CX120-8 4" Coaxial Driver with 3/4" Silk Dome Tweeter 8 Ohm

Quick Overview

With a natural sounding 3/4" soft dome tweeter concentrically mounted in a long throw poly cone 4" woofer Dayton Audios CX120-8 will produce extremely smooth response on and off-axis while avoiding the phase and lobing issues associated with standard 2-way designs. This driver is perfect for compact designs, portable speakers, or even custom car audio systems.

Product Highlights

  • Full-range with accurate bass and extended high frequency response
  • Coaxial mounted 3/4" silk dome tweeter
  • Open cast frame for improved air flow and minimal power compression
  • 4" curvilinear poly cone woofer with rubber half roll surround

Product Manuals / Spec Sheets / Downloads

Dayton Audio CX120-8 Specifications Sheet

Buying Options

The Dayton Audio CX120-8 is a full-range coaxial loudspeaker providing high-quality sound in a very compact format featuring a 4" curved linear poly cone woofer mated with a 3/4" silk dome tweeter. The poly cone woofer provides a good balance between stiffness, low mass, and damping making for a very natural sounding driver with a smooth frequency response. The silk dome tweeter provides detailed and clear high frequencies with minimal distortion. In addition, the optimized tweeter placement and flaring reduce the phase issues with the woofer that is commonplace with even the BIG brand coaxes. Designed for use as a full-range in a small bookshelf speaker, an extended range (i.e. midrange/tweeter) driver in a 3-way system, or even car audio systems.


4" Woofer:

• 1" voice coil wound on an aluminum former for high power handling
• Curved linear shaped poly cone provides a good balance between stiffness, low mass and damping making for a natural sounding driver with a smooth frequency response
• Optimized rubber surround for reduced break up in the midrange band
• Attractive rigid open cast frame cast frame to minimize reflections, resonances and improve air flow
• High energy ceramic magnet for greater cone control and improved efficiency


Specifications: • Power handling: 40 watts RMS/80 watts max • VCdia: 1" • Le: 0.62 mH • Impedance: 8 ohms • Re: 6.2 ohms • Frequency response: 90-5,500 Hz • Fs: 87.5 Hz • SPL: 88.5 dB 2.83V/1m • Vas: 0.10 cu. ft. ( liters) • Qms: 2.89 • Qes: 0.57 • Qts: 0.48 • Xmax: 3.0 mm • Dimensions: Overall diameter: 4-3/4", Cutout diameter: 3-7/8", Depth: 2".


3/4" Tweeter:

• Silk dome provides detail and clarity of high frequencies
• Coaxially mounted to pole piece of woofer cone
• Optimized placement and trimmed flaring to reduce phase issue interaction with woofer
• Strong neodymium magnet
• Trimmed flared throat to minimize phase issues causing suck-out with woofer
• High pass filter required (not included)


Specifications: • Power handling: 20 watts RMS/40 watts max • VCdia: 3/4" • Le: 0.04 mH @ 10 kHz • Impedance: 8 ohms • Re: 5.6 ohms • Frequency response: 4,500-20,000 Hz • Fs: 2745 Hz • SPL: 89.2 dB 2.83V/1m • Qms: 2.20 • Qes: 7.91 • Qts: 1.72.

Model Number CX120-8
Color Black
Unit of Measure Each
UPC 848791003905
Warranty - Parts 5 Years
Warranty - Labor 5 Years
Product Shipping Weight (lbs.) 1.95
Speaker Type Driver
Nominal Diameter 4"
Power Handling (RMS) 40 watts
Power Handling (max) 80 watts
Continuous Program Power --
Impedance 8 ohms
Sensitivity 88.5 dB 2.83V/1m
Frequency Response 90 - 20,000 Hz
Voice Coil Diameter 1"
Magnet Weight --
DC Resistance (Re) 6.22 ohms
Voice Coil Inductance (Le) 0.63 mH
Resonant Frequency (Fs) 87.5 Hz
Mechanical Q (Qms) 2.89
Electromagnetic Q (Qes) 0.57
Total Q (Qts) 0.48
Diaphragm Mass Inc. Airload (Mms) 4.82g
Moving Mass Of Diaphragm (Mmd) --
Mechanical Compliance of Suspension (Cms) 0.765 mm/N
Surface Area Of Cone (Sd) 52.51 cm²
Volume of Displacement (Vd) --
BL Product (BL) 5.08 Tm
Compliance Equivalent Volume (Vas) 3.0 liters
Maximum Linear Excursion (Xmax) 3.0 mm
Drivers Mechanical Losses (Rms) --
Cone / Diaphragm Material Polypropylene
Entry / Exit Diameter --
Surround Material Rubber
Voice Coil Wire Material CCA
Voice Coil Former Aluminum
Basket/Frame Material Cast Aluminum
Magnet Material Ferrite
Overall Outside Diameter 4.75"
Overall Depth 3.875"
Baffle Cutout Diameter 4.313"
# Mounting Holes 4
Mounting Hole Diameter --
Bolt Circle Diameter --
Product Weight --