L SUB 4000 is a powerful 18” double vented bandpass subwoofer. Compatible with all LINEAR 5 fullrange speakers and mid/high units, its powerful low end – ranging from 30 to 100 Hertz – is totally and powerfully impressive. L SUB 4000 A can also serve as a sub-low add-on to LINEAR SUB 2000 to beef up the bottom end when required (optional frequency separation). Filter presets are available for Lab.gruppen IPD and PLM 12K44 controllers.
| Power-handling nominal (RMS) | 1200 W |
| Power-handling, program | 2400 W |
| Power-handling, peak | 4800 W |
| Nominal impedance | 4 ohms |
| Max SPL | 135 dB half space (@ 10% THD) |
| Max SPL peak | 137 dB half space (@ 10% THD) |
| Sensitivity 1W/1m | 106 dB half space |
| Frequency response +/- 3 dB | 39 Hz - X-over |
| Frequency response -10 dB | 31 Hz - X-over |
| LF Speaker | 1x 18" (4 ohms) with 2.5" voice coil featuring advanced ventilated voice coil gap (Neodymium) |
| Crossover frequency | 100 Hz, active X-over with controller amp (can be set lower when used as a sub-low) |
| Connections | 2x Speakon NL4, pin assignment switchable between 1+/1- and 2+/2- |
| Pole mount | 2x M20 |
| Handles | 8, integrated |
| Casters | optional 100 mm |
| Enclosure | Birch multiplex |
| Grille | 2 mm metal grille backed with black acoustic foam |
| Finish | Acrylic enamel, black |
| Optional accessories | Protective cover, M20 Distance Pole Add-On, 100 mm casters, Wheelboard, TiltUnit |
| Dimensions (WxHxD) | 91 x 51 x 81 cm |
| Weight | 57.1 kg / 125.9 lbs |
