Graham Audio LS5/5 Speakers

In depth article on slotted Baffles https://www.grahamaudio.co.uk/technology/slotted-baffles/

Straight away you'll notice that the bass and midrange drivers are mounted behind slots on the front panel. This feature is highly unusual today, but it works to control the off-axis response of the drive units which results in a smoother response through the crossover regions in typical listening environments. Not surprisingly, we get a lot of questions about this, so we have written an in depth article explaining how the slots work.

Naturally, this is a BBC-style "thinwall" cabinet, where the relatively thin panels are mass-loaded to ensure that resonances are moved away from the critical mid-range region. Rockwool provides air damping. Hand-matched veneers are applied and finished to a very high standard. The grille is carefully designed to minimise diffraction effects and is held in place by concealed rare-earth magnets.