Connections
If your amplifier or receiver
has "A" and "B" speaker pair
outputs, connect the SPS-6 to
the "A" points. Do not con-
nect anything to "B". This
will prevent the amplifier or
receiver from driving an
unusually low impedance
load.
Using the SPS-6 with Tube
Type Amplifiers
Virtually all tube amplifiers
must have a load connected
at all times. If the amplifier to
be connected to the SPS-6 is
a tube amplifier, be sure to
always have at least one pair
of speakers switched on at all
times. An alternative is to per-
manently connect a 150 ohm,
5 watt resistor across the tube
amplifier's output in parallel
with the SPS-6.
Impedance Matching
You will need to activate the
SPS-6's PROTECTION button
whenever the overall system
impedance might fall below
4 ohms.
TUNER 94.9
15
SPEAKER 2
SPEAKER 1
SPEAKER 4
SPEAKER 3
SPEAKER 5
SPEAKER 6
L
R
AMPLIFIER
L
R
L
R
+
+
+
+
--
--
+
+
+
+
--
--
L
R
L
R
+
+
+
+
--
--
L
R
L
R
+
+
+
+
--
--
Niles Audio
Corporation, Inc.
Miami, Florida USA
NILES
150
150
SPEAKER 2
SPEAKER 1
SPEAKER 4
SPEAKER 3
SPEAKER 5
SPEAKER 6
L
R
AMPLIFIER
L
R
L
R
+
+
+
+
--
--
+
+
+
+
--
--
L
R
L
R
+
+
+
+
--
--
L
R
L
R
+
+
+
+
--
--
Niles Audio
Corporation, Inc.
Miami, Florida USA
NILES
TOOLS REQUIRED
• 1/8" Standard Slotted
Screwdriver
• Wire Stripper
MODEL SPS-6 Speaker Selection System (continued)
NILES AUDIO CORPORATION
12331 S.W. 130 STREET MIAMI, FLORIDA 33186
TEL: (305) 238-4373 FAX: (305) 238-0185 INTERNET: www.nilesaudio.com
© 1999 Niles Audio Corporation. Niles, the Niles logo and Blending High Fidelity and Architecture are registered trademarks of Niles Audio Corporation. Printed in USA DS00098A
Connections
Receiver
Speaker Pairs
Protecting a Tube Amplifier
Tube Amplifier
150 ohm, 5 watt Resistors
APPLICATION NOTES
APPLICATION NOTES
When playing the following speakers:
1 or 2 pair of 8-ohm speakers
3 or more pairs of 8-ohm speakers
1 pair of 4-ohm speaker
2, or more pairs of 4-ohm speakers
Any combination of 4 and 8 ohm speakers
The Protection button should be:
OFF
ON
OFF
ON
ON
CEDIA
CUSTOM
ELECTRONIC
DESIGN &
INSTALLATION
ASSOCIATION
CHARTER MEMBER
