The SBA-379 Stereo Balancing Amplifier, which comes in 2 versions, is an economical way to convert two unbalanced audio inputs to balanced outputs. The SBA-379 retains stereo separation with individual L/R gain, while the SBA-379-M model sums the stereo pair to mono and provides two balanced outputs with individual gain controls. Originally designed for the cable TV industry, the mono version eliminates the distortion, unpredictable frequency response and potential equipment damage that can result when a Y-cable is used to sum two outputs. Conventional dual input connectors provide both RCA and screw terminals. The SBA-379 is built into a rugged diecast aluminium box. Power is provided via a 24 VDC CSA/UL approved adapter.
Specifications
Input Connections:
RCA or screw terminal
Frequency response:
(@+4dB output into 600ohms)
20Hz – 20kHz +0, -1dB
15Hz – 50kHz +0.5, -3dB
Maximum Output:
+22dBm at 1kHz into 600ohm balanced load
Gain range:
Off to +32dB
Residual noise:
-70dBu gain full
Crosstalk:
-85dB
Dimensions:
4.5″L x 2.4″W x 1.25″D
Power supply:
24 VDC CSA/UL approved adapter (included) or ±12 VDC to ±17 VDC bipolar supply.
Option:
Sum stereo input to mono (model SBA – 379 – M)
Click here for wiring diagram