The Studiomaster Vortex 18SA is a high-power 18-inch active subwoofer designed for live sound reinforcement in churches, concerts, DJs, and medium to large PA systems. It delivers deep, powerful low-end performance with a 2400W peak Class D amplifier and a frequency response of roughly 38–150 Hz, making it capable of producing strong, punchy bass that supports full-band systems and large venues. In real use, it adds serious weight and impact to kick drums, bass guitars, and electronic music, giving a fuller and more professional live sound when paired with top or full-range speakers. The cabinet is built from 15mm plywood with a steel grille, making it durable for transport and stage use, while built-in DSP functions like low cut, delay, and volume control help with quick setup and system tuning.
Key Features
-
18” Active Subwoofer (High-Power Bass System) – Designed for deep, powerful low-end reinforcement
-
2400W Peak Power Output – Massive headroom for large church and live sound systems
-
600W RMS / 1200W Program Power – Strong continuous performance for long services and events
-
Deep Bass Frequency Range (≈ 43Hz – 150Hz) – Extends low frequencies for full worship and live music feel
-
High Output SPL (up to 134 dB) – Loud, clean bass even in large halls
-
Built-in 24-bit DSP Processing – Low cut, delay, and level control for system tuning
-
Durable Plywood Cabinet (15mm) – Strong build for touring and heavy use
-
Full Steel Front Grille – Protects driver during transport and stage use
-
Dual XLR Inputs + Outputs – Easy integration with mixers and other speakers
-
35mm Pole Mount Support – Can be used with top speakers in full PA setup
-
Large Carry Handles – Easier transport despite heavy build
Specifications
-
Type: Active 18” Subwoofer
-
Driver: 18” woofer (75–99mm voice coil depending on variant)
-
Power Output:
- Peak: 2400W
- Program: 1200W
- RMS: 600W
-
Frequency Response: ~43Hz – 150Hz
-
Max SPL: 134 dB
-
DSP: 24-bit (low cut / delay / volume)
-
Inputs/Outputs: 2 × XLR in, 2 × XLR out
-
Cabinet Material: 15mm plywood
-
Weight: ~35 kg
-
Dimensions: ~530 × 682 × 610 mm
Best For
- Large churches
- Live concerts & worship events
- Outdoor PA systems
- DJ + live hybrid setups
