User manual

F2 Data Sheet F2
F2/B1 rigging
F2
The F2 is an actively driven, 2-way full-range loudspeaker which
uses a pair of 12" LF/mid range drivers and a 2" HF compression
driver in a horn loaded cabinet. The HF driver is coupled to a
60° x 40° (h x v) constant directivity (CD) horn.
The F2 cabinet is constructed from marine plywood coated with an
impact resistant paint. Fitted to the cabinet sides are recessed
handles and rigging stud plates. On the front is a rigid steel grill
with an acoustically transparent foam cover. Catches to secure an
optional protective transport cover are also fitted to the top and
bottom front edges of the cabinet. Heavy duty wheels are fitted on
the back panel along with ratchet strap guides and countersunk
M10 threaded inserts for attaching safeties and additional rigging.
With a frequency response extending from 80 Hz to over 16 kHz,
the F2 system can be used on its own for speech and vocal
reinforcement. Adding active subwoofers, B2-SUB or C4-SUBs,
extends the capability of the F2 system to high level music
reinforcement.
The relatively narrow dispersion and concentrated directivity of the
F2 is a result of using horn loaded 12 drivers to cover the mid
range. Directivity is well maintained towards the low end of the ca-
binets response - 90° at 600 Hz and 60° from 800 Hz upwards.
The high SPL capability of the F2 design makes it suitable for use in
large venues to cover distances to 30 m and beyond.
The C4/F2/B1 Flying System, described in the d&b Rigging
Accessories Manual, allows the safe and speedy construction of
flown arrays of C4, F2 and B1 loudspeakers.