All material © 2007. Martin Audio Ltd. Subject to change without notice.
The high power Blackline F15
+
is a high performance, wide-bandwidth system in a compact and efficient
package. Extended frequency response is provided by a new 15” (380mm) LF driver and a new 1.4”
(35mm) exit compression driver mounted on a rotatable 80° x 50° constant directivity HF horn.
The new LF driver features a tough, water resistant cone and a lightweight, high BL, neodymium motor
system with inside/outside coil windings for improved heat transfer. An aluminium demodulating ring
reduces distortion and improves midrange clarity at high levels and increased excursion is available via a
triple roll surround and deep motor structure.
The new HF driver utilises a titanium diaphragm with controlled break-up modes for improved sonic
performance at high frequencies and the crossover design and LF cone profile have been optimised to
match the directivity of the HF horn and LF section through the crossover region.
The F15
+
may be used with or without a system controller. For demanding applications, Martin Audio
recommends an M3
+
, DX1, DX2 or Engineer system controller configured to perform EQ and limiter
functions.
The M3
+
, DX1, DX2 or Engineer system controller may also be used to configure systems for additional
sub-bass cabinets – e.g. F15
+
+ S18
+
or S218
+
combinations.
3.2
2-way dual-lf, full-range system
F215
+
The Blackline F215
+
is a two-way passive, trapezoidal enclosure with dual 15” (380mm)/3” (75mm) voice
coil low frequency drivers and a 1.4” (35mm) exit titanium diaphragm compression driver, mounted on a
proprietary, rotatable, 80° x 50° constant directivity horn.
Below 250Hz, both LF drivers operate together to produce low frequencies, whilst above 250Hz, only the
upper LF driver is used to reproduce the midrange up to the crossover point. This technique avoids the
uneven response which would occur if both drivers were allowed to operate together over the mid-band.
Each of the two new LF drivers features a tough, water resistant cone and a lightweight, high BL,
neodymium motor system with inside/outside coil windings for improved heat transfer. An aluminium
demodulating ring improves the midrange performance at high levels and increased excursion is available
via a triple roll surround and deep motor structure.