7
S
P E A K E R
S
E L E C T I O N
/ V
O L U M E
C
O N T R O L
S
Y S T E M
Figure 1
Using a
Tube Amplifier
Tube Amplifier
Niles SVL-4AB
150
150
AMPLIFIER
L+
L-
R-
R+
L+
L-
R-
R+
L+
L-
R-
R+
L+
L-
R-
R+
L+
L-
R-
R+
SPEAKER 4
SPEAKER 3
SPEAKER 2
SPEAKER 1
CONSTANT
PROTECTION
ON OFF
Niles Audio
Corporation,
Miami, Florida USA
150
Ω
5 Watt Resistor
