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NF-1Series
Near Field Studio Monitors
PROFESSIONAL
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Main features
■
Double spidered 16cm (6.5 inch)
woofer featuring a newly developed
HP diaphragm which delivers a
highly transient sound, wide
directivity and exact sound imaging
with extraordinary low distortion
■
A UDR tangential diaphragm edge
eliminates unwanted antiresonance. This, combined with the
use of a push-pull damper in the
woofer assembly results in a superaccurate response at even the most
subtlest of audio signals
■
Wide-range UFLC soft dome tweeter
reproduces signals up to 40kHz
■
Highly rigid cast aluminium frames
for both woofer and tweeter units
keep unwanted vibrations and
resonances to a minimum
■
Magnetically shielded - can be used in
close proximity to a video monitor
■
Unique time-aligned enclosure
features a baffle configuration and
HP sound reflectors resulting in a
near-perfect internal enclosure
environment
■
Careful placement of drivers and
innovative enclosure design allows
for a wide optimum listening area
NF-1A
■
Dedicated bi-amplifier (60W
LF + 60W HF) drives both
drivers electrical isolation
PROFESSIONAL
■
A large sized R-core power
transformer ensures stability
of low frequencies - even at
high pressure levels
■
balanced XLR and
unbalanced phone input
connectors
■
3-point (H/H-M/L) audio
adjusting filters &
independent tweeter control
NF-1Series
Near Field Studio Monitors
HYPERBOLIC PARABOLOID
DIAPHRAGM
The NF-1series employ the world’s
first implementation of an HP structure
in an near field monitor.
Unlike conventional diaphragms, the
curved surface of the HP diaphragm
offers increased responsiveness and
resonance-free operation.
UFLC DIAPHRAGM
SOFT DOME TWEETER
The utilisation of a UFLC (polyUrethane
Film Laminated Cloth) diaphragm in
the NF-1’s soft dome tweeter allows
for the highest possible fidelity and
sound reproduction - even at
extremely high frequencies.
Something which, until now, has not
been possible with conventional soft
dome technologies.
True and accurate monitoring is the
utopia sought by recording studios,
video post houses, remote broadcast
facilities and project studios the
world over. Monitoring which
truthfully reproduce all aspects of
the program material free from any
sonic coloration and distortion.
Yet this is exactly what the new and
innovative Fostex NF-1 (passive) and
NF-1A (active) Near Field Studio
Monitors do.
Nothing more, nothing less.
And at any volume.
Here are nearfield reference
monitors meticulously designed to
be completely neutral, to offer the
widest frequency range, to minimise
listening fatigue and to allow you to
accurately pinpoint and analyse all
aspects of your creative output.
In short, they set a new standard.
But isn’t this something you have
A BREAKTHROUGH
IN DRIVER TECHNOLOGY
By using an HP diaphragm, the NF-1/NF-1A
set new standards in driver unit design.
heard before? After all, many
manufactures will make the same
sort of claims for their studio
monitors. But few, if any back it up
with hard, scientific facts.
Fostex however can and do, because
they’ve made real advances in
speaker and enclosure design
technology which has resulted in,
what could be, the perfect reference
monitor.
BLANK SHEET OF PAPER
So what makes the NF-1 series so
different? For a start, Fostex started
with a blank sheet of paper when
designing the three crucial
components of the NF-1/NF-1A; the
low frequency woofer unit, the high
frequency tweeter unit and the
speaker enclosure.
Nothing was taken for granted.
Nothing was assumed.
HP DIAPHRAGM
The NF-1/NF-1A employ a
completely new type of low
frequency unit featuring a newly
developed HP (Hyperbolic
paraboloid) diaphragm.
The 3rd-order curved surface
structure of this technology results
in the ability to reproduce faster-
rising sounds more responsively, the
minimisation of self-resonating
frequencies and the total lack of
sound colorisation characteristics.
But Fostex didn’t stop there. New
technology also shows itself in the
UDR (Up/Down Roll) tangential edge
structure of the low frequency unit.
This edge is created by joining up-
roll and down-roll at their tangential
surfaces while utilising FEM model
analysis to determined the optimum
bonding points.
PROFESSIONAL NEAR FIELD STUDIO MONITORS
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PROFESSIONAL NEAR FIELD STUDIO MONITORS
NEWLY DESIGNED
BASS REFLEX SYSTEM
Although the NF-1/NF-1A uses a bass reflex
enclosure, Fostex have, again,
re-worked the technology to provide real
gains in terms of bass response
characteristics.
This has involved the active utilisation of the
reverberent sound caused by the internal HP
reflectors which exits the enclosure through
the two bass-reflex ports.
(Something which is just not possible with
enclosures which only use conventional
glass fibre for internal damping).
The placement of the exit ports was also
critical in allowing a smooth and natural
blending of the sound coming from the
woofer and tweeter units.
It is this edge which plays a key part
in the overall performance of the
units.
SOFT DOME HF UNIT
Fostex could have opted for a
standard soft dome tweeter for the
NF-1/NF-1A. But as good as these
are in standard form, Fostex felt the
need to develop a new type of soft
dome unit, one which features UFLC
in its construction.
Conventional soft dome units exhibit
minute ‘pinholes’ in the damping
materials resulting in dips in the
frequency response. In using UFLC
materials, Fostex have eliminated
these, made a 30% weight reduction
and widened the frequency response
across the range.
But all this attention to detail would
have counted for nothing if Fostex
had, like others, used plastic or
pressed metal driver frame
assemblies.
This is because these types of
construction do not, unlike the die-
cast aluminium frame used for the
woofer and tweeter units in the NF-
1/NF-1A, offer optimum vibration
suppression.
ENCLOSURES
A monitor enclosure is much more
than just the box in which to house
the driver units. It too must be
acoustically designed to minimise
the vibrations which can colour and
degrade the sound.
The NF-1/NF-1A time-aligned bass-
reflex enclosures features a number
of construction and acoustic
treatment techniques, which
combine to offer an ideal chamber
for suppressing vibration and
unwanted reflections.
These include:
■
A unique internal baffle
configuration (patent applied
for), using HP sound reflectors
to naturally extinguish standing
waves.
■
21mm thick super-rigid MDF
particle board for the main
enclosure construction
widening to 33mm where the
drivers are mounted.
■
Rounded edges on the front
baffle for reduced reflection of
mid-frequency sounds.
■
Two precisely tuned 2"
cylindrical ports for increased
bass response whilst
maintaining a compact
enclosure.
THE TRUTH
Hooking up a pair of Fostex NF-1’s
or NF-1As for the first time is
somewhat of a revelation. You may
be surprised at what you hear. Your
material may sound better. It may
sound worse. But at least it will be a
true representation, free from any
sonic coloration and distortion.
Which is where we came in.
INTERNAL
ARCHITECTURE
The internal architecture of an
NF-1/NF-1A has been
acoustically designed to
minimise resonances and
vibration which can add
unwanted colour to the sound.
HP SOUND
REFLECTORS
The inclusion of HP sound
reflectors prevents the
generation of standing waves in
the enclosure.
Like the HP drivers, the
constantly varying 3rd-order
curved surface of the HP
reflectors, along with their
carbon fibre/PBO construction
minimises self resonance.
NF-1 CONNECTIONS
For optimum performance and
flexibility, the NF-1 features a
4-terminal connection hub.
This allows for bi-wiring and
bi-amping techniques.
NF-1 CROSSOVER
DESIGN
The extremely natural and
ultra-smooth transition
between woofer and tweeter
units is due to another
breakthrough in monitor
design.
While the high frequency UFLC
tweeter unit uses a low loss
6dB crossover, the smooth roll
off of the low frequency
woofer, (afforded by the
unique HP diaphragm
technology), renders the use of
a crossover for this unit
obsolete.
121 effects
PROFESSIONAL NEAR FIELD STUDIO MONITORS
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Impedance
PROFESSIONAL NEAR FIELD STUDIO MONITORS
Specifications
PROFESSIONAL
NF-1
Impedance 8 Ω
Speaker Units
HF unit 20mm Soft Dome UFLC
LF unit 160mm HP diaphragm woofer
Frequency response 50Hz - 40kHz
Sound Pressure Level 89dB/W (1m)
Power handling 120 watts (program) / 60 watts (RMS)
Crossover frequency 10kHz
Enclosure Type Bass reflex type featuring
Size 240mm x 340mm x 274mm
Input Connections 4mm gold terminals with
Weight Approx 9.1kg
NF-1A
SPEAKER SECTION
Impedance 8 Ω
Speaker Units
HF unit 20mm Soft Dome UFLC
LF unit 160mm HP diaphragm woofer
Frequency response 50Hz - 40kHz
Maximum Sound Pressure Level 106dB/W (Max/rated input)
Enclosure Type Bass reflex type featuring
AMPLIFIER SECTION
Output
(Low frequencies) 60W (typical)
(High frequencies) 60W (typical)
Total Harmonic Distortion 0.05%
Input (Balanced)
Connector XLR-3-2 type (Pin 2:HOT) x 1
Impedance > 20kΩ
Level +4dBu
Input (Unbalanced)
Connector ø 6mm phone jack x 1
Impedance > 20kΩ
Level -10dBV
Crossover frequency 5kHz
Tweeter variable range ±3dB
Filters
(High frequencies) 10kHz, +3 / 0 / -3 (selectable)
(Hi-Mid frequencies) 3kHz, Off:0 / On:-3dB
(Low frequencies) 60Hz, +3 / 0 / -3 (selectable)
GENERAL
Dimensions 240mm x 340mm x 320mm
Weight Approx 11kg
Power Requirements 120V, 60Hz. 230V, 50/60Hz. 230V, 50Hz
Power Consumption 52W
NOTICE: UNIQUE TECHNOLOGIES
Patents are pending for the following unique technologies.
• Configuration of HP diaphragm*
• HP diaphragm adapter*
www.fostex.co.jp
Fostex Corporation, 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021
Tel: +81 (0)42-546-4974 Fax: +81 (0)42-546-9222
diaphragm tweeter
HP sound reflectors
Bi-wiring option
diaphragm tweeter
HP sound reflectors
• UDR tangential edge*
• UFLC diaphragm material
In accordance with our policy of continuous development, we reserve the right to change specifications without notice. E&OE.
• New bass-reflex system with HP
sound reflectors
* woofer & tweeter
CONNECTIONS
NF-1 - terminals for various bi-amping applications
NF-1A - Balanced XLR and unbalanced phone jack
NF-1A
Amplifier
DEDICATED &
ACOUSTICALLY
ISOLATED
BI-AMPLIFIER
The NF-1A features a fully
independent bi-amplifier with
60W of independent power
available for both the Low and
High frequencies. This ensures
that each unit is driven in perfect
electrical isolation. The amplifier
is also cleverly installed ensuring
that unwanted vibrations are kept
to an absolute minimum.
R-CORE TRANSFORMER
The large sized R-core
transformer supplies more than
enough power to ensure that the
Low frequencies maintain their
integrity - even at high sound
pressure levels.
FLEXIBLE FILTERING
Adjusting filters include LO FREQ
(+3, 0, -3dB @ 60Hz), HI-MID
ATT (0, -3dB) and HI FREQ (+3, 0,
-3dB). An independent tweeter
control (-3dB to +3dB variable)
is also present. Crossover point is
set at 5kHz).
Distributor / Authorised Dealer
NF-1 FREQUENCY RESPONSE 0° 30° 60°
NF-1A FREQUENCY RESPONSE
LO/HI = +3dB
LO/MID/HI = -3dB
0°
30°
60°
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