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Hertz DCX 100.3 Dieci Series 4" 2-way car speakers

Item # 301DCX1003

Looking to add a little oomph to your system? Swap out your old speakers for Hertz's Dieci Series 4" car...

Find what Fits your vehicle

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Looking to add a little oomph to your system? Swap out your old speakers for Hertz's Dieci Series 4" car...

Item # 301DCX1003

Ships free today

Every order includes

  • Free lifetime tech support
  • 60-day price-drop protection
  • 60-day returns
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Deeply discounted installation gear

$129.99 pair

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About the Hertz DCX 100.3

Alexander H.

Product highlights:

  • 2-way car speakers (pair)
  • 4" treated paper woofer with polyurethane surround
  • 5/8" PEI dome tweeter
  • handles up to 30 watts RMS (60 watts peak power)
  • frequency range: 70-21,000 Hz
  • sensitivity: 92 dB
  • top-mount depth: 1-3/4"
  • grilles not included
  • warranty: 2 years
  • MFR # DCX 100.3
  • Item # 301DCX1003

What's in the box:

Hertz DCX 100.3 owner's manual

If you need assistance accessing this owner's manual, please give us a call.
  • Two 2-way Speakers
  • Eight 3/4" Screws
  • 8 Speed clips
  • Owner's manual (English/ Spanish/ French/ German/ Italian/ Portuguese/ 20 Others)
  • Template on box

More details on the Hertz DCX 100.3

Pat M.

Features & specs

General
Speaker Size 4
Driver Design 2-way
Woofer Design Cone
Woofer Material Water-Repellent Treated Paper
Woofer Surround Polyurethane
Midrange Design ---
Midrange Material ---
Tweeter Design 15mm Dome
Tweeter Material PEI
Super Tweeter Design ---
Super Tweeter Material ---
Impedance (Ohms) 4
Weather-resistant No
Grilles Included No
Parts Warranty 2 Years
Labor Warranty 2 Years
Specifications
Sensitivity (1W at 1 meter) 92
Sensitivity at 2.83 volts N/A
Frequency Response 70 - 21k Hz
Maximum RMS Wattage 30
Peak Power Handling (Watts) 60
Top-mount Depth (Inches) 1 11/16
Bottom-mount Depth (Inches) N/A
Cutout Diameter or Length (inches) 3 5/8
Mounting Height (Inches) 0.25
Frame Width 3.936
Frame Length 3.936

Product Research

Features

PEI Dome Tweeter: Each speaker has a PEI (Poly-Ether-Imide) dome tweeter. PEI is a polymer film that produces a wide soundstage to improve imaging.

Woofer: The woofer cones are made of water-repellent treated paper.

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Customer Q&A

3 questions already asked

Q
Several people from the Lexus forum stated that they installed these in the front left and right corner dash speakers for the 2022-2025 Lexus NX350h and fit without modification. Crutchfield site only says only the tweeters fit these locations. Why is the discrepancy?
kevin  May 11, 2025
1 answer
A
Greetings Kevin. Thank you for your question. It's all about database. We measure a lot of vehicles, we also measure every speaker we carry. If anything does not fit in those parameters, we going to say it does not fit. It could be as little as 1/1000th of an inch, the database will kick it out. We do not physically try to install hundreds of speakers in every vehicle we research. Nobody does. It's all about the data. The factory speaker is also a 2 screw mounted speaker, most of our 4 inch speakers use 4.
thomas  May 11, 2025 (Staff)
Q
Per your website they won't fit in a Maverick rear pillar. On the Maverick websites people are installing them. Why won't they fit?
steve  Aug 18, 2024
1 answer
A
Hey Steve, so it looks like those Hertz are designed to be a Top mount so the screws go in from the top but it looks like the pillars require a bottom mount design which these speakers do not support. I also show that the magnet diameter is 0.200" bigger than the factory opening which is close enough that it will probably fit but our system is very conservative on the measurements to ensure you have an easier time.
red  Aug 19, 2024 (Staff)
Q
I just ordered these for a 2023 Ford Bronco (Non B&O). Should I install Bass Blockers? If so which would be the correct ones?
dennis  May 04, 2023
1 answer
A
Greetings Dennis, and thank you for your question. Yea you should. The factory 4 inch speakers had resistors (bass Blockers) built on. What they were filtered at? Who knows. Hertz says these can play down to 70hz. The factory system is most likely not sending that frequency, but you should protect these. I would be using a 600 hz bass blocker if using a subwoofer, and 300hz if not using a subwoofer. Technically the 150hz will still protect them.
thomas  May 04, 2023 (Staff)

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Hertz Dieci DCX 100.3
$129.99 pair
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