Instruction/ maintenance manual of the product SVL-4AB Niles Audio
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SV L- 4AB INST ALLA TION & OPERA TION GUIDE MODEL S VL - 4AB SPEAKER SEL E CTION /VOLUME CONTROL SYSTEM WITH A/B AMPLIFIER INPUTS SV L- 4AB.
Introduction The SVL-4AB is a combination speaker selector and vol ume controller . The unit allows you to connect up to four pairs of speakers to your stereo receiver or amplifier and adjust the volume of each pair independently . Y ou can choose to listen to any one pair , any combination of pairs, or all pairs at once.
Features and Benefits The SVL-4AB offers a number of improvements over other speaker selector/volume controllers: ● Amplifier A/B Switching— The SVL-4AB pr ovides amplifier switching for each pair of speakers. The switches are “break-before-make“ and simultaneously switch both grounds and hots.
● Rear panel switches for constant or selectable impedance protection for each amplifier . Y ou can use constant protec- tion on one of your two amplifiers and manual protection for the other . ● Self-cleaning, silver-plated switch contacts assure many years of trouble free use.
Installation Considerations SVL-4AB Power Handling The SVL-4AB is designed for use with receivers or amplifiers having a maximum power output of 1 00 watts per channel at 8 ohms. Damage caused by the use of higher-power receivers or amplifiers will void the warranty .
The SVL-4AB includes impedance correction cir cuitr y which protects each of your receivers or amplifiers fr om 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.
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.
7 S PEAKER S ELEC TION /V OLUME C ONTR OL S YS TEM Figure 1 Using a T ube Amplifier T ube Amplifier Niles SVL-4AB 15 0 15 0 AMPLIFIER L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ L+ L- R- R+ SPEAKE.
8 S PEAKER S ELEC TION /V OLUME C ONTR OL S YS TEM SVL-4AB SPEAKER S ELECTION/VO LUME C ONTROL SY STEM SPEAKER 1 A B OFF ON OFF ON OFF ON OFF ON SPEAKER 2 A B SPEAKER 3 A B SPEAKER 4 A B PROTECTION AM.
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) .
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.
Operation The are two ways to use the SVL-4AB. Y ou may play and adjust the volume of 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 SVL-4AB's PROTECTION button.
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.
S PEAKER S ELEC TION /V OLUME C ONTR OL S YS TEM 13 3. Set the SVL-4AB volume controls which cor respond to the speaker pairs you wish to play to maximum (fully clockwise). 4. Locate the appropriate ON/OFF buttons on the SVL-4AB. Set them to the ON position.
S PEAKER S ELEC TION /V OLUME C ONTR OL S YS TEM 14 9. Y ou can turn off the speakers by turning the correspond- ing volume controls on the SVL- 4AB fully counter-clockwise, or by pressing the appropriate ON/OFF button. Refer to the Protection Chart located on page 13 for the correct setting of the PROTECTION button.
Nil es Audi o Corporation www .nilesaudio.com 1 233 1 S.W. 1 30 Street Miami, Florida, 33 186 T el: (305) 238-4373 Fax: (305) 238-0 1 85 © 1 999 Niles Audio Corporation All rights reserved. Because Niles believes in constantly improving its products, Niles reserves the right to change product specifications without notice.
An important point after buying a device Niles Audio SVL-4AB (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 SVL-4AB 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 SVL-4AB - thus you can check whether the hardware meets your expectations. When delving into next pages of the user manual, Niles Audio SVL-4AB you will learn all the available features of the product, as well as information on its operation. The information that you get Niles Audio SVL-4AB will certainly help you make a decision on the purchase.
If you already are a holder of Niles Audio SVL-4AB, 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 SVL-4AB.
However, one of the most important roles played by the user manual is to help in solving problems with Niles Audio SVL-4AB. Almost always you will find there Troubleshooting, which are the most frequently occurring failures and malfunctions of the device Niles Audio SVL-4AB 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
