Neodymium, or Neo, is the new buzzword among speaker manufacturers, and
well it should be. Neodymium is an extremely lightweight, yet highly
magnetic material that some believe will revolutionize the speaker
industry. The advantages of a highly sensitive, lightweight driver in
musical instrument amplification are obvious. The EA NL-210 weighs in at
a mere 39 lbs. This represents a savings of 43 pounds from our CxL-210.
One main reason is the reduction in weight provided by the neodymium
drivers. Each magnet in the NL-210 weighs in at a mere 7 ounces compared
to the CxL-210's massive 105-ounce magnets. The savings of 196 ounces
(12.25 pounds) is just the start. Additionally, a speaker frame holding
7-ounce magnet does not need the same heft of one holding a 105-ounce
magnet. Finally the use of imported Poplar plywood as opposed to Baltic
Birch for the cabinet construction represents a further reduction in
weight. The use of imported Poplar is for another discussion, let's get
back to the discussion of Neodymium.
This revolutionary material comes with some serious application issues.
Issues that EA is uniquely qualified to address. Neodymium is highly
sensitive. Unfortunately, their sensitivity diminishes with heat.
Neodymium magnets that have suffered heat fatigue are permanently
damaged. Secondly, compared to other driver types, some Neo drivers have
an "ugly" midrange hump at about 600hz (midrange). EA's proprietary
design of Kevlar 10" neodymium drivers has all but reduced these issue
that others continue to face. The EA Neodymium drivers employ an
aluminum heat sink with a center phasor that cools the motor structure
and smoothes the speaker response. EA Neodymium drivers have specially
designed kapton voice coils and are power rated between 250 to 300
watts. The motor structure has been optimized to maintain a symmetrical
magnetic field for extremely low distortion. The EA voice coil assembly
utilizes copper clad aluminum wire yielding a design that has the ideal
compromise between reliability and lightweight. The longer winding
length of our Neo voice coil assemblies provide a longer linear
excursion that translates into a more controlled low end. Finally, the
Kevlar cone that is used on our Neo driver is both stronger and has a
smoother response than the industry standard paper cones.
Finally, Neodymium is difficult to work with. The added difficulties and
the relative rarity of Neodymium contribute to the added expense of Neo
drivers as compared to conventional drivers. The reduction in price
over the past few years has made Neodymium feasible to use in Musical
Instrument applications and EA is uniquely qualified to bring out the
best in Neo.
Watch The Video
Spend a few minutes with EA's chief Speaker Designer, John Dong. This is one guy you'll wish you had teaching your 12th grade Physics class.
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