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The Hertz DS 25.3 delivers clear sound and fills in the low end well; it proved a good-value, drop‑in replacement for a small sealed enclosure in reviewer use.
Buyer confidence
88%Key specs
Full specs- Size mm (in.)
- 250 (10)
- Power Handling - Continuous W
- 150
- Power Handling - Peak W
- 600
- Impedance Ohm
- 4
- No Filter Component
- Subwoofer
- Voice Coil Ø
- 38 (1.5)
- Frequency Response Hz
- 32 ÷ 400
- Magnet size D x d x h mm (in.)
- 100 x 50 x 25 (4 x 2 x 1)
Key specs
Full specs- Size mm (in.)
- 250 (10)
- Power Handling - Continuous W
- 150
- Power Handling - Peak W
- 600
- Impedance Ohm
- 4
Review highlights
Based on customer reviewsHertz DS 25.3 — compact sub with clear sound and solid low end
The Hertz DS 25.3 delivers clear sound and fills in the low end well; it proved a good-value, drop‑in replacement for a small sealed enclosure in reviewer use.
What buyers praise
- Solid low‑end extension — "fills in the low end nicely"
- Good sound range and clarity
What to watch for
- Confirm enclosure volume and mounting dimensions — fit depends on your box (review used a 0.55–0.6 cu ft sealed stealth box)
Overview
Hertz DS 25.3 car audio subwoofers offer high efficiency and exceptional power handling. Equipped with a polypropylene membrane and butyl rubber surround, they provide high excursion with minimal distortion. An efficient cooling system ensures optimal heat dissipation, increasing their reliability.
Specs
Technical Specs
12
| Size mm (in.) | 250 (10) |
| Power Handling - Continuous W | 150 |
| Power Handling - Peak W | 600 |
| Impedance Ohm | 4 |
| No Filter Component | Subwoofer |
| Voice Coil Ø | 38 (1.5) |
| Frequency Response Hz | 32 ÷ 400 |
| Magnet size D x d x h mm (in.) | 100 x 50 x 25 (4 x 2 x 1) |
| Weight of one component kg (lb.) | 3 (6.6) |
| Magnet | High density flux ferrite |
| Cone | Polypropylene with Mica injection |
| Xmech mm (in.) | 16 (0.63) |
Electro-acoustic Specs
13
| D mm | 215 |
| Xmax mm | 9 |
| Re Ohm | 3,3 |
| Fs Hz | 36 |
| Le mH | 2,15 |
| Vas I | 34 |
| Mms g | 106 |
| Cms mm/N | 0,18 |
| BL T*m | 8,5 |
| Qts | 0,92 |
| Qes | 1,13 |
| Qms | 5 |
| Spl dB | 89 |
Physical Specs
4
| A | 257 mm | 10.2 in. |
| B | 234 mm | 9.2 in. |
| C | 116 mm | 4.6 in. |
| D | 104 mm | 4.1 in. |
Frequency response
Visual spec reference.
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Enclosures / Box Advisor
SEALED BOX
- W mm(in.)
- 300 (11.81)
- H mm(in.)
- 300 (11.81)
- D mm(in.)
- 170 (6.69)
- Vcc l(cu.in.)
- 15,3 (933)
- Fc Hz
- 58
Box Tech Data - Sealed Box
| Box Tech Data - Sealed Box | |
|---|---|
| W mm(in.) | 300 (11.81) |
| H mm(in.) | 300 (11.81) |
| D mm(in.) | 170 (6.69) |
| Vcc l(cu.in.) | 15,3 (933) |
| Fc Hz | 58 |
REFLEX BOX
- W mm(in.)
- 300 (11.81)
- H mm(in.)
- 300 (11.81)
- D mm(in.)
- 200 (7.87)
- Vb l(cu.in.)
- 18 (1098)
- Fb Hz
- 43
- Ø mm(in.)
- 62 (2.4)
- L mm(in.)
- 155 (6.1)
Box Tech Data - Reflex Box
| Box Tech Data - Reflex Box | |
|---|---|
| W mm(in.) | 300 (11.81) |
| H mm(in.) | 300 (11.81) |
| D mm(in.) | 200 (7.87) |
| Vb l(cu.in.) | 18 (1098) |
| Fb Hz | 43 |
| Ø mm(in.) | 62 (2.4) |
| L mm(in.) | 155 (6.1) |
Support
Accessories
Grille
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