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CFC120-4 4-1/2" Carbon Fiber Extended Range Woofer 4 Ohm
Quick Overview
The Dayton Audio CFC120-4 delivers impressive bandwidth and output from an affordable 4-1/2" 4Ω extended-range woofer. Its woven carbon fiber cone combines low mass with excellent rigidity for clean, detailed sound, while a vented motor and aluminum voice coil former help maintain consistent performance as output increases. With response extending from 50 to 8,500 Hz and sensitivity of more than 87 dB at 2.83 V/1m, the CFC120-4 is an excellent choice for compact speakers, multi-way systems, and budget-friendly DIY projects.Product Highlights
- Woven carbon fiber cone combines low mass and excellent rigidity for clean, detailed sound
- Wide 50 to 8,500 Hz response provides excellent bandwidth from a compact 4-1/2" driver
- Vented pole piece improves voice coil cooling to help reduce power compression
- Low-profile frame supports flexible flush or surface mounting
- 2.5 mm Xmax provides useful low-frequency output from compact speaker designs
Product Manuals / Spec Sheets / Downloads
Dayton Audio CFC120-4 Specification SheetBuying Options
Bring premium materials and versatile performance to your next compact speaker project without blowing the budget. The Dayton Audio CFC120-4 combines a woven carbon fiber cone with a compact 4-1/2" 4Ω design to deliver clean, lively sound with useful bass extension and excellent midrange detail. It’s a great choice for compact 2-way speakers, custom builds, and DIY projects where space, performance, and value all matter.
Key Specs:
- Nominal Diameter: 4-1/2"
- Power Handling (RMS): 30 Watts
- Power Handling (MAX): 60 Watts
- Impedance: 4Ω
- Frequency Response: 50 – 8,500 Hz
- Fs: 57 Hz
- Qts: 0.45
- Vas: 0.16 ft³
- Sensitivity: 87.3 dB 2.83V/1m
- Voice Coil Diameter: 1"
- Maximum Linear Excursion: ±2.5 mm
Designed for Reliable Performance
The woven carbon fiber cone gives the CFC120-4 a stiff, lightweight diaphragm that helps maintain clarity across its broad operating range. Its rigid construction helps resist unwanted flexing as output increases, keeping vocals, instruments, and other critical midrange content clean and detailed. The distinctive woven finish also gives the driver a premium appearance that stands out well beyond its affordable price.
A 25 mm 2-layer voice coil wound on an aluminum former provides a lightweight and responsive foundation for the moving assembly. The vented pole piece provides airflow through the motor to improve voice coil cooling and help reduce power compression during demanding use. Combined with the ferrite magnet, this design helps the CFC120-4 maintain consistent performance as listening levels increase.
Built for Compact, Versatile Speaker Projects
With 2.5 mm of Xmax and response extending down to 50 Hz, the CFC120-4 delivers useful low-frequency capability for a compact 4-1/2" driver. Its low-loss rubber surround and large-diameter flat spider provide stable suspension and allow smooth, controlled cone movement throughout its excursion range. A poly dust cap adds damping to help control unwanted resonances.
The low-profile stamped steel frame makes the CFC120-4 easy to integrate into space-conscious speaker designs. Its construction is suitable for both flush and surface mounting, giving builders additional flexibility when enclosure depth or installation space is limited. Its 4Ω impedance also makes it a versatile option for a wide variety of compact home, portable, and custom audio projects.
Versatile Performance Without the Premium Price
With a frequency response of 50 to 8,500 Hz and sensitivity of more than 87 dB at 2.83 V/1m, the CFC120-4 combines useful bass extension, strong sensitivity, and broad midrange coverage in a compact package. This extended bandwidth makes it equally useful as a wide-range woofer or as part of a multi-way speaker system. Best of all, it delivers carbon fiber cone construction and thoughtful performance features at a price that makes ambitious DIY projects easier to build.
| Speaker Series | Carbon Fiber |
| Model Number | CFC120-4 |
| Color | Black |
| Unit of Measure | Each |
| UPC | 848791012242 |
| Warranty - Parts | 5 Years |
| Warranty - Labor | 5 Years |
| Weight | -- lbs. |
| Speaker Type | Woofer |
| Nominal Diameter | 4-1/2" |
| Power Handling (RMS) | 30 watts |
| Power Handling (max) | 60 watts |
| Impedance | 4 ohms |
| Sensitivity | 87.3 dB @ 2.83V/1m |
| Frequency Response | 50-8,500 Hz |
| Voice Coil Diameter | 25 mm |
| DC Resistance (Re) | 3.6 ohms |
| Voice Coil Inductance (Le) | 0.3 mH @ 1 kHz |
| Resonant Frequency (Fs) | 57 Hz |
| Mechanical Q (Qms) | 2.91 |
| Electromagnetic Q (Qes) | 0.54 |
| Total Q (Qts) | 0.45 |
| Diaphragm Mass Inc. Airload (Mms) | 7.5g |
| Surface Area Of Cone (Sd) | 54.9 cm² |
| BL Product (BL) | 4.23 Tm |
| Compliance Equivalent Volume (Vas) | 4.46 liters |
| Maximum Linear Excursion (Xmax) | 2.5 mm |
| Cone / Diaphragm Material | Carbon Fiber |
| Surround Material | Rubber |
| Basket/Frame Material | Stamped Steel |
| Magnet Material | Ferrite |
| Overall Outside Diameter | 110 mm |
| Overall Depth | 61.8 mm |
| Baffle Cutout Diameter | 80 mm |
| # Mounting Holes | 4 |