6
SR 2-125 TWO-CHANNEL AMPLIFIER INSTRUCTION MANUAL
Powering the Amplifier
The SR 2-125 features a removable
IEC power connector (Figure 6).
A 14-gauge EIA standard 120-volt
grounded power cable is included with
the amplifier.
Each time the amplifier’s power
cord is initially plugged in and the
POWER switch is turned ON, all
channel outputs are disconnected
for approximately 9-12 seconds and all
PROTECTION LEDs will illuminate briefly
while the amp boots up.
IMPORTANT: DO NOT PLUG THE POWER CORD INTO THE WALL
OUTLET UNTIL ALL SYSTEM CONNECTIONS HAVE BEEN MADE
AND VERIFIED.
Plug the female end of the power cable into the Power Connector
on the amplifier’s rear panel and plug the male end directly into a
grounded 15 amp or 20 amp wall outlet.
IMPORTANT: DO NOT PLUG THE AMPLIFIER’S POWER CORD
INTO A CONVENIENCE OUTLET ON ANY OTHER AUDIO OR
VIDEO COMPONENT.
If the electrical service is subject to frequent sags, spikes, or
brownouts, a power conditioner designed for use with high fidelity
equipment should be employed to protect the amplifier.
CAUTION: FOR CONTINUED PROTECTION AGAINST FIRE,
REPLACE THE FUSE WITH ONLY THE SAME TYPE AND RATING.
Source Connections/Selection SR 2-125
There are two options when connecting audio inputs to the
SR 2-125 amplifier (see Figure 8):
Primary Line Inputs 1-L, 1-R - Use these inputs for analog
audio source.
Primary Line Coax Inputs L&R - Use these inputs for
coax audio source.
Primary Line Toslink Inputs L&R - Use these inputs for
toslink audio source.
Amplifiers Power Requirements: 15 AMP Breaker 20 AMP Breaker
Model Input Voltage Output Power (sinewave) Draw Watts Qty of Amplifiers Qty of Amplifiers
SR 2-125 100-120V AC Full Power All Channels @ 8 ohms 311.5 4 6
Full Power All Channels @ 4 ohms 326 4 5
1/8 Power All Channels @ 8 ohms 61.5 23 31
1/8 Power All Channels @ 4 ohms 63 22 30
@ Idle 26.5
@ Standby 0.3
13 AMP Breaker 20 AMP Breaker
Model Input Voltage Output Power (sinewave) Draw Watts Qty of Amplifiers Qty of Amplifiers
SR 2-125 220-240V AC Full Power All Channels @ 8 ohms 300 4 6
Full Power All Channels @ 4 ohms 314.5 4 6
1/8 Power All Channels @ 8 ohms 58.5 24 32
1/8 Power All Channels @ 4 ohms 60 24 32
@ Idle 24
@ Standby 0.48
FIGURE 8: SR 2-125 LEFT, RIGHT LINE INPUTS
FIGURE 7: SR 2-125 TWO-CHANNEL AMPLIFIER POWER REQUIREMENTS
AC 100-120V ~ 60Hz
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