Martin Audio X115B

Martin Audio X115B – 15” Passive Compact Subwoofer with 500W AES, 135dB Peak SPL & High-Output Bass Performance Martin Audio X115B – Professional Compact 15” Subwoofer Introduction The Martin Audio X115B is a high-performance 15-inch passive subwoofer designed for professional live sound reinforcement, portable PA systems, clubs, and fixed installations. It is part of the Blackline X series , known for combining compact design with high-output sound performance and rugged touring reliability. Engineered by Martin Audio , the X115B is designed to extend low-frequency response for full-range loudspeakers, delivering tight, controlled bass with high efficiency and strong SPL output. Core Design: Direct Radiating Subwoofer The X115B uses a direct-radiating bass reflex design , meaning the driver works in combination with tuned ports to enhance low-frequency output. It includes: 1 × 15-inch long-excursion LF driver 3-inch (75mm) voice coil for high power handling Ferrite magnet motor system Bass reflex enclosure with tuned ports This design ensures a balance between deep bass extension and fast transient response, making it suitable for both music playback and live performance reinforcement. Acoustic Performance & Frequency Response The X115B is engineered for strong low-frequency performance with controlled response. Key acoustic specifications: Frequency response: 45Hz – 150Hz (±3dB) Low-frequency extension: down to 40Hz (-10dB) Sensitivity: 102dB (1W/1m) Maximum SPL: up to 129dB continuous / 135dB peak Nominal impedance: 8 ohms The high sensitivity allows the subwoofer to produce very high output levels with relatively moderate amplifier power. Power Handling & Efficiency The X115B is designed for professional amplification systems. Power ratings: 500W AES continuous power handling 2000W peak power handling capability This allows the subwoofer to operate reliably under demanding conditions, including long-duration events and high-SPL environments such as clubs and live concerts. Bass Character & Sound Performance The X115B is tuned for: Tight and punchy bass response Strong mid-bass impact for kick drums Controlled low-frequency extension Reduced distortion at high output levels Its sound character makes it especially suitable for: DJ systems Live band reinforcement Corporate event audio Medium-sized venues Dispersion & Acoustic Behavior As a subwoofer, the X115B operates in an omnidirectional low-frequency pattern , meaning bass is distributed evenly across the space. This ensures: Consistent bass coverage throughout the venue Smooth integration with full-range loudspeakers Flexible placement options (stacking or single use) Cabinet Design & Build Quality The enclosure is built for professional touring and installation use. Construction features: Birch/poplar plywood cabinet Heavy-duty black textured finish Steel perforated grille for driver protection Integrated handles for transport Pole-mount socket for top speaker mounting M10 flying points for installation use Stackable design for array configurations This robust design ensures durability under frequent transport and installation cycles. Connectivity & Integration The X115B uses professional-grade connectivity: 3 × NL4 (Speakon) connectors Parallel input and link configuration Passive operation (requires external amplifier + DSP) It is typically used with dedicated system amplifiers or DSP-managed rigs for optimal performance and system tuning. System Integration The X115B is commonly paired with: Full-range Martin Audio Blackline X series speakers External DSP amplifiers (Martin Audio MA series or equivalent) Active crossover systems set between 80–120Hz This ensures optimal frequency distribution and system balance. Technical Specifications Product Type: Passive Direct-Radiating Subwoofer Driver: 1 × 15” LF driver (3” voice coil) Power Handling: 500W AES / 2000W peak Impedance: 8 ohms Frequency Response: 45Hz – 150Hz (±3dB) Low Extension: 40Hz (-10dB) Sensitivity: 102dB (1W/1m) Maximum SPL: 129dB continuous / 135dB peak Dispersion: Omnidirectional Enclosure: Bass reflex, plywood construction Finish: Black textured paint Connectors: 3 × NL4 Speakon Mounting: M10 inserts + pole mount socket Weight: ~27 kg Use Cases The Martin Audio X115B is ideal for: DJ sound systems Live concerts and bands Clubs and entertainment venues Corporate AV events Portable PA systems Houses of worship Medium-sized installed sound systems Why It Stands Out The X115B stands out due to: High sensitivity (102dB) for efficient output Strong 135dB peak SPL capability Compact 15-inch design with deep bass response Rugged touring-grade construction Easy integration with professional DSP systems It delivers professional low-frequency performance without requiring extremely high amplifier power. Conclusion The Martin Audio X115B is a compact yet powerful 15-inch passive subwoofer designed for professional audio applications. With its 500W AES power handling , high 135dB peak SPL , and