Reviewers call the Hertz CX 570 a clear, detailed upgrade over factory speakers that can play loud without distortion and installs easily, though some listeners find the mid-bass light.
Buyer confidence
74%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) directable tweeter for optimal off-axis frequency response and dispersion on the listening point.
- Adjustable high frequency system for perfect frequency response to any listening point.
- Tweeter faceplate geometry optimized with FEM simulations (Finite Element Modeling), to provide an extremely linear frequency response in off-axis installations.
Key specs
Full specs- Component
- Coaxials
- Size mm (in.)
- (5 x 7)
- Power Handling - Continuous W
- 70
- Power Handling - Peak W
- 210
- Impedance Ohm
- 4
- Frequency Response Hz
- 55 ÷ 22k
- Woofer Magnet size D x d x h mm (in.)
- 85 x 32 x 15 (3.35 x 1.26 x 0.59)
- Tweeter Magnet size D x h mm (in.)
- 13 x 2 (0.51 x 0.08)
Key specs
Full specs- Component
- Coaxials
- Size mm (in.)
- (5 x 7)
- Power Handling - Continuous W
- 70
- Power Handling - Peak W
- 210
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) directable tweeter for optimal off-axis frequency response and dispersion on the listening point.
- Adjustable high frequency system for perfect frequency response to any listening point.
Review highlights
Based on customer reviewsHertz CX 570 — detailed, loud car speakers with easy install
Reviewers call the Hertz CX 570 a clear, detailed upgrade over factory speakers that can play loud without distortion and installs easily, though some listeners find the mid-bass light.
What buyers praise
- Clear, revealing mid/high detail
- Handles volume without obvious distortion
What to watch for
- Some listeners report a flat presentation or limited mid-bass
Overview
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) directable tweeter for optimal off-axis frequency response and dispersion on the listening point.
- Adjustable high frequency system for perfect frequency response to any listening point.
- 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.
- 5×7 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 four-spoke basket acoustically combined with a rubber magnet cover for total damping of spurious vibrations.
- SPP-M
- RHFC™
Technologies

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

RHFC™
RHFC™ (Rotary High Frequency Contour) tweeter angled and directable to the listener for a perfect frequency
Specs
Technical Specs
| Component | Coaxials |
| Size mm (in.) | (5 x 7) |
| Power Handling - Continuous W | 70 |
| Power Handling - Peak W | 210 |
| Impedance Ohm | 4 |
| Frequency Response Hz | 55 ÷ 22k |
| Woofer Magnet size D x d x h mm (in.) | 85 x 32 x 15 (3.35 x 1.26 x 0.59) |
| Tweeter Magnet size D x h mm (in.) | 13 x 2 (0.51 x 0.08) |
| Weight of one speaker kg (lb.) | 1,0 (2.2) |
| Woofer Magnet | High density flux ferrite |
| Tweeter Magnet | Neodymium |
| Cone | Semi-pressed paper + Mica |
| Dome | Tetolon |
| Xmech mm (in.) | 4,9 (0.19) |
Electro-acoustic Specs
| D mm | 139 |
| Re Ohm | 3,3 |
| Fs Hz | 70 |
| Le mH | 0,2 |
| Vas I | 11,1 |
| Mms g | 13 |
| Cms mm/N | 0,34 |
| BL T*m | 4,9 |
| Qts | 0,67 |
| Qes | 0,83 |
| Qms | 3,3 |
| Spl dB | 93,5 |
Physical Specs

| A | 221 mm | 8.7 in. |
| B | 182 mm | 7.17 in. |
| C | 75 mm | 2.95 in. |
| D | 65,5 mm | 2.58 in. |
Frequency response

Visual spec reference.
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