Eigtheen Sound 8CX401F 8 " 1" High Output Coaxial Ferrite Transducer 8ohm
The 8CX401F coaxial transducer is a 8 inch - 1 inch coaxial driver combining excellent linearity with good efficiency and power handling capabilities.

95dB SPL 1W / 1m average sensitivity
280W LF - 50W HF power handling
51mm (2 inches) LF Interleaved Sandwich Voice coil (ISV)
25,4mm (1 inch) HF driver edgewound voice coil
90 degrees coverage pattern
Ideal for compact reflex applications

LF General Specifications

Nominal Diameter 200 mm (8 in)
Rated Impedance 8 Ohm
AES Power 280 W
Program Power 400 W
Peak Power 800 W
Sensitivity 95 dB
Frequency Range 65 ÷ 6100 Hz
Power Compression @-10dB 0,5 dB
Power Compression @-3dB 1.4 dB
Max Recomm. Frequency 2800 Hz
Recomm. Enclosure Volume 10 - 40 lt. (0,35 - 1,41 cuft)
Minimum Impedance 6,1 Ohm at 25°C
Max Peak To Peak Excursion 19 mm (0,75 in)
Voice Coil Diameter 51 mm (2 in)
Voice Coil Winding Material Edge-wound Aluminum
Suspension M-roll, Polycotton
Cone Curvilinear, Paper

Thiele Small Parameters

Fs 56 Hz
Re 5 Ohm
Sd 0,0227 sq.mt. (35,2 sq.in.)
Qms 3,23
Qes 0,38
Qts 0,34
Vas 23,9 lt. (0,85 cuft)
Mms 18 gr. (0,04 lb)
BL 9,3 Tm
Linear Mathematical Xmax ± 5,8 mm (± 0,23 in)
Le (1kHz) 0,96 mH
Half space efficiency 93,7 dB

HF General Specifications

D.C. Resistance 8,3 Ohm
Continuous Power 50 W above 2,5 kHz
Sensitivity 105 dB
Frequency Range 2,5 kHz - 20 kHz
Min Xover Frequency 3 kHz 12 dB/oct
Diaphragm material Pen
Voice Coil winding material Edge-wound aluminum
Voice Coil Diameter 25,4 mm (1,0 in)

Overall diameter 210 mm (8,27 in)
N. of mounting holes and bolt 8
Mounting holes diameter 6,25 mm (0,25 in)
Bolt circle diameter 195 - 198 mm (7,68 - 7,80 in)
Front mount baffle cutout 186 mm (7,32 in)
Rear mount baffle cutout 184 mm (7,24 in)
Total depth 150,5 mm (5,93 in)
Flange and gasket thickness 14,5 mm (0,57 in)
Net weight 4,4 kg (9,76 lb)
Shipping weight 5,0 kg (11,1 lb)
CardBoard Packaging dimensions 230 x 230 x 170 mm

The 8CX401F coaxial transducer is a 8 inch - 1 inch coaxial driver combining excellent linearity with good efficiency and power handling capabilities.
It is primarily intended for compact reflex enclosures and, because of its versatile characteristics, may also be used in multiway systems or ceiling applications. Its nominal dispersion is 90 degrees.
The curvilinear, paper LF section cone is formed using a unique wood pulp composition designed to achieve the best possible rigidity and stiffness. A polycotton multiroll surround to provide increased excursion whilst controlling break up modes carries it. The 51mm Ø state-of-the-art, aluminum wire voice coil employees same technology of that fitted to our top-of-the-range models using our Interleaved Sandwich Voice coil (ISV) technology. In essence, a high strength Fiberglas former is used to carry windings on both the outer and inner surfaces to achieve a mass balanced coil. This results in an extremely linear motor assembly, which, in conjunction with the highly advanced design of the magnetic structure, provides a high force factor or BL. The high frequency driver incorporates a polyester material diaphragm for best movement and stress control; the special radialribs increase stiffness avoiding uncontrolled vibration modes in the usable frequency range. An edge-wound copper clad aluminum voice coil wounded on treated Nomex completes the diaphragm assembly. A computer aided FEA has been used in order to maximize the cone profile coupling and to control the energy in the desired frequency range.
A dedicated high quality passive crossover network is available upon request. With the increasing use of outdoor audio events, the ability to perform in humid environments is another feature of the 8CX401F. This is achieved by means of exclusively developed humidity repellent cone treatment.
coaxial transducer is a 8 inch - 1 inch coaxial driver combining excellent linearity with good efficiency and power handling capabilities.
It is primarily intended for compact reflex enclosures and, because of its versatile characteristics, may also be used in multiway systems or ceiling applications. Its nominal dispersion is 90 degrees.
The curvilinear, paper LF section cone is formed using a unique wood pulp composition designed to achieve the best possible rigidity and stiffness. A polycotton multiroll surround to provide increased excursion whilst controlling break up modes carries it. The 51mm Ø state-of-the-art, aluminum wire voice coil employees same technology of that fitted to our top-of-the-range models using our Interleaved Sandwich Voice coil (ISV) technology. In essence, a high strength Fiberglas former is used to carry windings on both the outer and inner surfaces to achieve a mass balanced coil. This results in an extremely linear motor assembly, which, in conjunction with the highly advanced design of the magnetic structure, provides a high force factor or BL. The high frequency driver incorporates a polyester material diaphragm for best movement and stress control; the special radialribs increase stiffness avoiding uncontrolled vibration modes in the usable frequency range. An edge-wound copper clad aluminum voice coil wounded on treated Nomex completes the diaphragm assembly. A computer aided FEA has been used in order to maximize the cone profile coupling and to control the energy in the desired frequency range.
A dedicated high quality passive crossover network is available upon request. With the increasing use of outdoor audio events, the ability to perform in humid environments is another feature of the 8CX401F. This is achieved by means of exclusively developed humidity repellent cone treatment.