A 4173A
PA Amplifier Stereo/Bridgeable 2x550W
Rear Panel
1. CH-A/CH-B input XLR
Standard XLR jack, below is the input method
Pin1: signal ground, Pin2: , Pin3: signal-
2. CH-A/CH-B Signal Link Output
Standard XLR (male) socket for input signal link, its Pins are parallel
connected with the female XLR socket so you can feed the same signal to
another amplifier. Pin1: signal ground, Pin2: , Pin3: signal-
3. CH-A/CH-B Output Mode Set Switch
Select the run mode as STEREO, BRIDGE or PARALLEL
4. CH-A/CH-B Output SPEAKON
Standard speakon socket 1+2+: 1-2-:
5. Mains Power Supply Cord
• Rugged heavy duty construction
• 19” rack mount
• Bridgeable, parallel or two channel stereo operation
• Earth lift switch
• 3 pin XLR and 6.35mm inputs.
• Short circuit protection with indicator
• Overload protection with indicator
• Clipping prevention circuitry with indicator
• Variable speed fan forced cooling
• Muting circuit for switch on/off
Features
5
4
4
1
1
3
2
1
