The Adastra SL6 Slimline Ceiling Speaker (model 952.548UK) is a premium-grade, low‑impedance in‑ceiling loudspeaker designed for both residential and commercial environments. It is ideal for background music systems in restaurants, offices, care homes, and retail spaces.
Engineered for seamless integration and consistent performance, the SL6 features a robust hi‑flex polypropylene cone woofer and a 0.5″ mylar-dome tweeter, delivering sustained audio clarity. Its slim white baffle with a twist-fit grille offers a discreet finish that complements modern interiors. Gold-plated spring terminals and three dog‑ear mounting clips facilitate a quick and secure installation, even in confined ceiling voids.
| Specification | Details |
|---|---|
| Power Source | Corded (passive) |
| Motor Type | 2‑Way crossover |
| Impedance | 8 Ω |
| Woofer | 165 mm (6.5″) PP cone |
| Tweeter | 12 mm (0.5″) mylar dome |
| Frequency Response | 40 Hz-20 kHz |
| Cross‑over Frequency | 4.5 kHz |
| SPL @ 1 W/1 m | 89 dB |
| Dispersion Angle | 160 degrees |
| Power RMS | 40 W per speaker |
| Mounting Depth | 102 mm |
| Cut‑out Diameter | 204 mm |
| Dimensions | 102 mm × 232 mm Ø |
| Weight | 1.50 kg each |
The SL6 offers well-balanced sound with excellent clarity across a wide frequency range. Its 160 degrees dispersion angle ensures even coverage, while the quality components provide reliable performance over time. Installation is straightforward, making it suitable for both new constructions and retrofit projects in professional and domestic environments.
Q: Are these speakers suitable for bathroom or damp environments?
A: No, they are not IP-rated. Consider using weather-resistant models in moisture-prone areas.
Q: Will they work with my existing amplifier?
A: Yes, they are compatible with any 8 Ω amplifier delivering up to 40 W per channel.
Q: Can the grille be painted?
A: Yes, it can be spray painted using light mist coats. Ensure the perforations remain unobstructed.
Q: What ceiling depth is required?
A: A minimum depth of 102 mm is required for installation.
Q: How do I clean the grille?
A: Remove and gently clean with a soft or damp cloth. Avoid abrasive products.
