Beschrijving
Description
The 15ND830 is a high power, high output, low frequency woofer meeting
the most stringent requirements in high quality professional
transducers.
Thanks to its versatility, the 15ND830 can be used in 2-way compact reflex enclosures and reflex / band pass subwoofers.
The
neodymium magnet assembly assures high flux concentration, low power
compression and excellent heat exchange, since the external magnet
configuration is considerably more efficient than traditional
under-pole magnet topology. This results in high levels of force factor
and power handling with an optimum power to weight ratio.
The direct
contact between the heat sink and basket, together with the magnetic
structure, represents a fundamental improvement in thermal connection
and heat dissipation. Hence, power handling capabilities are increased
and power compression lowered.
The deep profile curvilinear cone,
created from a special high strength wood pulp, has been designed to
achieve the best possible linearity within its frequency range. The
cone surround made from a linen material is highly resistant to aging
and fatigue. The in-house developed cone treatment is fully water
repellent and also gives a significant degree of rigidity to the cone.
The
75mm Interleaved Sandwich Voice coil (ISV) assembly is wound on a
strong fiberglas former which improves force transmission and thermal
power handling.
A special coating applied to both the top and back
plates makes the 15ND830 far more resistant to the corrosive effects of
salts and oxidization.
Key features
-
- 98 dB SPL 1W / 1m average sensitivity
- 75 mm (3 in) edgewound voice coil (ISV)
- 450 W AES power handling
- Neodymium magnet assembly
- Weather protected cone for outdoor usage
- Ideal for compact reflex subwoofer and reflex multiway systems
GENERAL SPECIFICATIONS | |
Nominal Diameter | 380mm (15 in) |
Rated Impedance | 8 Ohm |
AES Power | 450W |
Program Power (1) | 700W |
Peak Power (2) | 1500W |
Sensitivity (3) | 98dB |
Frequency Range (4) | 38 ? 5000 Hz |
Power Compression @-10dB (5) | 0,5 dB |
Power Compression @-3dB | 2,0 dB |
Power Compression @Full Power | 3,0 dB |
Max Recomm. Frequency | 2000 Hz |
Recomm. Enclosure Volume | 80 ? 140 lt. (2,83 ? 4,95 cuft) |
Minimum Impedance | 6,7 Ohm at 25?C |
Max Peak To Peak Excursion | 33 mm (1,3 in) |
Voice Coil Diameter | 75 mm (3 in) |
Voice Coil Winding Material | aluminum |
Suspension | M-roll, Polycotton |
Cone | Curvilinear, Paper |
THIELE SMALL PARAMETERS (6) | |
Fs | 39 Hz |
Re | 5,7 Ohm |
Sd | 0,085 sq.mt. (131,75 sq. in.) |
Qms | 3,9 |
Qes | 0,35 |
Qts | 0,32 |
Vas | 213 lt. (7,5 cuft) |
Mms | 80 gr. (0,18 lb) |
BL | 18 Tm |
Linear Mathematical Xmax (7) | ? 6,5 mm (? 0,26 in) |
Le (1kHz) | 1,54 mH |
Ref. Efficiency 1W@1m (half space) | 97,5 dB |
MOUNTING INFORMATIONS | |
Overall diameter | 387 mm (15,24 in) |
N. of mounting holes | 8 |
Mounting holes diameter | 7,15 mm (0,28 in) |
Bolt circle diameter | 370-371 mm (14,57-14,61 in) |
Front mount baffle cutout ? | 353 mm (13,9 in) |
Rear mount baffle cutout ? | 357 mm (14,06 in) |
Total depth | 177 mm (7,01 in) |
Flange and gasket thickness | 11,5 mm (0,45 in) |
Net weight | 4,1 kg (8,05 lb) |
Shipping weight | 4,8 kg (10,6 lb) |
CardBoard Packaging dimensions | 405 x 405 x 214 mm (15,94 x 15,94 x 8,43 in) |
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