18 -sound 15ND830 / 8ohm Low Frequency Neodymium Driver

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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 Diameter380mm (15 in)
Rated Impedance8 Ohm
AES Power450W
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 @-3dB2,0 dB
Power Compression @Full Power3,0 dB
Max Recomm. Frequency2000 Hz
Recomm. Enclosure Volume80 ? 140 lt. (2,83 ? 4,95 cuft)
Minimum Impedance6,7 Ohm at 25?C
Max Peak To Peak Excursion33 mm (1,3 in)
Voice Coil Diameter75 mm (3 in)
Voice Coil Winding Materialaluminum
SuspensionM-roll, Polycotton
ConeCurvilinear, Paper

 

THIELE SMALL PARAMETERS (6)
Fs39 Hz
Re5,7 Ohm
Sd0,085 sq.mt. (131,75 sq. in.)
Qms3,9
Qes0,35
Qts0,32
Vas213 lt. (7,5 cuft)
Mms80 gr. (0,18 lb)
BL18 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 diameter387 mm (15,24 in)
N. of mounting holes8
Mounting holes diameter7,15 mm (0,28 in)
Bolt circle diameter370-371 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 depth177 mm (7,01 in)
Flange and gasket thickness11,5 mm (0,45 in)
Net weight4,1 kg (8,05 lb)
Shipping weight4,8 kg (10,6 lb)
CardBoard Packaging dimensions405 x 405 x 214 mm (15,94 x 15,94 x 8,43 in)

Aanvullende informatie

Gewicht14.00 kg

Merk

18-Sound

18 Sound:  voor zowel de zelfbouwer of als vervanger van merk speakers.Mail ons voor een eerlijke prijsopgaaf, actueel zijn er prijsverlagingen, maar we kunnen die niet op internet vermelden ;-)Uiteraard is er geen retourrecht op speciaal bestelde luidspreker-units.

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