Adastra C6S Stereo Ceiling Speaker
The Adastra C6S is a 6.5″ in‑ceiling, two‑way stereo speaker tailored for both domestic and commercial installations where space is limited but high-quality audio is essential.
Overview
Designed for homeowners, café owners, offices and light commercial environments, the C6S delivers both left and right stereo channels from a single ceiling speaker while preserving good channel separation.
Key Benefits
- Dual‑voice‑coil woofer and dual mylar dome tweeters for full-range clarity and genuine stereo imaging.
- Wide 160 degrees dispersion ensures even coverage across the room.
- Easy dock-ear installation and gold-plated spring terminals speed up fitting and ensure reliable connections.
- Robust white ABS frame and steel grille deliver durability and a subtle aesthetic.
- Power handling of 50 W maximum (25 W RMS per channel) per speaker delivers clear sound at moderate volumes.
Design and Build Quality
The 165 mm polypropylene woofer, rubber-surround and twin 13 mm mylar dome tweeters are engineered for resilience and consistent sound performance. The white ABS enclosure and steel grille blend seamlessly into ceilings, and the speaker weighs just 1.4 kg, with a mounting depth of only 76 mm.
Key Technologies and Features
- Dual-Voice-Coil Technology: Delivers separate left/right audio signals from one speaker unit.
- Dual Mylar Dome Tweeters: Provide crisp, clear high frequencies with strong stereo separation.
- Gold-Plated Spring Terminals: Ensure corrosion-resistant, firm cable connections.
- Dog‑Ear Mounts: Allow rapid installation into typical ceiling cavities.
- Wide-Angle Dispersion: The 160 degrees spread distributes sound evenly throughout the space.
Specifications
| Specification |
Details |
| Power Source |
Corded, low-impedance |
| Voltage / Impedance |
2 × 8 Ω |
| RMS Power |
2 × 25 W |
| Max Power |
2 × 50 W |
| Woofer Size |
165 mm (6.5″) |
| Tweeter Size |
2 × 13 mm (0.5″) |
| Frequency Response |
70 Hz-20 kHz |
| Sensitivity |
82 dB @ 1 W/1 m (± 2 dB) |
| Dispersion Angle |
160 degrees |
| Cut‑Out Diameter |
193 mm |
| Mounting Depth |
76 mm |
| Dimensions |
Ø 227 mm × 86 mm |
| Weight |
1.4 kg |
| Additional Features |
Gold-plated terminals, dog-ear mounts, steel grille, ABS frame |
Performance and User Experience
In real-world use, the C6S produces a cohesive stereo soundstage without needing two separate speakers, making it ideal for background music and ambient audio. The woofer delivers balanced low-to-mid frequencies, while the tweeters ensure crisp vocals and high-end detail. Its 160 degrees dispersion ensures coverage even in wider rooms, and installation is straightforward thanks to the mounting system. Built robustly, it suits both domestic and light commercial environments.
Suitable Use Cases
- Background music in cafés, lounges, or reception areas.
- Domestic applications like kitchens or bathrooms.
- Small offices, meeting rooms, or educational facilities.
- Discreet audio installations where aesthetics are key.
Q&A Section
- Q: Can two C6S speakers be daisy‑chained from one amplifier channel?
A: You can connect up to two in parallel on an 8 Ω amplifier output. Beyond that, impedance may drop and affect safety.
- Q: Is the C6S suitable for bathrooms?
A: It's rated for indoor use only and not splash‑proof. For wet environments, choose a speaker with an IP rating.
- Q: Can I replace tweeters or grille?
A: Tweeters are not user‑replaceable; for maintenance, please consult Adastra technical support.
- Q: Are other Adastra speakers compatible in the same system?
A: Yes, you can pair C6S with other low‑impedance Adastra models provided the amp matches the total load.
- Q: Does it require a crossover?
A: No external crossover needed--the speaker includes internal passive components. Just wire it directly to a suitable amplifier.
