RCF
RCF SUB 708-AS MK3 18" Birch Ply Active Subwoofer with DSP 1400W
RCF SUB 708-AS MK3 18" Birch Ply Active Subwoofer with DSP 1400W
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RCF SUB 708-AS MK3 18" Birch Ply Active Subwoofer with DSP 1400W
Product Overview
The RCF SUB 708-AS MK3 is a high-performance 18-inch active subwoofer designed for professional live sound reinforcement, mobile DJs, touring systems, clubs, and event applications. Featuring a powerful Class-D amplifier, advanced DSP processing, and a high-excursion 18-inch woofer, it delivers deep, controlled bass with exceptional reliability.
Equipped with a 1400W peak amplifier, Bass Motion Control excursion management, stereo crossover, switchable crossover frequencies, and protection systems, the SUB 708-AS MK3 provides powerful low-frequency extension while maintaining clarity and accuracy during demanding performances.
Built with a rugged Baltic birch plywood enclosure, protective polyurea coating, steel grille, ergonomic handles, and an integrated M20 pole mount, the SUB 708-AS MK3 is designed for professional touring, installations, and portable PA systems.
Key Features
18" High Power Woofer
Large driver delivers deep and powerful low-frequency performance.
1400W Class-D Amplifier
High-efficiency amplifier provides strong output and reliability.
Advanced DSP Processing
Electronic EQ, crossover control, limiting and system protection.
Bass Motion Control
Optimises cone excursion for improved bass performance.
Baltic Birch Cabinet
Professional plywood enclosure built for touring environments.
Flexible System Integration
Stereo XLR inputs and outputs with crossover controls.
Technical Specifications
| Product Type | Active Bass Reflex Subwoofer |
|---|---|
| Woofer Size | 18" High Power Woofer |
| Voice Coil | 3" Voice Coil |
| Amplifier Type | Class-D Digital Amplifier |
| Amplifier Power | 1400W Peak / 700W RMS |
| Frequency Response | 35Hz - 120Hz |
| Maximum SPL | 133dB |
| Cabinet Design | Bass Reflex |
| DSP Processing | Electronic EQ, Crossover, Phase Control, Limiter Protection |
| Crossover Frequencies | 80Hz / 110Hz Selectable |
| High Pass Frequency | 110Hz |
| Controls | Volume, EQ, Phase, Xover |
| Protection Systems | Thermal Protection, RMS Protection, Soft Limiter |
| Inputs | Stereo XLR Balanced Inputs |
| Outputs | Stereo XLR Signal Outputs |
| Input Sensitivity | -2dBu / +4dBu |
| Enclosure Material | Baltic Birch Plywood |
| Grille | Steel Grille with Protective Backing |
| Pole Mount | M20 Threaded Pole Mount |
| Cooling | Convection Cooling |
| Dimensions (H x W x D) | 693 x 505 x 685mm |
| Weight | 40.6kg |
| Colour | Black |
Ideal For
- Mobile DJs
- Live Sound
- Concerts & Events
- Touring Systems
- Clubs & Venues
- Corporate Events
- Festival Applications
- Houses of Worship
- Professional PA Systems
- Portable Sound Reinforcement
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