Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair - CEN
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Hertz Dieci DCX 100.3 4" 10cm 2 Way Car Door Dash Coaxial Speakers 30w RMS Pair

£64.99
In stock
SKU: 90783MPN: DCX 100.3
Part of the range · 16 productsPart of the Hertz Dieci range · 16 products See the range →

The Hertz Dieci DCX 100.3 is a pair of 4" (100 mm) 2-way coaxial car speakers rated at 30W RMS and 60W peak, from Hertz's Dieci range. The 50 mm mounting depth makes them well suited to dashboard and shallow door positions.

This listing is the 4" DCX 100.3. The Hertz Dieci coaxial range is also available in 6.5" (DCX 165.3, 60W RMS).

Key specifications

  • Size: 100 mm (4 in.)
  • Type: 2-way coaxial with built-in crossover
  • Power handling: 30W RMS, 60W peak
  • Impedance: 4 ohm
  • Mounting depth: 50 mm (2.0 in.)
  • Frequency response: 70 Hz to 21 kHz
  • Sensitivity: 92 dB
  • Tweeter: PEI dome, neodymium magnet
  • Cone material: Pressed paper
  • Surround material: TPU (Thermoplastic Polyurethane)
  • Sold as a pair

DCX 100.3 two-way coaxial

A compact 4" coaxial speaker from Hertz's Dieci range, built for straightforward fitting without compromising on sound quality.

Satisfying every need, in every car

The DCX 100.3 delivers a linear frequency response and consistent reliability across a wide range of vehicles. A neodymium magnet keeps the assembly lightweight, while the PEI dome tweeter and built-in crossover handle high-frequency detail cleanly. The pressed-paper cone and TPU surround work together for accurate, dynamic sound reproduction.

  • Size: 100 mm (4")
  • Configuration: 2-way coaxial
  • Power handling: 30W RMS, 60W peak
  • Impedance: 4 ohm
  • Tweeter: PEI dome with neodymium magnet
  • Cone material: Pressed paper
  • Surround material: TPU (Thermoplastic Polyurethane)
  • Built-in crossover included
  • Sold as a pair

Explore the full range in Hertz Dieci.

Specification
Power Handling- Continuous W    30
Power Handling- Peak W    60
ImpedanceOhm    4
Frequency ResponseHz    70 ÷ 21k
Weightof one speaker kg (lb.)    0,45 (0.99)
Cone   Water-repellent pressed paper
More specs
  • Component    Two way coaxial
  • Size mm (in.)    100 (4)
  • Depth mm (in.)    50 (2.0)
  • Woofer Magnet size D x d x h mm (in.)    70 x 32 x 10 (2.7 x 1.3 x 0.4)
  • Woofer Magnet    High density flux ferrite
  • Tweeter Magnet    Neodymium
  • Dome    PEI
  • D mm    85
  • Re Ohm    3,3
  • Fs Hz    115
  • Vas I    1,7
  • Mms g    5,0
  • Cms mm/N    0,38
  • BL T*m    3,5
  • Qts    0,79
  • Qes    0,96
  • Qms    4,33
  • Spl dB    92
What's Included
  • 2-way Speakers
  • Screws
  • Speed clips
  • Owner's manual
  • Template on box
Download User Manual(PDF)
Product information

Hertz

About the Hertz DCX 100.3

From our tech experts at CEN

Hertz Dieci series 4 inch coaxial pair, with the tweeter in the centre of the woofer, rated at 30w RMS.

Who it suits

Drivers replacing tired factory speakers who want a clear improvement without complication.

Our tech experts advise

Sizes, adapter rings and harnesses vary by vehicle, year and trim, so we confirm what your car takes before ordering rather than guessing. Door treatment matters as much as the speaker itself, and an amplifier will get far more out of these than a head unit can. Installation is priced per vehicle, so get in touch with your make, model and year and we will confirm what it needs. See car audio installation.

Explore the full Hertz range at CEN, with fast UK dispatch and expert advice from our Nottingham team. Shop all Hertz

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Car audio installation by CEN in Nottingham

Have it Fitted By Our Team

Our team fits car audio, stereos, dash cams and vehicle security at our workshop in Beeston, Nottingham. Tell us your vehicle and we'll confirm the parts and a fitted price.

  1. 1

    Tell us your vehicle

    Make, model and year, and what you'd like fitted.

  2. 2

    We confirm the parts

    Fascia, wiring and interfaces checked for your car, with a fitted price.

  3. 3

    Fitted at our workshop

    Bring it to our Beeston workshop and we do the rest.

Get a Quote Our Services

Unit 25 Technology Drive, Beeston, Nottingham NG9 1LA

Car audio installation by CEN in NottinghamCar audio installation by CEN in NottinghamCar audio installation by CEN in NottinghamCar audio installation by CEN in Nottingham

Hertz Car Audio Range

Hertz produces high-performance car audio systems driven by research.Music fans who attend live concerts know well the emotions that low undistorted frequencies without dynamic compression can arouse.

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Frequently Asked Questions

Q: Will these speakers fit my car?

A: Most car speakers are standard sizes, but mounting depth and fitting rings vary by vehicle. Check the size in the Specification tab against your vehicle, or contact CEN with your registration and we will confirm fitment and any adapters or fitting kits you need.

Q: Do I need an amplifier to run these speakers?

A: Not always. Most speakers will run from a standard head unit, but a dedicated amplifier lets them perform at their best, particularly for component sets and higher power handling models. The RMS figure in the Specification tab is the guide to how much clean power they can use.

Q: What is the difference between coaxial and component speakers?

A: Coaxial speakers combine the tweeter and woofer in one unit for a simple like-for-like upgrade. Component sets separate the tweeter and woofer with a crossover for better imaging and detail, and suit installs where sound quality is the priority.

Q: Do these come as a pair?

A: Unless stated otherwise, car speakers are sold in pairs. Check the product title and What's Included tab, which lists exactly what is in the box.

Q: Can CEN fit these speakers for me?

A: Yes. CEN offers professional installation from our Nottingham premises. Contact us to book an installation slot or ask for a fitting quote.

Q: How deep are the Hertz Dieci DCX 100.3 speakers?

A: The mounting depth is 50 mm (2.0 in.), which suits most dashboard and shallow door positions.

Q: Do the DCX 100.3 need a separate crossover?

A: No. The crossover is built in, so they connect directly to your existing speaker wiring.

Q: Can the DCX 100.3 run from a factory head unit?

A: Yes. With a 30W RMS rating and 92 dB sensitivity they are designed to work from standard head unit power.