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Hertz

Uno#X 170

Hertz Uno X 170Features A Special

4.690 reviewsSee all reviews

Clean, detailed midrange and treble with high sensitivity that makes them loud and distortion-free on many factory head units; a solid, easy-to-install upgrade over stock speakers, though bass is modest and may benefit from subsystem tweaks.

Buyer confidence

86%

Highlights

  • Neodymium tweeter with PEI dome, for a brilliant reproduction of high frequencies and compactness.
  • Tweeter faceplate optimized for exceptional off-axis performance.
  • High stiffness metallic-grey finish pressed-paper cone with water-repellent treatment.
  • Foam surround combining high sensitivity and deep bass response.

Key specs

Full specs
Component
Coaxials
Size mm (in.)
170 (6.7)
Power Handling - Continuous W
50
Power Handling - Peak W
200
Impedance Ohm
4
Tweeter diaphragm mm (in.)
24 (0.9)
Woofer Voice Coil Ø mm (in.)
25 (1)
Tweeter Voice Coil Ø mm (in.)
14 (0.55)

Key specs

Full specs
Component
Coaxials
Size mm (in.)
170 (6.7)
Power Handling - Continuous W
50
Power Handling - Peak W
200

Highlights

Overview
  • Neodymium tweeter with PEI dome, for a brilliant reproduction of high frequencies and compactness.
  • Tweeter faceplate optimized for exceptional off-axis performance.
  • High stiffness metallic-grey finish pressed-paper cone with water-repellent treatment.

Review highlights

Based on customer reviews

Hertz X 170 — clear, efficient OEM-replacement coaxials

Clean, detailed midrange and treble with high sensitivity that makes them loud and distortion-free on many factory head units; a solid, easy-to-install upgrade over stock speakers, though bass is modest and may benefit from subsystem tweaks.

90 reviews4.6/5 averageUpdated Mar 15, 2026

What buyers praise

  • Clear, balanced mids and highs — noticeable step up from factory speakers
  • High sensitivity/efficiency — plays loudly and cleanly on many stock head units

What to watch for

  • Bass is lean compared with some aftermarket speakers — expect less punch unless you add an amp, EQ, or sound deadening
Overview
The 6.7” two way coaxials X 170 features a special designed tweeter faceplate optimized for exceptional off-axis performance to ensure a linear frequency response when installed in a factory replacement setup. The pressed-paper cone treated with water-repellent along with the foam surround provide a very high SPL and extended low frequency response, to obtain a rich sound even when driven by the OEM head unit.

The 25 mm(1ˈ) woofer voice coil driven by a high-flux density ferrite magnet offers a highly dynamic power handling for a powerful undistorted sound. The easy-to-install DIN size basket, protected by an abrasion-resistant dust paint, makes the factory speakers replacement a snap.
Highlights

Key features

  • Neodymium tweeter with PEI dome, for a brilliant reproduction of high frequencies and compactness.
  • Tweeter faceplate optimized for exceptional off-axis performance.
  • High stiffness metallic-grey finish pressed-paper cone with water-repellent treatment.
  • Foam surround combining high sensitivity and deep bass response.
  • Pure copper 25mm (1 in.) voice coil woofer for high dynamic power handling.
  • High flux density 80mm (3.15 in.) ferrite magnet for a powerful undistorted sound.
  • Easy-to-install DIN size basket protected by abrasion-resistant dust paint.
Specs

Technical Specs

16
ComponentCoaxials
Size mm (in.)170 (6.7)
Power Handling - Continuous W50
Power Handling - Peak W200
Impedance Ohm4
Tweeter diaphragm mm (in.)24 (0.9)
Woofer Voice Coil Ø mm (in.)25 (1)
Tweeter Voice Coil Ø mm (in.)14 (0.55)
Frequency Response Hz60 ÷ 21k
Woofer Magnet size D x d x h mm (in.)80 x 32 x 10 (3.15 x 1.26 x 0.39)
Weight of one speaker kg (lb.)0,56 (1.23)
Woofer MagnetHigh density flux ferrite
Tweeter MagnetNeodymium
ConeWater-repellent pressed paper
DomePEI
Xmech mm (in.)±3 (0.12)

Physical Specs

4
X 170
A165 mm | 6.5 in.
B140 mm | 5.51 in.
C51 mm | 2.01 in.
D45 mm | 1.77 in.
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