CX12F140F

The CX12F-140F is a high efficiency, (95 dB 1watt / 1 meter) 12-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.

The CX12F-140FX8-376B is a 12-inch / 1.4-inch coaxial driver sharing the hybrid ferrite-neodymium combined magnetic circuit architecture of the REDCATT coaxial family, with a single shared magnetic structure simultaneously serving the LF woofer (50.8 mm copper voice coil on glass fiber former) and the HF dome assembly (35.6 mm voice coil on Kapton former). The LF section uses REDCATT's carbon fiber paper cone with fabric surround and Nomex spider, rated at 200 W AES / 400 W continuous into 8 ohms, with an extended Xmax of 3.9 mm - nearly double the 2.0 mm of the smaller coaxial variants - providing significantly greater volume displacement (Vd approx. 207 cm3) for deeper bass extension. The HF section uses the 140FCD dome assembly with CNC-machined symmetrical aluminum horn. LF sensitivity is 96.83 dB (2.83V/1m) and HF section sensitivity is 105 dB (1W/1m), requiring approximately 9.8 dB HF attenuation in all crossover configurations.

The recommended crossover frequency is 1,200-1,500 Hz (LR4 or LR6 24-36 dB/octave), noting that the 12-inch LF cone begins beaming above 842 Hz and the voice coil inductance rolloff at 1,251 Hz falls within the crossover region - both constraints must be accounted for in active DSP crossover designs. A Zobel network (5.5 ohm + 23.1 uF) at the LF terminals is required for passive designs. The driver is rated for 200 W AES (LF) and 30 W AES (HF), requiring bi-amplification or a carefully balanced passive crossover.

The CX12F-140FX8-376B is suited for professional PA column speaker systems, installed sound and commercial audio applications, and 2-way coaxial loudspeaker designs where the 12-inch format's higher volume displacement, extended bass capability, and greater power handling are required. The coaxial geometry provides point-source acoustic coherence, and the 320 mm OD establishes the directivity boundary at approximately 538 Hz, above which the integrated aluminum horn progressively governs coverage. Pair with a dedicated active subwoofer for applications requiring response below 80 Hz.