Product Overview
The Hertz Dieci DS 300.3 is a 12-inch (300 mm) subwoofer designed for car audio systems, delivering a powerful 600W peak power handling and 300W continuous program power. It features a V-cone® membrane, a pure copper voice coil, and a robust magnet structure for excellent thermal capacity and superior sound reproduction.
Technical Specifications
| Component | Subwoofer |
|---|---|
| Size | 300 mm (12 in.) |
| Power handling W (peak) | 600 |
| Power handling W (cont. program) | 300 |
| Impedance | 4 Ω |
| Frequency response | 28 ÷ 300 Hz |
| Sensitivity | 93 dB/SPL |
| Magnet size (D x d x h) | 134 x 60 x 25 mm (5.3 x 2.4 x 1 in.) |
| Total Driver Displacement | 1.8 l (0.06 cu.in) |
| Voice Coil Ø | 50 mm (1.97 in.) |
| Magnet | High Density flux ferrite |
| Cone | Polypropylene with Mica injection |
| Weight of one component | 4.1 kg (9.0 lb.) |
| X-mech | 17 mm (0.67 in.) |
*X-mech: maximum mechanic excursion; indicates the maximum linear motion range of the speaker in both directions.
Electro-Acoustic Parameters
| Parameter | Value | Unit |
|---|---|---|
| D | 258 | mm |
| Xmax | 10 | mm |
| Re | 3.3 | Ω |
| Fs | 31 | Hz |
| Vas | 75 | l |
| Mms | 138 | g |
| Cms | 0.19 | mm/N |
| BL | 13.9 | Tm |
| Qts | 0.41 | - |
| Qes | 0.46 | - |
| Qms | 4.13 | - |
| Spl | 93 | dB |
Key Features
- V-cone® with polypropylene membrane stiffened with mineral powders.
- 50 mm pure copper voice coil, wound on aluminium former, for very good thermal and mechanical capacity.
- Designed for use in small sealed or reflex enclosures.
- High excursion butyl rubber surround.
- Massive magnet structure with forced ventilation system.
- Spider with integrated lead wires.
- Offers very high efficiency and superior power handling.
- Includes a protective grille for enhanced aesthetics and speaker protection.
Diagrams and Dimensions
Frequency Response Graph: This graph illustrates the speaker's performance across different frequencies. The horizontal axis (X-axis) represents frequency in Hertz (Hz), spanning from approximately 10 Hz to 1 kHz. The vertical axis (Y-axis) indicates sensitivity in decibels per SPL (dB/SPL), ranging from 0.0 to 50.0. The curve shows a peak sensitivity around 30-40 Hz, with sensitivity decreasing as the frequency increases.
Dimensional Drawings: The product includes detailed drawings showing the physical dimensions and mounting specifications of the subwoofer. One view provides a side profile with labeled dimensions, while another shows a top view indicating the grille and mounting hole pattern. The following dimensions are provided:
- A: 306 mm (12 in.)
- B: 279 mm (11 in.)
- C: 134 mm (5.3 in.)
- D: 122 mm (4.8 in.)
- E: 295 mm (11.6 in.)
- F: 312 mm (12.3 in.)
- G: 14 mm (0.6 in.)
- H: 41 mm (1.6 in.)
