NX-6A (Powered Near Field Studio Monitor)
5
Main features of NX-6A
• Woofer featuring the HR (Hyper Radial) diaphragm
The NX-6A employs the 160-mm woofer. It features the
highly rigid HR (Hyper Radial) diaphragm, developed by
using the latest diaphragm technology called "Radial pa-
permaking technology". As a result, the NX-6A offers a rich
low frequency sound with minimum distortion.
Furthermore, by using the "UDR tangential edge" for the
woofer edge, it eliminates the unnecessary resonance and
achieves pure and clear sound reproduction (see Figure 1).
UDR tangential edge
HR diaphragm
• Tweeter featuring magnesium diaphragm
The 20-mm hard dome tweeter employs the magnesium dia-
phragm. This tweeter produces natural and extended high
frequencies, while eliminating a peculiar sound which most
metallic tweeters may produce (see Figure 2).
Magnesium
diaphragm
• HP sound reflectors
The two HP sound reflectors are installed in the enclosure
as shown in Figure 3. In the NX-6A enclosure, micron wool
is also placed appropriately.
This configuration reflects the sound in the enclosure dif-
fusely and creates the condition where stationary wave is
decayed. The time alignment construction is adopted on
the buffle surface of the enclosure, which allows to position
each sound image accurately. The flush surface design elimi-
nates sound blur.
HP sound reflector
• Bi-amplifier power
The NX-6A utilizes a powerful bi-amplifier design (60W
for the woofer, 40W for the tweeter). Driving each speaker
unit independently eliminates audio impurity caused by
the electric interference between the units. The built-in
power amplifier also provides functions for compensat-
ing audio frequency characteristics to match the sonic
character of a room, including the low frequency (around
55Hz range) equalizer and the tweeter level control. The
power amplifier is equipped with both the balanced and
unbalanced input connectors, allowing connection to any
audio systems.
The arrangement example of the HP sound reflectors (the cut model above
shows the inside of the Fostex NF-1).
Radial paper-forming technology
Using the radial paper-forming technology, speaker dia-
phragms are made from compound materials (pulp, fiber,
etc.) in a radial shape. This technology allows you to make
diaphragms with the desired thickness and strength, which
results in improving the speed and extent of a sound.
UDR (Up/Down Roll) tangential edge
A revolutionary technology is used for the NX-6A woofer
edge. The edge is created by joining up-roll and down-roll at
their tangential surfaces while utilizing FEM model analysis
to determined the optimum bonding points. The UDR tan-
gential edge is adopted to the edge of the NX-6A woofer.
<Figure 1>
<Figure 2>
<Figure 3>
<Figure 4>
Amplifier
section
