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MODEL
SVL-4AB
SVL-4AB
SVL-4AB
SPEAKER SELECTION/VOLUME CONTROL SYSTEM
WITH A/B AMPLIFIER INPUTS
INSTALLATION & OPERATION GUIDE
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S PEAKER S E LE C TION /V OLUME C ONTR OL S Y S TEM SVL-4AB Speaker Selection/ Volume Control System with A/B Amplifier Inputs TABLE OF CONTENTS Introduction The SVL-4AB is a combination speaker selector and volume Introduction 1 controller. The unit allows you to connect up to four pairs of speakers to your stereo receiver or amplifier and adjust the Features and volume of each pair independently. You can choose to listen Benefits 2 to any one pair, any combination of pairs, or all pai
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM Features and Benefits The SVL-4AB offers a number of improvements over other speaker selector/volume controllers: l Amplifier A/B Switching—The SVL-4AB provides amplifier switching for each pair of speakers. The switches are TECH SUPPORT “break-before-make“ and simultaneously switch both HOTLINE grounds and hots. This allows any two amplifiers to safely and reliably operate simultaneously. If you have questions regarding l The SVL-4AB uses 12-p
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM l Rear panel switches for constant or selectable impedance protection for each amplifier. You can use constant protec- tion on one of your two amplifiers and manual protection for the other. l Self-cleaning, silver-plated switch contacts assure many years of trouble free use. l Printed circuit board design assures high reliability. l Two-piece removable connectors greatly simplify installa- tion and hookup. All wiring can be attached directly to
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM Installation Considerations SVL-4AB Power Handling TOOLS The SVL-4AB is designed for use with receivers or amplifiers REQUIRED having a maximum power output of 100 watts per channel at • 1/8" Standard 8 ohms. Damage caused by the use of higher-power receivers Slotted Screwdriver or amplifiers will void the warranty. Consult your Niles dealer or receiver/amplifier manufacturer if you are uncertain about • Wire Stripper the power rating of your re
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM The SVL-4AB includes impedance correction circuitry which protects each of your receivers or amplifiers from low imped- ance loads. The circuitry assures that both of your receivers or amplifiers will recognize a safe operating load, even when one amplifier is playing all four speaker pairs at the same time. The actual impedance load the SVL-4AB presents to each of your receivers or amplifiers will vary, depending on how many speaker pairs are p
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM may not fit into the connectors. Never use solid-core, alu- minum, or "Romex" type wire with the SVL-4AB. When run- ning 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". Consult your Niles dealer, building contractor, or local building and inspection department if uns
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM Tube Amplifier Figure 1 Using a Tube Amplifier 150Ω 5 Watt Resistor 150 150 Niles SVL-4AB AMPLIFIER 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+ ON OFF CONSTANT PROTECTION Niles Audio Corporation, Miami, Florida USA 7
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM Recessed areas for 12 position volume control provides Attractive custom room greater attenuation than conven- low-profile labels. tional 10 position designs. design. SVL-4AB SPEAKER SELECTION/VOLUME CONTROL SYSTEM A OFF A OFF A OFF A OFF PROTECTION B ON B ON B ON B ON SPEAKER 1 SPEAKER 2 SPEAKER 3 SPEAKER 4 Each speaker pair can individu- Each speaker pair is independently Protection switch safeguards both activated with a simple pushbutton of
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM Installation 1. Select a convenient location for the SVL-4AB. 2. Run all the necessary wiring to the SVL-4AB. Label the wires for future reference. See (Figure 2). Figure 2 Wiring Diagram TUNER 94.9 15 Receiver A AMPLIFIER 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+ ON OFF CONSTANT PROTECTION Niles Audio Corporation, Miami, Florida USA Niles SVL-4AB Speaker Speaker Speaker Speaker Pair
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM 3. Make the connections to the SVL-4AB. The amplifier/speaker connectors on the SVL-4AB are removable. If you wish, you may remove the SVL-4AB's connectors 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 the connector terminals. Be certain that proper “phasing” is observed. To achieve p
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM Operation The are two ways to use the SVL-4AB. You may play and "TECH TIP" adjust the volume of one pair of speakers at a time, or play multiple pairs simultaneously. If your amplifier or receiver has "A" If you intend to play more than one pair of speakers at the and "B" speaker- same time, you will need to become familiar with the opera- pair outputs, tion of the SVL-4AB's PROTECTION button. connect the SVL-4AB to the "A" outputs. Playing
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM not to overdrive or "clip" your amplifier. If the sound "TECH TIP" becomes muddy or distorted, you have reached the limit of your amplifier's volume capability and should quickly reduce You will need to the volume to avoid damaging your speakers. activate the SVL- 4AB's PROTECTION 7. Using the appropriate volume control on the front of the button whenever the SVL-4AB, adjust the volume of the speakers to the desired lis- overall system tening l
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM When playing the following speakers: The Protection button should be: 1 or 2 pair of 8-ohm speakers OFF 3 or 4 pairs of 8-ohm speakers ON 1 pair of 4-ohm speakers OFF 2, 3, or 4 pairs of 4-ohm speakers ON Any combination of 4 and 8 ohm speakers ON Set the PROTECTION button to the correct position using the chart shown above. 3. Set the SVL-4AB volume controls which correspond to the "TECH TIP" speaker pairs you wish to play to maximum (fully clo
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S PEAKER S ELE C TION /V OLUME C ONTR OL S Y S TEM 9. You can turn off the speakers by turning the correspond- SPECIFICATIONS ing volume controls on the SVL-4AB fully counter-clockwise, Audio Power or by pressing the appropriate ON/OFF button. Refer to the Handling Protection Chart located on page 13 for the correct setting of 100 watts/channel the PROTECTION button. continuous music power 10. At any time, you may choose to switch any of the active Frequency Response speaker pairs to one or th
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Niles Audio Corporation www.nilesaudio.com 12331 S.W. 130 Street Miami, Florida, 33186 Tel: (305) 238-4373 ©1999 Niles Audio Corporation All rights reserved. Because Niles believes in constantly improving its Fax: (305) 238-0185 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 1/99 DS00127A
