18 -sound 6NMB420 High Output MB Neodymium (8 of 16 ohm)

Beschrijving

Key features

• • 100 dB SPL 1W / 1m average sensitivity
  • 44 mm (1 3/4 in) voice coil
  • 200 W AES power handling
  • External neodymium magnet assembly
  • Single Demodulating Ring (SDR) for lower distortion
  • Weather protected cone and plates for outdoor usage
  • Improved heat dissipation via Active Cooling System
  • Specially designed for line arrays and compact two way systems

Description

The 6NMB420 is a 44mm voice coil 6.5 inch neodymium midbass transducer
designed for mid low frequency reproduction in system designs where
high intelligibility is required.
When
compared to our 6ND410 state-of-the-art midrange transducer, 6NMB420
offers a lower frequency resonance and a longer linear Xmax value. As a
result the speaker shows an increased output around 250Hz, with a
consequent slightly reduced output above 700Hz.
It is suitable as
mid-bass in line array systems or multiple way systems with high-pass
crossover above 200 Hz and low-pass up to 3kHz; enclosure might be
closed or vented with volume size starting from 2 lit.
The speaker
offers a superb linearity: distortion values are furtherly minimized by
new enhanced design criterias, developed by Eighteen Sound engineers,
taking the 6NMB420 to very high level of performance.
The extremely
powerful external neodymium magnet assembly assures high flux
concentration, low power compression and excellent heat exchange. The
levels of force factor and power handling are, as a consequence, at the
upper professional level with best power to weight ratio.
A
consistent heat transfer is guaranteed by the encapsulation of the
magnetic structure in the interior of the basket, offering a large
contact space between the back plate and the dissipating structure.
Particular
efforts were dedicated to the surround shape and material design in
order to minimize the resonances on mid range frequencies. The triple
roll design offers a consistent damping to typical bell modes.
The 44 mm voice coil is made of light-weight aluminum wire and assures linearity and high power handling.
The
ability to perform in humid environments is a key feature of the
6NMB420: this is achieved through a proprietary humidity repellent cone
treatment.