Key features
- 102 dB SPL 1W / 1m average sensitivity
- 100 mm (4 in) high temperature voice
coil
- 600 W AES power handling
- Excellent transient response
- Very low power compression
- Improved heat dissipation via unique
basket design
- Ideal for direct radiating or horn
loaded midrange systems
0221285110 8 Ohm
Description
The 12MB1000 is a very high performance 12" ferrite
midrange driver. It offers high power handling
capability with exceptional sensitivity over the
middle frequency band. It can be used with either
direct radiating or horn loaded applications, as
well as part of a 2 or 3-way system. It is ideally
used in stage monitor, auditorium, touring and
outdoor systems.
The 12MB1000 is the result of an intensive
development program which aimed to produce the best
12" midrange driver possible.
The smooth curvilinear paper cone has a special high
strength wood pulp composition designed to achieve
the best possible linearity within the middle
frequency range and to control bell-mode resonances
around the cone. The cone is carried by a double
half-roll suspension, which is more resistant to
aging and fatigue than traditional materials, and
provides the correct dampening and excursion
control.
The state-of-the-art voice coil employs our own
Interleaved Sandwich Voice coil (ISV) technology, in
which a high strength fiberglas former carries
windings on both the outer and inner surfaces. By
mean of a balanced coil with uniform distribution of
mass and motive energy, this technology assures an
extremely linear motor assembly.
The voice coil cooling has been achieved by
incorporating airways between the chassis back plate
and the top plate of the magnet which allow heated
air from the voice coil and gap to be channeled away
and dissipated by the chassis basket. This
technology is the result of a meticulous design
exercise using a sophisticated in-house 3D CAD
facility. The magnetic structure has also been
optimized using our in-house FEA CAD resource to
maximize flux density in the voice coil gap.
Eighteen Sound R&D has developed a special cone
treatment designed to improve the dampening
properties of the moving assembly, thus considerably
improving the transient response control. This
treatment also gives water repellent properties to
the cone, enabling the12MB1000 to be used in humid
environments without damage.
|
Nominal Diameter |
300 mm (12 in) |
Rated Impedance |
8
Ohm |
AES Power |
600 W |
Program Power (1) |
800
W |
Peak Power (2) |
1600 W |
Sensitivity (3) |
102
dB |
Frequency Range (4) |
80 ÷ 3500 Hz |
Power Compression @-10dB (5) |
0,5
dB |
Power Compression @-3dB |
1,5 dB |
Power Compression @Full Power |
2,1
dB |
Max Recomm. Frequency |
2500 Hz |
Recomm. Enclosure Volume |
8 ÷
60 lt. (0,28 ÷ 2,12 cuft) |
Minimum Impedance |
7,2 Ohm at 25°C |
Max
Peak To Peak Excursion |
20
mm (0,79 in) |
Voice Coil Diameter |
100 mm (3,95 in) |
Voice Coil Winding Material |
copper |
Suspension |
M-roll, Polycotton |
Cone |
Curvilinear, Treated paper |
Fs |
54 Hz |
Re |
5,8
Ohm |
Sd |
0,0531 sq.mt. (82,31 sq.in.) |
Qms |
6 |
Qes |
0,2 |
Qts |
0,18 |
Vas |
60 lt. (2,12 cuft) |
Mms |
55,5 gr. (0,12 lb) |
BL |
23,5 Tm |
Linear Mathematical Xmax (7) |
±
2,5mm (±0,10 in) |
Le (1kHz) |
1,46 mH |
Ref. Efficiency 1W@1m (half space) |
99
dB |
Overall diameter |
315 mm (12,4 in) |
N.
of mounting holes |
8 |
Mounting holes diameter |
7,15 mm (0,28 in) |
Bolt circle diameter |
296
- 300 mm (11,65 - 11,8 in) |
Front mount baffle cutout ø |
282 mm (11,1 in) |
Rear mount baffle cutout ø |
282
mm (11,1 in) |
Total depth |
118,4 mm (4,66 in) |
Flange and gasket thickness |
16,5 mm (0,65 in) |
Net weight |
9,6 kg (21,19 lb) |
Shipping weight |
10,3 kg (22,74 lb) |
CardBoard Packaging
dimensions |
332 x 332 x 184 mm (13,07 x
13,07 x 7,24 in) |
|
FREQUENCY
RESPONSE CURVE OF 12MB1000 MADE ON 50 LIT. CLOSED
BOX ENCLOSURE IN FREE FIELD (4PI) ENVIRONMENT.
ENCLOSURE CLOSES THE REAR OF THE DRIVER. THE THIN
LINE REPRESENTS 45 DEG. OFF AXIS FREQUENCY RESPONSE
FREE AIR IMPEDANCE MAGNITUDE CURVE
|
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