The SC-520 AB is a high-power in-ceiling speaker featuring built-in A/B line separation, as required by DIN EN 60849 / VDE 0828 for certified voice alarm systems. Outfitted with two independent 4˝x2.5˝ oval full-range drivers and two high-quality 100 V transformers, it offers an elegant and space-saving solution for redundant audio coverage in public spaces.

Its modern quick-clamp mounting system enables easy and secure installation in most ceilings, including plasterboard. The combination of a reinforced plastic mounting frame and a coated steel grille ensures tamper resistance and long-lasting durability. The SC-520 AB is also available in moisture-resistant (FI-100) or fire-resistant (BS-5839) configurations, and custom RAL color finishes are available on request.

Features:

• Dual speaker & transformer setup for true A/B line redundancy
• Quick-clamp system for fast installation, ideal for plasterboard ceilings
• Tamper-proof, robust design
• Subtle 2 mm bezel for elegant ceiling integration
• Optional moisture-proof and fire-rated variants
• Custom RAL color finishes on request

Technical Specifications:

Model:

• SC-520 AB

Rated / Program Power:

• 2 x 10 W (15 W max.)

Tappings (100 V):

• 2 x 10 W / 5 W / 2.5 W

Frequency Response (±10 dB):

• 90 – 16,000 Hz

SPL @ 1 W / 1 m:

• 96 dB

Max SPL (Pmax / 1 m):

• 113.4 dB @ 182 Hz

Dispersion Angle (-6 dB at 1 kHz):

• 180°

Speakers & Impedance:

• 2 x 4˝ x 2.5˝ / 8 Ohm

Ceiling Cutout (square):

• 185 x 185 mm ±5 mm

Outer Dimensions / Mounting Depth:

• 220 mm / 70 mm

Weight / Color:

• approx. 2.2 kg / White