on your receiver or amplifier serves asthe "master" volume for all speaker pairs connected. The volume level of the speakers may vary from room toroom. This is caused by several factors. Two lesser factors arethe size of the speaker and its efficie...