Adastra BC4V 4″ 20W Speakers – Black (Pair/Single)
Versatile Indoor Speakers. 100V Line or 8Ω Operation. Crystal Clear Sound. 🔊🏠
The Adastra BC4V is a compact 2-way speaker system designed for background music and public address applications. With a 4″ woofer, 1″ dome tweeter, and flexible 100V/8Ω selector switch, it delivers clean, balanced audio for shops, cafes, offices, schools, and homes.
✨ Star Features at a Glance:
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2-Way Speaker System: 4″ (100mm) reinforced paper cone woofer + 1″ (25mm) balanced dome tweeter with crossover network.
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Flexible Operation: Rotary selector switch for 100V line tappings (20W, 10W, 5W, 2.5W) or 8 Ohms operation (35W RMS / 70W Max).
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Wide Frequency Response: 110Hz – 20kHz for clear vocals and balanced sound.
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High Sensitivity: 88dB SPL @ 1W/1m – efficient and loud.
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Wall Mounting Bracket Included: Easy installation on walls or ceilings.
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Alternative M6 Threaded Mounting Points: Compatible with standard speaker brackets.
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Spring Terminal Connections: Simple, tool‑friendly wiring.
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Sleek Black Design: Discreet and professional appearance for any environment.
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Supplied Singly: Order one or more as needed.
📊 Technical Specifications
| Feature | Specification |
|---|---|
| Order Code | 952.713UK |
| Model | BC4V |
| Type | Indoor 2-Way Speaker |
| Woofer Size | 4″ (100mm) – Reinforced Paper Cone |
| Tweeter | 1″ (25mm) Balanced Dome |
| Frequency Response | 110Hz – 20kHz |
| SPL (1W/1m) | 88dB |
| 8Ω Power (RMS) | 35W |
| 8Ω Power (Max) | 70W |
| 100V Tappings | 20W, 10W, 5W, 2.5W + 8Ω bypass |
| Impedance (100V) | 500Ω, 1kΩ, 2kΩ, 4kΩ |
| Connections | Spring Terminals |
| Mounting | Wall Bracket Included + M6 Thread Points |
| Dimensions (W×H×D) | 150 × 195 × 150 mm |
| Weight | 1.63 kg |
| Colour | Black |
✅ Your Installation Checklist
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Versatile Application: Background music, PA, retail, hospitality, education, home audio.
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100V or 8Ω: Rotary selector matches any system – constant voltage or low impedance.
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Clean, Balanced Sound: 2-way design with crossover delivers clear vocals and smooth highs.
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Easy Installation: Wall bracket included plus spring terminals for quick wiring.
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Efficient & Loud: 88dB sensitivity means more volume with less amplifier power.
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Compact & Discreet: Small footprint blends into any décor.
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Flexible Power Tappings: Choose the right power level for your zone.
🛒 Reliable Sound for Any Space!
Click ‘Add to Cart’ for high‑quality, versatile indoor speakers. The Adastra BC4V delivers clear, efficient audio in 100V or 8Ω systems – perfect for background music and announcements.







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