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The Rutter RUT-01019 Internal Microphone with Junction Box is a marine-grade audio accessory designed for use with onboard communication and alarm systems. It provides a robust and reliable means of capturing speech or ambient audio signals for use with Public Address (PA), alarm annunciators, voice paging systems, or bridge audio monitoring systems on vessels.
| Parameter | Value |
|---|---|
| Microphone Type | Electret condenser (typical) |
| Polar Pattern | Omnidirectional (common for internal mics) |
| Frequency Response | 100 Hz – 10 kHz (typical marine audio range) |
| Sensitivity | ~ -42 to -58 dB (1 V/Pa @ 1 kHz, typical for electret mic) |
| Impedance | 1 kΩ – 10 kΩ (typical mic preamp compatible) |
| Output Type | Low-level audio signal (balanced or unbalanced) |
| Signal Output Connector | Terminals in junction box |
| Parameter | Value / Comment |
|---|---|
| Operating Voltage | 5–24 V DC (depending on preamp / system) |
| Current Consumption | Microphone-dependent (very low) |
| Signal Output Level | Mic-level (preamp input required) |
| Grounding | Shield to chassis / equipment ground |
| Cable Type | Shielded audio cable recommended |
| Parameter | Value |
|---|---|
| Driver Diameter | ~10–15 mm (microphone capsule) |
| Junction Box Dimensions | Typical: 70 × 70 × 30 mm (varies by revision) |
| Weight | Approx 150–300 g (with cable and connector) |
| Mounting Holes | Standard bulkhead screw pattern |
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