Pre-owned, new &, unused, supplied in the original packaging.
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This is the Room Mode Calibration Kit for the JBL LSR6300 series of studio monitor speakers, developed in support of the proprietary RMC technology, which allows the user to fine tune the speakers according to the acoustic environment of the room, and the speaker placement in the room.
The RMC kit includes a small sound level meter, a remote bypass switch, a test CD, and a Q template sheet. The remote bypass switch connects to either the LSR6312SP subwoofer, or the LSR6328P 2-way speaker, via a 1/4" jack in the rear panel, and a standard 2-conductor cable.