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Hertz

Cento#CX 690

Hertz Cento CX 690Featuring A 6x9 In

5.07 reviewsSee all reviews

High-end 6x9 speakers that deliver crisp, clean highs, warm mids and balanced bass with solid construction — many reviewers note a clear uplift in loudness and overall sound quality.

Buyer confidence

88%

Highlights

  • 6×9 in. semi-pressed paper elliptical cone SPP-M (Semi Pressed Paper-Mica) enhanced with Mica powder for an excellent balance between lightness and damping.
  • Wide rubber suspension engineered for a long excursion and excellent sound damping.
  • High-density flux ferrite magnet combined with low-carbon polar plates for reduced distortion at high power levels.
  • Basket with metallic finish acoustically combined with a rubber magnet cover for total damping of spurious vibrations.

Key specs

Full specs
Component
Coaxials
Size mm (in.)
(6 x 9)
Power Handling - Continuous W
100
Power Handling - Peak W
300
Impedance Ohm
4
Tweeter diaphragm mm (in.)
40 (1.58)
Woofer Voice Coil Ø mm (in.)
30 (1.2)
Tweeter Voice Coil Ø mm (in.)
28 (1.1)

Key specs

Full specs
Component
Coaxials
Size mm (in.)
(6 x 9)
Power Handling - Continuous W
100
Power Handling - Peak W
300

Highlights

Overview
  • 6×9 in. semi-pressed paper elliptical cone SPP-M (Semi Pressed Paper-Mica) enhanced with Mica powder for an excellent balance between lightness and damping.
  • Wide rubber suspension engineered for a long excursion and excellent sound damping.
  • High-density flux ferrite magnet combined with low-carbon polar plates for reduced distortion at high power levels.

Review highlights

Based on customer reviews

Hertz CX 690 — clear, powerful 6x9 car speakers with refined highs

High-end 6x9 speakers that deliver crisp, clean highs, warm mids and balanced bass with solid construction — many reviewers note a clear uplift in loudness and overall sound quality.

7 reviews5.0/5 averageUpdated Mar 15, 2026

What buyers praise

  • Crisp, clean high frequencies
  • Warm mids and balanced, punchy bass

What to watch for

  • 6x9 size may not match some factory openings — confirm fit before buying
Overview


The three-way elliptical coax CX 690 featuring a 6x9 in. cone was designed to achieve maximum performance in horizontal installations and offering, even in this difficult condition, an exceptional tone balance and power handling.
Highlights

Key features

  • 6×9 in. semi-pressed paper elliptical cone SPP-M (Semi Pressed Paper-Mica) enhanced with Mica powder for an excellent balance between lightness and damping.
  • Wide rubber suspension engineered for a long excursion and excellent sound damping.
  • High-density flux ferrite magnet combined with low-carbon polar plates for reduced distortion at high power levels.
  • Basket with metallic finish acoustically combined with a rubber magnet cover for total damping of spurious vibrations.
  • 40 mm (1.58 in.) dome tweeter for efficient distortion-free mid-high frequency reproduction.
  • 20 mm (0.8 in.) dome supertweeter to maximize the level of very high frequencies in horizontal installations.
  • Tweeter faceplate geometry optimized with FEM simulations (Finite Element Modeling), to provide an extremely linear frequency response in off-axis installations.
  • Provided elegant grille made with high-resistance ABS plastic structure with a metallic finish combined with a protective metal mesh.
  • SPP-M
Technologies
SPP-M

SPP-M

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

Specs

Technical Specs

17
ComponentCoaxials
Size mm (in.)(6 x 9)
Power Handling - Continuous W100
Power Handling - Peak W300
Impedance Ohm4
Tweeter diaphragm mm (in.)40 (1.58)
Woofer Voice Coil Ø mm (in.)30 (1.2)
Tweeter Voice Coil Ø mm (in.)28 (1.1)
Frequency Response Hz40 ÷ 23k
Woofer Magnet size D x d x h mm (in.)100 x 32 x 15 (3.94 x 1.26 x 0.59)
Tweeter Magnet size D x h mm (in.)19 x 3 (0.75 x 0.12)
Weight of one speaker kg (lb.)1,55 (3.42)
Woofer MagnetHigh density flux ferrite
Tweeter MagnetNeodymium
ConeSemi-pressed paper + Mica
DomePEI
Xmech mm (in.)5,5 (0.22)

Electro-acoustic Specs

12
D mm139
Re Ohm3,3
Fs Hz70
Le mH0,2
Vas I11,1
Mms g13
Cms mm/N0,34
BL T*m4,9
Qts0,67
Qes0,83
Qms3,3
Spl dB93,5

Physical Specs

6
CX 690
A238 mm | 9.37 in.
B224 mm | 8.82 in.
C95 mm | 3,74 in.
D78,5 mm | 3.09 in.
E268 mm | 10.55 in.
F29 mm | 1.14 in.

Frequency response

CX 690

Visual spec reference.

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Support
Accessories
CG 690 grile

CG 690 grile

SKU: CG 690

Composed by a high-resistance ABS plastic support and metal mesh, to ensure a high degree of protection with a Hi-tech design.