Solton SUB 18 BPA is an active bandpass subwoofer with a single 18-inch driver, built for applications where maximum low-end output from a compact enclosure matters. A built-in Class D amplifier rated at 1000 W RMS paired with a DSP processor handles 4000 W peak power, and the bandpass design delivers higher efficiency and louder bass than a bass-reflex enclosure of comparable size. Running from a single mono feed simplifies integration into the rest of the system without extra mix-side setup.
A Compact Bandpass Design Instead of a Large Box
Enclosing the driver in a bandpass chamber produces a high SPL over a narrow frequency range without growing the cabinet footprint, which matters when loading into smaller vans or working on tighter stages. A variable crossover point across 80-120 Hz along with ready-made presets at 80 Hz, 100 Hz, and 120 Hz make it quick to match the subwoofer to a specific mid-high cabinet without manually tuning filters. A cardioid preset limits rear bass radiation, helping keep the monitor mix clean at high output levels.
A Ready-Made Base for the Top Box
A built-in M20 flange on the top panel lets a fullrange cabinet sit directly on top of the subwoofer, building a complete, portable point-source system without a separate stand. A reinforced enclosure with polyurea coating and a metal grille backed with acoustically transparent foam protect the electronics and driver during heavy touring use, and side handles plus built-in wheel preparation make the 55 kg cabinet easier to move.
KEY FEATURES
- Single low-frequency driver, 18-inch with a 4-inch voice coil
- Built-in Class D amplifier rated at 1000 W RMS
- Integrated DSP processor
- Variable crossover point across 80-120 Hz
- Ready-made crossover presets: 80 Hz, 100 Hz, 120 Hz, cardioid
- Compact bandpass enclosure design
- Limiter and over-voltage protection
- M20 flange for mounting a fullrange top cabinet
TECHNICAL SPECIFICATIONS
- Type: self-powered, single 18-inch, bandpass subwoofer
- Frequency range (-10 dB): 30 Hz to 120 Hz
- Frequency response (+/-3 dB): 35 Hz to 120 Hz
- Coverage pattern: omnidirectional
- Power handling: 1000 W continuous, 4000 W peak
- LF driver: 18-inch, 4-inch voice coil
- Crossover points: 80 Hz, 100 Hz, 120 Hz, cardioid
- Protection: limiter, over-voltage protection
- Controls: volume, DSP, power switch
- Enclosure: birch plywood, polyurea coating
- Connectors: XLR in/out, power in
- Dimensions (WxHxD): 660 x 760 x 540 mm
- Weight: 55 kg
