WOOFER
NDH 12-3
INTERNAL REF. 703800
KEY FEATURES
MECHANICAL & SHIPPING INFORMATIONS
800 Watt Max Power
Net weight
Overall Diameter
Overall Depth
Baffle Cut Diameter
Mounting holes number
Mounting holes diameter
Mounting bolt diameter
75 mm (3 in) voice coil, aluminium
wire
Neodymium magnet assembly
Weather protected membrane for
5.0 kg
315 mm
155 mm
282 mm
8
7 mm
295 mm
outdoor use
Ventilated voice coil and magnet circuit
MATERIALS
for improved heat dissipation
Frame Material
Voice Coil Former Material
Voice Coil Wire
Cone Material
Cone Shape
Surround Material
Surround Shape
Suspension Material
Magnet Type
Magnet Weight
GENERAL SPECIFICATIONS
Nominal Diameter
Nominal Impendance
Nominal Rdc
Power handling (AES) (*)
Max Power
Minimum Impedance
Frequency Range
Voice Coil Diameter
S.P.L. (1w, 1m)
Nominal Fs
Flux Density
Sinusoidal Test Voltage
12 in - 320 mm
8.00 Ohm
5.4 Ohm
400 Watt
800 Watt
7.52 Ohm
20 ÷ 3000 Hz
3 in - 75 mm
100 dB
55 Hz
1.5 T
15 V
(*) Life Test
Box Volume
Input Signal
Band Pass Filter
Test duration
60 liters
Pink noise
20 - 2000Hz, 12dB/oc
2 hours
THIELE-SMALL PARAMETERS
DIAGRAM
Qms
Qes
Qts
Fs
Re
Mms
Cms
Bl
Sd
Vas
u0
XMax
Le
Rms
Efficiency Bandwidth
Frequency Response
Impendance
Air gap height = mm 10
Winding height = mm 18
11.36
0.23
0.22
55.10 Hz
6.10 Ohm
49.50 g
0.17 mm/N
21.36 T*m
530.00 cm²
66.42 liter
4.68 %
6.5 mm
0.54 mH
1.51 Kg/s
240.49
Aluminium
Kapton
Aluminium
Doped Paper
Exponential
Doped Nomex ® fabric
Two rolls
Doped Nomex ® fabric
Neodymium
460 g
Box 25 dmc - 2.83 V - 1 m
(lac=10m A)