Instruction/ maintenance manual of the product SPS-4 Niles Audio
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SPS - 4 INSTALLATION & OPERA TION GUIDE N I LES ® MODEL SPS-4 SPEAKER SEL ECTION SYSTEM SPS - 4.
Introduction The SPS-4 allows you to connect up to four pairs of speakers to your stereo receiver or amplifier and play any pair, any combination of pairs, or all pairs simultaneously.
Features and Benefits The SPS-4 offers a number of improvements over other speaker selectors: ● Pre-printed Room Labels are included for easy identification of speaker ON/OFF buttons. ● Isolated left and right channel ground returns make the SPS-4 compatible with all types of amplifiers.
● May be used with 4, 6, or 8-ohm speaker systems. ● Ideal for both home and commercial sound installations. ● Only a wire stripper is required for installation. ● Power handling: 1 00 watts/channel continuous music power. ● Frequency response: Flat ( + 0 dB, - 0 dB) from 20 Hz to 20 kHz.
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 8 ohms. Damage caused by the use of a higher-power receiver or amplifier will void the warranty.
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 SPS-4 presents to your receiv- er or amplifier will vary, depending on how many speaker pairs are playing and the impedance rating of each speaker.
wires inside walls, most states and municipalities in the U.S. specify that you must use a special type of speaker wire. Usually, the requirement is that the wire has a specific "CL" fire rating, such as "CL-2" or "CL-3".
7 S PEAKER S ELECTION S YSTEM Figure 1 Using a Tube Amplifier Tube Amplifier Niles SPS-4 15 0 15 0 SPEAKER 2 SPEAKER 1 SPEAKER 3 SPEAKER 4 LR AMPLI FIE R LR LR ++ -- ++ -- LR LR ++ -- Niles Audio Corporat ion, Inc.
8 S PEAKER S ELECTION S YSTEM SPS-4 SPEAK ER SE L EC TION S YSTEM PROTECT ION 13 24 NI LES SPEAKER 2 SPEAKER 1 SPEAKER 3 SPEAKER 4 LR AMPLIFIER LR LR ++ -- ++ -- LR LR ++ -- Niles Audio Corporat ion, Inc. Miami, Flori da USA NI LES Recessed areas for custom room labels.
Installation 1. Select a convenient mounting location for the SPS-4. 2. Run all the necessary wiring to the SPS-4. Label the wires for future reference. See (Figure 2). 9 S PEAKER S ELECTION S YSTEM TUNER 94.9 15 SPEAKER 2 SPEAKER 1 SPEAKER 3 SPEAKER 4 LR AMPLIFIER LR LR ++ -- ++ -- LR LR ++ -- Niles Audio Corporat ion, Inc.
3. Make the connections to the SPS-4. Strip 3/8" of insulation from the end of each wire. Tightly twist the end of each wire until there are no frayed ends.
Operation There are two ways to use the SPS-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 SPS-4's PROTECTION button.
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 SPS-4's front panel is a button labeled PROTECTION. This button activates the SPS-4's imped- ance correction circuitry.
3. Locate the ON/OFF buttons on the SPS-4 which corre- spond to the speaker pairs you wish to play. Set them to the ON position. 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.
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.
Niles Audio Corporation www.nilesaudio.com 1 2331 S. W . 1 30 Street Miami, Florida 33 1 86 T el: (305) 238-43 73 Fax: (305) 238-0 1 85 ® NIL E S ® © 1 999 Niles Audio Corporation.
An important point after buying a device Niles Audio SPS-4 (or even before the purchase) is to read its user manual. We should do this for several simple reasons:
If you have not bought Niles Audio SPS-4 yet, this is a good time to familiarize yourself with the basic data on the product. First of all view first pages of the manual, you can find above. You should find there the most important technical data Niles Audio SPS-4 - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Niles Audio SPS-4 you will learn all the available features of the product, as well as information on its operation. The information that you get Niles Audio SPS-4 will certainly help you make a decision on the purchase.
If you already are a holder of Niles Audio SPS-4, but have not read the manual yet, you should do it for the reasons described above. You will learn then if you properly used the available features, and whether you have not made any mistakes, which can shorten the lifetime Niles Audio SPS-4.
However, one of the most important roles played by the user manual is to help in solving problems with Niles Audio SPS-4. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Niles Audio SPS-4 along with tips on how to solve them. Even if you fail to solve the problem, the manual will show you a further procedure – contact to the customer service center or the nearest service center
