40000
20000
10000
5000
2000
1000
500
200
100
50
20
90
100
80
70
60
50
40
30
110
10
Hz
dB
NF-1A FREQUENCY RESPONSE
LO/HI = +3dB
LO/MID/HI = -3dB
40000
20000
10000
5000
2000
1000
500
200
100
50
20
90
100
80
70
60
50
40
30
110
10
Hz
dB
8
16
32
É
∂
Impedance
PROFESSIONAL
P
R
O
F
E
S
S
I
O
N
A
L
N
E
A
R
F
I
E
L
D
S
T
U
D
I
O
M
O
N
I
T
O
R
S
Specifications
NF-1A
Amplifier
Distributor / Authorised Dealer
In accordance with our policy of continuous development, we reserve the right to change specifications without notice. E&OE.
N F - 1
Impedance
8
Ω
Speaker Units
HF unit
20mm Soft Dome UFLC
diaphragm tweeter
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
HP sound reflectors
Size
240mm x 340mm x 274mm
Input Connections
4mm gold terminals with
Bi-wiring option
Weight
Approx 9.1kg
N F - 1 A
SPEAKER SECTION
Impedance
8
Ω
Speaker Units
HF unit
20mm Soft Dome UFLC
diaphragm tweeter
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
HP sound reflectors
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
> 20k
Ω
Level
+4dBu
Input (Unbalanced)
Connector
ø 6mm phone jack x 1
Impedance
> 20k
Ω
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
Fostex Corporation, 3-2-35 Musashino, Akishima, Tokyo, Japan 196-0021
Tel: +81 (0)42-546-4974 Fax: +81 (0)42-546-9222
www.fostex.co.jp
* woofer & tweeter
NOTICE: UNIQUE TECHNOLOGIES
Patents are pending for the following unique technologies.
• Configuration of HP diaphragm*
• HP diaphragm adapter*
• UDR tangential edge*
• UFLC diaphragm material
• New bass-reflex system with HP
sound reflectors
NF-1 FREQUENCY RESPONSE 0° 30° 60°
0°
30°
60°
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).
CONNECTIONS
NF-1 - terminals for various bi-amping applications
NF-1A - Balanced XLR and unbalanced phone jack
