Coax
Coaxial
8"
CX8F140F
Code: CX8F-140FX8X8-374B
Coaxial：LF-8"/Ferrite/Paper/150W/8ohm,HF-1.4"/Ferrite/Polmyer/30W/8ohm
Key Features
- LF and HF integrated ferrite-neodymium magnetic circuit
- Aluminum symmetrical horn
- Good off-axes frequency response
Quick Specs
Impedance
8 Ω
Program Power
LF: 300 W / HF: 60 W
Sensitivity
94.00 dB
Magnet
Hybride
Voice Coil
LF: 50.8 mm / HF: 35.6 mm
Design Notes
The CX8F-140F is a high efficiency, (92.5dB 1watt / 1 meter) 8-inch coaxial speaker with very linear frequency response characteristics and high power handling capability. The mid-woofer utilizes REDCATT developed paper pulp cone that has proven its performance in many ours successful designs. The HF section was designed around our most successful dome assembly as used in 140FCD and has integrated symmetrical aluminum horn. The combination of used materials with our state of the art quality production yields in well performing driver even in the most demanding and extreme weather conditions.
Magnetic circuit design
REDCATT engineers have developed ferrite-neodymium based magnetic circuit, capable of delivering the highest level of performance in a small form factor. The combination of ferrite and neodymium delivers an excellent magnetic performance. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability. Aluminum demodulation ring is assembled in the HF section.
Magnetic circuit design
REDCATT engineers have developed ferrite-neodymium based magnetic circuit, capable of delivering the highest level of performance in a small form factor. The combination of ferrite and neodymium delivers an excellent magnetic performance. The magnetic circuit design is optimized to generate the minimum amount of flux modulation, providing exceptional stability. Aluminum demodulation ring is assembled in the HF section.
Specifications
General Specs
Nominal Diameter
8"
Rated Impedance
8 Ohm
Magnet
Hybride
Basket Material
Steel
Power Handling
AES Power
LF: 150 W / HF: 30 W
Continuous Power
LF: 300 W / HF: 60 W
Peak Power
LF: 600 W / HF: 120 W
Voice Coil
Diameter
LF: 50.8 mm / HF: 35.6 mm
Winding Wire
CCAW
Former
Glass Fiber/kapton
Winding Height
12/2.5 mm
T/S Parameters
Qes
0.630
Qms
9.06
Qts
0.590
Vas
10.70 liters
Sd
213.80 cm\u00B2
Mms
20.20 grams
Rms
1.20
Cms
0.1700
Bl
9.93 T\u00B7m
Le
0.470 mH
Sensitivity
94.00 dB
Design Details
Surround Material
fabric/PEN
Cone/Dome Material
Paper CF/PEN
Spider
Nomex
T-Plate
8 mm
Xmax (peak)
2 mm
Xmech
10 mm
Overall Diameter
207.00 mm
Bolt Circle Diameter
197.20 mm
Baffle Cutout Dia.
178.00 mm
Mounting Holes
8
Depth (flange to rear)
107.50 mm
Net Weight
2.80 kg
Ordering Codes
Product Code
CX8F-140FX8X8-374B
Frequency Response & Impedance
2D Drawing
Enclosure Recommendations
LF enclosure alignments:
- Sealed (primary):
24.55 L / Qtc = 0.707 / f-3dB = 103 Hz (Butterworth - flattest sealed; large cabinet)
9.95 L / Qtc = 0.85 / f-3dB = 107 Hz (recommended for PA/installed sound)
5.71 L / Qtc = 1.00 / f-3dB = 115 Hz (compact)
3.41 L / Qtc = 1.20 / f-3dB = 129 Hz (very compact; subwoofer support required below ~120 Hz)
- Vented (secondary) - 75 mm port:
12 L / Fb = 70 Hz / ~170 mm physical port / 4.26 m/s peak port velocity
18 L / Fb = 60 Hz / ~150 mm physical port / 3.65 m/s peak port velocity
25 L / Fb = 52 Hz / ~141 mm physical port / 3.16 m/s peak port velocity
(Subsonic high-pass filter at Fb - 10 Hz mandatory; all velocities well within PA limits)
Frequently Asked Questions
- - LF and HF integrated ferrite-neodymium magnetic circuit
- - Aluminum symmetrical horn
- - Good off-axes frequency response
LF enclosure alignments:
- Sealed (primary):
24.55 L / Qtc = 0.707 / f-3dB = 103 Hz (Butterworth - flattest sealed; large cabinet)
9.95 L / Qtc = 0.85 / f-3dB = 107 Hz (recommended for PA/installed sound)
5.71 L / Qtc = 1.00 / f-3dB = 115 Hz (compact)
3.41 L / Qtc = 1.20 / f-3dB = 129 Hz (very compact; subwoofer support required below ~120 Hz)
- Vented (secondary) - 75 mm port:
12 L / Fb = 70 Hz / ~170 mm physical port / 4.26 m/s peak port velocity
18 L / Fb = 60 Hz / ~150 mm physical port / 3.65 m/s peak port velocity
25 L / Fb = 52 Hz / ~141 mm physical port / 3.16 m/s peak port velocity
(Subsonic high-pass filter at Fb - 10 Hz mandatory; all velocities well within PA limits)
PA coaxial column / ceiling; pair with active subwoofer
AES Power: LF: 150 W / HF: 30 W,
Continuous: LF: 300 W / HF: 60 W,
Peak: LF: 600 W / HF: 120 W.
Sensitivity: 94.00 dB (1W/1m).
