4‑Zone Paging Microphone for Adastra RM244V / RM4460 Mixer Amplifiers
Overview
This professional-grade paging microphone, often referred to as the Adastra CS4 Call Station, is specifically engineered for use with the Adastra RM244V or RM4460 mixer amplifiers. It delivers reliable zone paging capabilities in environments such as schools, hospitals, retail outlets, offices, and event spaces.
- Target audience: Sound installers, integrators, facilities managers, PA system users seeking reliable zoned paging.
- Key benefits: Simplified wiring via RJ45 (signal + power), individual or all-zone paging, choice of 8 chime tones, seamless integration with background music playback.
- Unique selling points: Zone assign buttons, reset control to restore music, up to 1 km CAT5 connectivity with optional adaptor, 3.5 mm auxiliary input for external audio.
- Certifications and reputation: Adastra units are widely specified in commercial audio installations, noted for quality and durability.
Design and Build Quality
The call station is built from solid materials and features a sturdy desk base. It weighs around 670 g and measures 460 × 140 × 115 mm, offering a stable, professional presence on any console or desk. The cardioid electret condenser capsule ensures clear vocal pickup, reducing ambient noise. Zone and chime controls are tactile, with a reset button for quick return to music mode. The RJ45 connector streamlines installation, carrying both power and data.
Key Technologies and Features
- RJ45 power/data integration: Simplifies installation and reduces cable clutter.
- Zone assign buttons: Allows paging to any of the 4 zones individually or all simultaneously.
- 8‑tone chime selection: Customisable alert before paging for clear notification.
- 3.5 mm aux input: Accepts external audio sources for playback or previewing.
- Up to 1 km transmission range: Via CAT5, ideal for large commercial premises.
- RS‑485 interface: Reliable digital control with low interference.
- Cardioid condenser mic: Focused voice pickup with minimal background noise.
Specifications
| Specification | Details |
|---|
| Power Source | 24 V DC @ 500 mA via RJ45 (optional external adaptor) |
| Polar Pattern | Cardioid |
| Frequency Response | 150 Hz - 22 kHz (-3 dB) |
| Input Level/Impedance | Mic: -46 dBV / 600 Ω; Aux: -10 dBV / 50 kΩ |
| Output Level/Impedance | 10 dBV / 600 Ω (balanced) |
| S/N Ratio | -60 dB (all zones paging) |
| Max Cable Run | 100 m via CAT5 (1 km with 24 V adaptor) |
| Connectors | RJ45, 3.5 mm Aux, 24 V DC jack |
| Dimensions | 460 × 140 × 115 mm |
| Weight | 0.67 kg |
| Controls | Zone/page buttons, reset button, chime & aux/mic level, chime DIP switches |
Performance and User Experience
The CS4 paging mic provides reliable, intelligible announcements across four distinct zones, integrating smoothly with background music systems on RM244V or RM4460 amplifiers. Users report clear voice transmission thanks to the cardioid pattern. Flexible zone selection simplifies targeted communication. The chime feature is helpful in capturing attention without causing undue disruption. The robust build withstands daily use in busy environments.
Q&A Section
- Q: Is it compatible with both RM244V and RM4460?
A: Yes, it connects to either via RJ45 and supports full 4‑zone paging functionality.
- Q: How do I power the unit?
A: It's powered over CAT5 from the mixer‑amp at 24 V DC. For runs beyond 100 m, a separate 24 V adaptor is required.
- Q: Can I page to only one zone?
A: Yes, there are dedicated buttons to select individual zones or all zones simultaneously.
- Q: Can I play music through the mic unit?
A: Yes, via the 3.5 mm aux input, you can inject an external audio source.
- Q: What ensures clear voice clarity?
A: The cardioid electret capsule and RS‑485 digital interface minimise noise and focus on the speaker's voice.
- Q: What is the chime function for?
A: Pressing 'page' plays a selected chime (from 8 options) before the announcement, grabbing attention politely.
