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8  Stereo Power 70 0 W 65 0 W
4  Stereo Power 1200 W 1100W

2  Stereo Power 1400 W 1100W
8  Bridged Mono Power 2400 W 2200W
4  Bridged Mono Power 2800 W 2200W
Max RMS Output Voltage (each channel) 90V
Peak Output Voltage (each channel) 126v

    SPECIFICATIONS
   
  SPECIFICATIONS
 
Type ....................................................................Dynamic (moving coil)
Frequency Response..........................................50 to 15,000 Hz
Polar Pattern.........................................................Unidirectional (cardioid), rotationally symmetrical about microphone axis,uniform with frequency
Sensitivity (at 1,000 Hz Open Circuit Voltage) ....-54.6 dBV/Pa (1.89 mV), 1 Pa = 93 dB SPL
Impedance ..........................................................Rated impedance is 150 ohms (300 ohms actual)
for connection to microphone inputs rated low impedance
Polarity ............................................................... Positive pressure on diaphragm produces positive
voltage on pin 2 with respect to pin 3
Connector ...........................................................Three-pin professional audio connector(male XLR type)
Case.....................................................................Dark gray, enamel-painted, die cast metal; matte
-finished, silver, spherical steel mesh grille
Overall Dimensions.............................................See User Guide
Net Weight...........................................................292 grams
   
  Application
 

The Bostonaudio BT 58S unidirectional (cardioid) dynamic vocal microphone is designed
for professional vocal use in live performance, sound reinforcement, and studio recording.
It has a tailored vocal response for a sound which is a world standard for singing or spee
ch. A highly effective, built-in spherical filter minimizes wind and breath "pop" noise.
A cardioid pickup pattern isolates the main sound source while minimizing unwanted bac
kground noise.
Rugged construction, a proven shock-mount system, and a steel mesh grille ensure that ev
en with rough handling, the SM58s will perform consistently, outdoors or indoors.