SF: • Passive sound field speaker, using the built-in amplifier inMADSEN Astera², or
• Sound field speaker with built-in amplifier or external amplifier, with both types
using the line output from MADSEN Astera².
Transducer options depend on how MADSEN Astera² is ordered and calibrated.
Outputs
AC: 3 x 2 mono jacks, 1/4 "
BC: 2 x mono jacks, 1/4 "
SF power output: 5 x terminals,
5 x 40W peak, 8Ω load
SF line output: 3 x mini XLR 6 pin
5 x +6 dBu, balanced
External inputs
CD/Analog line in:
0.2 to 2.0 Vrms, 10 kΩ2 x RCA phone
Talk Back microphone: • Electret microphone
• Input voltage: 0.002 to 0.02 Vrms
• Input resistance: 2.21 kΩ.
• 3.5 mm jack
Stimuluspresentation
Normal:
The signal is presented when the Stimulate button is pressed.
Continuous ON:
The signal is interrupted when the Stimulate button is pressed.
Pulse: The signal is pulsed.
Pulse duration: 225ms on and 225ms off (default).
Operator accessories
Operator monitor speaker
• 1.5W 8Ω, connected between tip and ring, sleeve floating
• 3.5 mm jack
Operator monitor headset - head-
phones
• 40 mW 16Ω
• 3.5 mm jack
Operator monitor headset - boom
microphone
• Electret microphone
• Input voltage: 0.002 to 0.02 Vrms,
• Input resistance: 2.21 kΩ.
• 3.5 mm jack
Otometrics - MADSEN Astera²
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16 Technical Specifications