Manual
SPECIFICATIONS 
Audio Input: 
Connectors:  3-pin female XLR,  electronically  balanced and RF  filtered 
Impedance:  20K Ohms balanced,  10K  Ohms unbalanced 
Max Input Level:  +8dBv 
Thru Output: 
Connectors:  3-pin male XLR,  parallel  with Audio Input 
Logic Input: 
Connectors:  Terminal Strip 
Impedance:  100K Ohms in  parallel  with 2.2uF pulled  up to +5  volts 
Speaker Output: 
Connectors:  Terminal Strip 
Load Impedance:  4 Ohms or  greater 
Protection:  Short circuit 
Open circuit 
Thermal 
Excessively reactive load 
THD (20Hz-20KHz):  Less than .25%  @  5 watts, 4  Ohms (80KHz filter) 
IMD (60Hz/7KHz):  Less than .25%  @  5 watts, 4  Ohms (80KHz filter) 
Noise (20Hz-20KHz):  Less than -75dBv  (Gain  control at unity) 
Line Output: 
THD (20Hz-20KHz):  Less than .05%  @  4dBv 
IMD (60Hz/7KHz):  Less than .05%  @  4dBv 
Noise (20Hz-20KHz):  Less than -90dBv 
Attenuation Method:  Automatic Rated-controlled Variable  Attenuation* 
Power Consumption:  160 Watts maximum 
* US PATENT  NUMBER  5204908 
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