The KUBE supplied with the 107 includes a speaker-specific equalization module that provides level equalization for the tweeter and mid driver, as well as an inverse of the 107s LF response. Furthermore, the KUBE allows the user to control several parameters not previously accessible. First, the LF cutoff is adjustable in four steps: 50, 35, 25, and 18Hz. Second, Q of the bass response is continuously variable from 0.3 (overdamped) to 0.7 (maximally flat). The Q parameter describes the sharpness of a speakers bass resonance. As the Q increases, bass damping decreases until ultimately a response peak develops. The Q parameter also correlates well with bass transient behavior, high-Q designs resulting in underdamped, boomy bass with a lot of overhang. See photos for additional description and condition ask any questions. You are getting the unit and power cord in the photos. Rulers not included

Kef T33 Sp1074 HF tweeter unit - works, however the sound improves by adjusting the dome - ideally needs dome replacing - hence sold as spares / repair. Post UK