Great, loud upgrade over many factory speakers with crisp, detailed highs and easy driveability from a head unit; expect thinner mids/midbass and occasional installation fiddling.
Buyer confidence
80%Highlights
- T 24 – Tweeter:
- 24mm diaphragm Neodymium tweeter with PEI dome, for a brilliant reproduction of high frequencies in a compact size.
- Annular acoustic lens optimized for exceptional off-axis performance.
- 6dB/Oct crossover integrated on tweeter wiring.
Key specs
Full specs- Component
- System
- Size mm (in.)
- 130 (5)
- Power Handling - Continuous W
- 55
- Power Handling - Peak W
- 220
- 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
- System
- Size mm (in.)
- 130 (5)
- Power Handling - Continuous W
- 55
- Power Handling - Peak W
- 220
Highlights
Overview- T 24 – Tweeter:
- 24mm diaphragm Neodymium tweeter with PEI dome, for a brilliant reproduction of high frequencies in a compact size.
- Annular acoustic lens optimized for exceptional off-axis performance.
Review highlights
Based on customer reviewsHertz K 130 — clear, high-sensitivity 5-1/4" upgrade with bright tweeters
Great, loud upgrade over many factory speakers with crisp, detailed highs and easy driveability from a head unit; expect thinner mids/midbass and occasional installation fiddling.
What buyers praise
- Bright, clear tweeters with good imaging
- High sensitivity — plays loudly on factory or low-power head units
What to watch for
- Midrange and midbass are frequently described as weak — may need a sub or additional mid drivers to fill low end
Overview
Key features
- T 24 – Tweeter:
- 24mm diaphragm Neodymium tweeter with PEI dome, for a brilliant reproduction of high frequencies in a compact size.
- Annular acoustic lens optimized for exceptional off-axis performance.
- 6dB/Oct crossover integrated on tweeter wiring.
- Mounting accessories for external or embedded mounting included.
- V 130 – Woofer:
- V-cone® design for best off-axis response, clear mid-high frequency detail and powerful bass.
- Foam surround combining high sensitivity and deep bass response.
- Pure copper 25 mm (1 in.) voice coil woofer for high dynamic power handling.
- High flux density 70 mm (2.76 in.) ferrite magnet for a powerful undistorted sound.
- Easy-to-install DIN size basket protected by abrasion-resistant dust paint.
- V-CONE®
Technologies

V-CONE®
The exponential profile gets very close to the perfect one, providing exceptional dispersion.
Specs
Technical Specs
| Component | System |
| Size mm (in.) | 130 (5) |
| Power Handling - Continuous W | 55 |
| Power Handling - Peak W | 220 |
| 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) |
| Sensitivity dB SPL | 93 |
| Frequency Response Hz | 55 ÷ 23k |
| Crossover Cut off | - |
| Crossover Type | 6 dB/Oct tweeter integrated |
| Weight of one component - Woofer | 0,53 (1.17) |
| Weight of one component - Tweeter kg (lb) | 0,03 (0.07) |
Physical Specs

| A | 130 mm | 5.12 in. |
| B | 116 mm | 4.57 in. |
| C | 59 mm | 2.32 in. |
| D | 52 mm | 2.05 in. |
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