Features and Applications
Features
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Applications
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Product Details SX115
SX115 is a compact direct-radiating passive subwoofer with a 45–100 Hz ±3 dB operating range. It uses one long-excursion 15-inch driver with 4-inch voice coils, water-resistant cones and triple-roll surrounds. Four large reflex ports improve airflow and reduce turbulence at higher output.
The plywood enclosure has a hardwearing textured finish and a coated steel grille with acoustically transparent fabric backing. Recessed ergonomic handles assist handling. An M20 top plate accepts a compatible loudspeaker pole.

Threaded points provide approved eyebolt suspension of one enclosure. Safety points and fittings for side rigging strips also support the manufacturer-approved installed array of up to four cabinets. Locating skids and mating channels allow supported cabinet stacks.
Forward- and rear-facing pairs can provide cardioid operation. Each cabinet uses its own amplifier channel and the dedicated DSP preset for that arrangement.
The standard finish is black. Castors are supplied as an optional accessory pack. A connector-cover accessory provides the manufacturer-specified weather-resistant configuration for outdoor use.
Explore the Martin Audio SX subwoofers at B-Star for the available system options.
Technical Specifications SX115
ACOUSTICS |
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| TYPE | Direct radiating subwoofer |
| CROSSOVER FREQUENCY | 100Hz |
| FREQUENCY RESPONSE — 4π (5) | 45Hz – 100Hz ± 3dB, -10dB @ 36Hz |
| DRIVERS | LF: 15” with 4” Voice coil, Ferrite Motor |
| SENSITIVITY | (2.83V 1m half space) 100dB |
| NOMINAL IMPEDANCE | 8 Ohms |
| RATED POWER | AES 800W, PEAK 3200W |
| MAXIMUM SYSTEM SPL | 129 dB continuous, 135 dB peak, 141 dB peak with crest factor 4 |
| DISPERSION | Omnidirectional, or cardioid when paired in the specified configuration |
CONNECTIONS |
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| CONNECTORS | 2 x NL4 |
| PIN CONNECTIONS (INPUT) | 1+/1– |
| PIN CONNECTIONS (LINK) | 1+/1− (linked from input 1+/1−), 2+/2− (linked from input 2+/2−) |
ENCLOSURE AND MOUNTING |
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| FITTINGS | Two skids with mating channels in the top; top-mounted M20 threaded pole-mount plate; two pocket handles; 24 × M10 fixing points; 16 × M8 inserts for optional castors |
| ACCESSORIES | WPMTRIGI/WPMTRIGI-W; SXGRIDI15; T8TRIGI/T8TRIGI-W; FKIT450; WHEELKIT; WRKIT; ASF20071; HTKCT06 |
DIMENSIONS AND WEIGHT |
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| DIMENSIONS | (W) 500mm, (H) 451mm, (D) 678mm (806mm with Casters) (W) 19.69ins, (H) 17.76ins, (D) 26.69ins (31.73ins with Casters) |
| WEIGHT | 36.5kg (80.5lbs) |


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