Niles Audio SVL-2 User Manual
SVL- 2
INSTALLATION & OPERATION GUIDE
NILES
®
MODEL
SVL- 2
SPEAKER SELECTION/VOLUME CONTROL SYSTEM
SVL- 2
Introduction
The SVL-2 is a combination speaker selector and volume controller. It allows you to connect two pairs of speakers to your
stereo receiver or amplifier and adjust the volume of each
pair independently. Additionally, you can choose to listen to
either pair of speakers, or both pairs simultaneously. You
don't have to worry about overloading your amplifier. The
SVL-2 has a protection circuit that keeps your amplifier running safely, even with both pairs of speakers playing.
A perfect application for the SVL-2 is individually controlling
speaker "ON/OFF" and volume adjustment for two pairs of
speakers: one pair in the room with the main stereo system
and another pair at a remote location. The SVL-2 adjusts the
volume of the speakers connected to it by attenuating the
amplifier signal. Niles volume controls use autoformers
instead of L-pads for the volume controlling element. This
assures minimal internal power dissipation with virtually no
power wasted as heat.
TABLE OF CONTENTS
Introduction 1
Features and
Benefits 2
Installation
Considerations 4
Installation 8
Operation 10
Specifications 14
S
PEAKERSE LECTION
/V
OLUMECONTROLSYSTEM
SVL-2
Speaker Selection/
Volume C ontrol
System
1
Features and Benefits
The SVL-2 offers a number of improvements over other
speaker selector/volume controllers:
● The SVL-2 uses 12 position volume controls which are
superior to 10 position designs. You get a broader range of
adjustment—there are 10 steps of attenuation instead of 8.
Steps 11-6 attenuate -3 dB per step; steps 5-2 are 6 dB per
step. Step 1 2 is "full-on" and step 1 is "full-off".
● Greater dynamic range —you get 42 dB of total attenua-
tion instead of the usual 20 or 30 dB.
● POP-FREE switching between all steps.
● Pre-printed Room Labels are included for easy identification
of speaker ON/OFF buttons.
● Isolated right and left channel ground returns make the
SVL-2 compatible with all types of amplifiers.
● Self-cleaning, silver-plated switch contacts assure many
years of trouble free use.
● Printed circuit board design assures high reliability.
2
S
PEAKERSELECTION
/V
OLUMECONTROLSYSTEM
TECH
SUPPORT
HOTLINE
If you have
questions regarding
the operation of the
Niles SVL-2, contact
your local Niles
dealer or Niles
Customer Service at
1-800-289-4434.
● Spring-loaded push terminal connectors accommodate up
to 14 gauge wire or "pins", making the SVL-2 compatible
with most "high-definition" speaker cables.
● 100% tested, electronically and acoustically, for frequency
response, distortion and power handling.
● Only 8 1/2" wide. Match the width of 17" components by
combining with another Niles 1/2 width product.
● 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: 100 watts/channel continuous music
power.
● Frequency response: 20 Hz to 20 kHz +/-1.2 dB.
● Ten year parts and labor warranty.
● Proudly made in the USA.
3
S
PEAKERSELECTION
/V
OLUMECONTROLSYSTEM
Installation Considerations
SVL-2 Power Handling
The SVL-2 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. Consult your Niles dealer,
or receiver/amplifier manufacturer, if you are uncertain about
the power rating of your receiver or amplifier.
IMPORTANT: DO NOT USE THE SVL-2 WITH AMPS OR
RECEIVERS RATED AT MORE THAN 100 WATTS PER
CHANNEL RMS AT 8 OHMS.
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 two pairs of 4-ohm speakers without using some form of
impedance correction.
4
S
PEAKERSELECTION
/V
OLUMECONTROLSYSTEM
IMPORTANT
DO NOT use the
SVL-2 with amps
or receivers rated
at more than 100
watts per channel
RMS at 8 ohms.
TOOLS
REQUIRED
• Wire Stripper
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