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Hertz

Cento#CX 100

Hertz Cento CX 100Features The New 24 Mm (0

5.06 reviewsSee all reviews

The Hertz CX 100 delivers crisp, high‑sensitivity sound in a compact 4" dash package with an aim‑able tweeter for improved imaging; well made and affordable, though some vehicles may need minor modification to fit.

Buyer confidence

88%

Highlights

  • Soft Tetolon® fiber 24 mm (0.9 in.) dome tweeter cooled with ferrofluid, for extended and natural high frequencies.
  • RHFC ™ (Rotary High Frequency Contour) tweeter angled and directable to the listener for a perfect frequency response in any installation scenario.
  • Tweeter faceplate geometry optimized with FEM simulations (Finite Element Modeling), to provide an extremely linear frequency response in off-axis installations.
  • 25 mm (1 in.) woofer voice coil featuring an aluminum former to guarantee high excursion and power handling.

Key specs

Full specs
Component
Coaxials
Size mm (in.)
100 (4)
Power Handling - Continuous W
40
Power Handling - Peak W
120
Impedance Ohm
4
Woofer Voice Coil Ø mm (in.)
25 (1)
Tweeter Voice Coil Ø mm (in.)
13 (0.5)
Frequency Response Hz
80 ÷ 22k

Key specs

Full specs
Component
Coaxials
Size mm (in.)
100 (4)
Power Handling - Continuous W
40
Power Handling - Peak W
120

Highlights

Overview
  • Soft Tetolon® fiber 24 mm (0.9 in.) dome tweeter cooled with ferrofluid, for extended and natural high frequencies.
  • RHFC ™ (Rotary High Frequency Contour) tweeter angled and directable to the listener for a perfect frequency response in any installation scenario.
  • Tweeter faceplate geometry optimized with FEM simulations (Finite Element Modeling), to provide an extremely linear frequency response in off-axis installations.

Review highlights

Based on customer reviews

Hertz CX 100 — compact, clear-sounding dash speaker

The Hertz CX 100 delivers crisp, high‑sensitivity sound in a compact 4" dash package with an aim‑able tweeter for improved imaging; well made and affordable, though some vehicles may need minor modification to fit.

6 reviews5.0/5 averageUpdated Mar 15, 2026

What buyers praise

  • Crisp, clear sound with good sensitivity
  • Aim-able tweeter suited to dash installs

What to watch for

  • May require minor modification or adaptation to fit some older or uncommon dash openings
Overview
Coaxial loudspeakers represent a major design challenge due to the critical nature of their acoustic output, being installed in an OEM placement often unfavorable to reproduction. For this reason, in order to achieve high performance, a great engineering effort was put into place, promptly addressed by our R&D teamThe Cento two-way coaxials CX 100 features the new 24 mm (0.9 in.) Tetolon® dome tweeter that delivers a more musical and detailed sound compared to the more traditional plastic materials. The dispersion has been optimized for off-axis listening. The  SPP-M cone (Semi Pressed Paper-Mica) ensuring superior acoustic and damping characteristics. 
Highlights

Key features

  • Soft Tetolon® fiber 24 mm (0.9 in.) dome tweeter cooled with ferrofluid, for extended and natural high frequencies.
  • RHFC ™ (Rotary High Frequency Contour) tweeter angled and directable to the listener for a perfect frequency response in any installation scenario.
  • Tweeter faceplate geometry optimized with FEM simulations (Finite Element Modeling), to provide an extremely linear frequency response in off-axis installations.
  • 25 mm (1 in.) woofer voice coil featuring an aluminum former to guarantee high excursion and power handling.
  • 100 mm (5 in.) semi-pressed paper cone SPP-M (Semi Pressed Paper-Mica) enhanced with Mica powder for an excellent balance between lightness and damping.
  • High-density flux ferrite magnet combined with low-carbon polar plates for reduced distortion at high power levels.
  • Compact and transparent three-spoke basket acoustically combined with a rubber magnet cover for total damping of spurious vibrations.
  • Elegant grille made with high-resistance ABS plastic structure with a metallic finish combined with a protective metal mesh, available as optional.
  • SPP-M
  • RHFC™
Technologies
SPP-M

SPP-M

SPP-M (Semi Pressed Paper-Mica) cone enhanced with Mica powder for an excellent balance between lightness and

RHFC™

RHFC™

RHFC™ (Rotary High Frequency Contour) tweeter angled and directable to the listener for a perfect frequency

Specs

Technical Specs

16
ComponentCoaxials
Size mm (in.)100 (4)
Power Handling - Continuous W40
Power Handling - Peak W120
Impedance Ohm4
Woofer Voice Coil Ø mm (in.)25 (1)
Tweeter Voice Coil Ø mm (in.)13 (0.5)
Frequency Response Hz80 ÷ 22k
Woofer Magnet size D x d x h mm (in.)70 x 32 x 10 (2.76 x 1.26 x 0.39)
Tweeter Magnet size D x h mm (in.)13 x 2 (0.51 x 0.08)
Weight of one speaker kg (lb.)0,47 (1.04)
Woofer MagnetHigh density flux ferrite
Tweeter MagnetNeodymium
ConeSemi-pressed paper + Mica
DomeTetolon
Xmech mm (in.)2,9 (0.11)

Electro-acoustic Specs

12
D mm86,5
Re Ohm3,1
Fs Hz100
Le mH0,18
Vas I2
Mms g5,1
Cms mm/N0,41
BL T*m3,3
Qts0,81
Qes1,00
Qms4,1
Spl dB92

Physical Specs

4
CX 100
A102,5 mm | 4.04 in.
B93 mm | 3.66 in.
C57,5 mm | 2.26 in.
D43,5 mm | 1.71 in.

Frequency response

CX 100

Visual spec reference.

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