Updated 14 May 2026
| Brand | RCF |
| Category | Musical Instruments |
| Available at | 1 UK stores |
RCF
RCF SUB 708-AS MK3 18" Active PA Subwoofer
£1180.49
Cheapest at Gear4music · 1 store
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PRICE HISTORY
Current
£1075
Change
+21.9%
Avg
£987
Low
£853
High
£1075
Volatility
6.1%
PRODUCT DESCRIPTION
- Powerful and efficient Class D amplification makes for a more lightweight efficient subwoofer that can maximise its output volume. Delivering up to 1400 W of peak power the SUB 708-AS MK3 gains up to 129 dB of maximum SPL. Combined with RCFs Bass Motion Control technology the woofers motion is kept reasonable in spite of the amplifiers immense power resulting in a consistent linear and loud low-end that resists clipping. Stereo subwoofer With stereo inputs and link/crossover outputs the SUB 708-AS MK3 is best when matched with a pair of full-range PA speakers. Plus with adjustable crossover frequency and a polarity switch you can achieve cardioid response with multiple units or simply adjust your subwoofer to any speaker you want. Built to tour A good subwoofer should be able to endure challenging conditions and RCF have built their new range to do just that. More lightweight and easy to carry thanks to their lighter amplification and ergonomic grips these subwoofers can be stacked and stored easily. An M20 threaded pole mount lets you mount full-range speakers on top of the sub for easy arrays too. Its tough plywood cabinet with a polyurea coating and powder-coated grille resists corrosion and impact damage. Sound foam behind the grille protects internal circuitry from dust or humidity damage and its front-venting ports make them suitable for use in recessed positions. Features Powerful subwoofer with 18-inch driver 1400 W Class D amplification for loud clear and efficient sound reproduction Bass reflex housing extends frequency response down to 35 Hz Stereo inputs and crossover for compatibility with multiple full-range speakers Polarity-reverse switch for more consistency with PA speakers Built-in equalisation soft limiter and protection circuitry Bass Motion Control attenuates excursion of woofer Ultra-durable plywood cabinet with polyurea coating and a powder-coated grille Specifications Frequency Response: 35 Hz - 120 Hz Max. SPL &commat
- 1 m: 133 dB Woofer: 18" 3" voice coil Input Signal: Balanced/unbalanced Input Connectors: XLR Output Connectors: XLR Input Sensitivity: -2 dBu/+4 dBu Hi-Pass Frequencies: 110 Hz Low-Pass Frequencies: 80 Hz Protections: Thermal RMS Limiter: Soft limiter Controls: Volume EQ Phase Crossover Total Power: 1400 W Peak 700 W RMS Cooling: Convection Connections: VDE Safety Agency: CE compliant Cabinet/Case Material: Baltic birch plywood Handles: One each side Pole Mount/Cap: Yes Grille: Steel with clothing Colour: Black Dimensions: Height: 693 mm (27.28 inches) Width: 505 mm (19.88 inches) Depth: 685 mm (26.97 inches) Weight: 40 kg (88.18 lbs)