Very compact subwoofer designed to extend the low-frequency performance of BlacklineX full-range systems. A long-excursion 15″ (380mm) driver on a 3″ (75mm) voice coil in a bass-reflex enclosure, usable singly, stacked or flown on integral M10 inserts. Four large ports cut air noise at high output, the detail that stops a small sub chuffing when it is worked hard.
1 x 15″
Driver
3″ (75mm)
Voice coil
Reflex
Enclosure
Black
Finish
Features
Long-excursion 15″ (380mm) driver
3″ (75mm) voice coil
Bass reflex enclosure
Four large ports reduce air noise at high output
Use singly, stacked or flown
Integral M10 inserts for flying
Black finish
Specifications
| Brand | Martin Audio |
| Manufacturer part number | X115B |
| Type | Subwoofer |
| Series | BlacklineX |
| Driver | 1 x 15″ (380mm), long excursion |
| Voice coil | 3″ (75mm) |
| Enclosure | Bass reflex, four ports |
| Rigging | Integral M10 inserts |
| Frequency response | 45Hz-150Hz ±3dB, -10dB at 40Hz |
| Rated power | 500W AES, 2000W peak |
| Nominal impedance | 8 ohms |
| Sensitivity | 102dB |
| Maximum SPL | 129dB continuous, 135dB peak (half space) |
| Crossover | 80-120Hz active |
| Recommended amplifier | Martin Audio MA3.0, MA5.0Q |
| Connectors | 3 x NL4 type |
| Enclosure material | Birch/poplar ply, black textured paint |
| Grille | Black perforated steel |
| Fittings | 16 x M10 inserts, 35mm pole-mount socket, 2 x bar handles, provision for castors |
| Dimensions (W x H x D, incl. feet) | 465 x 590 x 565mm |
| Weight | 27kg |
| Colour | Black |









