Hertz Dieci DCX 100.3 4" 2-Way Coaxial Speakers, 30W RMS, 4Ω, Pair

Hertz DCX 100.3 is a 4-inch two-way coaxial speaker engineered to deliver balanced full-range sound in compact factory speaker locations.

This model is a two-way coaxial speaker integrating a midrange driver and high-frequency tweeter into a single assembly for straightforward installation.

Category: 4-inch two-way coaxial speakers.

In a system, the DCX 100.3 functions as a full-range speaker suitable for use with factory head units or low- to moderate-power external amplification.

Installation is intended for vehicles with 100 mm (4") OEM speaker locations. Shallow mounting depth supports fitment in tight door and dash applications.

Key Performance Features

• 4-inch two-way coaxial speaker design
• Continuous power handling: 30 W RMS
• Peak power handling: 60 W
• Frequency response: 70 Hz – 21 kHz
• Integrated crossover for simplified installation

System Architecture

• Type: Coaxial
• Way configuration: 2-way
• Nominal impedance: 4 Ω

Power Handling / Output

• Continuous (RMS): 30 W
• Peak: 60 W

Driver / Construction

• Cone: Water-repellent pressed paper
• Dome material: PEI
• Woofer magnet: High density flux ferrite
• Tweeter magnet: Neodymium
• Woofer magnet size (D x d x h): 70 x 32 x 10 mm (2.7 x 1.3 x 0.4")

Installation Use Cases

• Replacing factory 4-inch speakers in doors or dashboards
• Compact vehicles requiring shallow mounting depth
• OEM system upgrades without adding external crossovers

Technical Specifications

• Brand: Hertz
• Series: Dieci
• Model: DCX 100.3
• Component: Two-way coaxial
• Size: 100 mm (4")
• Impedance: 4 Ω
• Power Handling (Continuous): 30 W
• Power Handling (Peak): 60 W
• Frequency Response: 70 Hz – 21 kHz
• Mounting Depth: 50 mm (2.0")
• Weight (one speaker): 0.45 kg (0.99 lb)

Physical Specs

• Mounting Depth: 50 mm (2.0")

What’s Included

• Hertz DCX 100.3 coaxial speakers

Why Buy From MCOR Automotive

• Authorized Hertz dealer with system-matching support
• Install-focused guidance for OEM replacement applications
• Knowledgeable assistance for fitment and power pairing

Physical Specs:

A	99 mm (3.9 in.)
A3	129 mm (5.1 in.)
B	94 mm (3.7 in.)
C	50 mm (2.0 in.)
D	43 mm (1.7 in.)

Fitment, Installation & Warranty Notes

• Fitment Help: Need help confirming fitment, compatibility, amplifier matching, or installation parts? Use our Fit Guide or contact us through the chat button before ordering.
• Authorized Retailer: MCOR Automotive is an authorized Hertz retailer. Products purchased from MCOR include applicable manufacturer warranty coverage when installed and used according to manufacturer guidelines.