ER-604W
The ER-604W is a compact, lightweight shoulder-type megaphone with whistle signal. It's close-talking microphone has a handy-to-operate volume control and press-to-talk switch. External microphone inputs on the unit's rear panel can accept an optional microphone or a headset microphone for hands-free use. In addition, an AUX (auxiliary) input can accept a CD, MD, or cassette player.
Specification
* 0 dB = 1 V
Power Source
R6 battery × 8 (12 V DC)12 V DC/0.8 A or more (AC adapter or DC power supply unit usable)
Rated Output
6 W
Maximum Output
10 W
Battery Life
Voice: Approx. 10 hours (R6P manganese dioxide battery use)Whistle: Approx. 30 minutes (continuous use)
Audible Range
Voice: 160 m (under noise level of 55 dB)Whistle: 160 m (under noise level of 55 dB)
Microphone
Close-talking type, press-to-talk switch, volume controlFixed to the microphone hanger on the unit's top panel
Signal
Whistle, push switch activation
Input
MIC 1: -40 dB*, 1.5 kΩ, φ6.3 phone jackMIC 2: -18 dB*, 3 kΩ, φ3.5 mini jack, phantom poweringAUX (auxiliary): -12 dB*, 18 kΩ, φ3.5 mini jackExternal power supply: 12 V DCNote: MIC1, 2, and AUX inputs can be used at the same time. However, their individualvolume cannot be adjusted as the unit's volume control is common to those inputs.
Other Function
Voice switch (functions to activate the unit with external input signals, and to makethe unit in stand-by status with no external signal.)Battery check
Operating Temperature
-10
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