About a foot.
Seriously, about a foot and a woofer. The Silvers have 48" ribbons, the plats have 60" ribbons (and 4 woofers, whereas the silvers have 3). Different crossovers, of course, and the plats are bigger (must accommodate the extra ribbon length and the extra woofer). Silvers have the same ribbon that are in the AL-IIIs
It should sound like it isn't there!
There is a difference between hearing and listening...
Making life enjoyable through expensive electronics.
Carver: C-4000 & C-1 preamps, PSC-60 preamp/tuner, TX-11a tuner, M-400 (2), C-500, M-500, M-500t, M-500t Mk.II, A-500x, AL-III loudspeakers (2 pr.)
Sunfire:Theater Grand III processor, Ultimate Receiver, Cinema Grand Signature 400 ~ seven, True Subwoofer Mk. II, D-10 Subwoofer