SI-125 Power Amplifier Manual
8
Specifications
Characteristics:
SI-125 Power Amplifier
Input Level
1 V or 100 mV (switchable)
Input Impedance
10 k
Ω
(balanced)
Output
125 watts RMS into balanced 4
Ω
, 8
Ω
, 25 V or 70 V line
Frequency Response
50 to 15000 Hz (± 2 dB)
Total Harmonic Distortion
0.05% @ 1 kHz rated output
Output Regulation (with
Transformer)
< 1 dB, no load to full load
Signal to Noise Ratio
(Band Pass 20 to 20000 Hz)
Input Level switch in 0 dBv (1 V) position: > 94 dB
Connectors
Screw-Barrier Terminals on input and output.
Mas-Con connectors are used with optional modules
Controls
Power Switch (Illuminated), GAIN Control, Low Cut Switch, Input
Level Switch (1 V / 100 mV)
Indicators
Clip, High Temperature, VU Meter and Current Overload
Protection
Foldback current limiting, Over-temperature protection, Primary
circuit fused at 3.5 A
Temperature Range
-10
°
C to +35
°
C (14
°
F to 95
°
F)
Power Consumption
AC 120 V, 60 Hz, 270 W
Weight
11.8 kg (26 lbs.)
Dimensions
(without amplifier handles)
5 ¼" H x 19” W x 12
⅛
" D
Finish
Black Powder Coating
Optional Modules
PA-AM Power Amplifier Attenuator Module
PA-MM Power Amplifier Monitor Module
PA-PM Power Amplifier Paging Module
Specifications are subject to change without notice.
