Ultra-compact passive subwoofer The pair of ISUB TWIN passive subwoofers considerably increases the bass impact of an on-board audio installation, in particular thanks to the heavy and robust double ferrite and aluminum diaphragm speakers. The front grilles promote optimized sound dispersion in the passenger compartment. The installation of these ultra-compact boxes is simple and quick, without modification to the vehicle. They slide easily under the seats* and attach very simply, without tools, using the hook-and-loop straps provided. However, it is very easy to screw them into the floor if you wish. We recommend powering the ISUB TWIN with the Impulse 4.320 amplifier, two channels of which will remain available to connect a pair of speakers in the front doors for example. RUNNING-IN PERIOD In order to get the best of your ISUB TWIN speakers, a running-in period must be respected to ensure they are ready for this. We recommend that, once the system is ready for listening, the drive units should be run-in with medium volume setting, with music that has the full bandwidth of frequencies (sub-bass through treble). This running-in period should last for a few weeks, to gain the full potential. After which the excellent performance of your ISUB TWIN kit can be fully appreciated.
