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.
• Sensitivity 1W/1m : 106 dB ½ space
• SPL max : 135 dB / 137 dB peak (@ 10% THD) ½ space
• Bandwidth +/• 3dB : 39 Hz • X-over
• Bandwidth -10dB : 31 Hz • X-over
• Speaker : 18""" (2.5"" neodymium coil)
• Cut-off frequency: 100 Hz, active controller required
• Mast inserts: 2x M20
• Weight and dimensions: 57.1 kg, W91 x H51 x D81 cm
• Structure : birch plywood
• Optional castors and trolley