ESB AUDIO 3.25 soft dome tweeter

WHAT IN THE BOX
- 25 mm voice coil
- Nominal diameter 32.8 mm
- N42 Neodymium magnet
- Light vented aluminum former
- High module silk dome
- ABS housing with self-damping system
- Ferrofluid cooling and damping
- Computer optimized design
- Motor metal parts CNC machined
- Under dome dB Cloth® damping material
- Multi-angle dash mounting cup
- Flush or free mounting system
The tweeter has a silk-impregnated thin fabric dome diaphragm for a smooth sound, with an outer suspension covered with a high-loss damping material to eliminate edge vibration and resonance. The dome is of extremely low mass and is much less susceptible to mechanical deformation than other models, yet it provides a smooth, linear and very extended response.
The 25 mm voice coil has aluminum support and very light copper-coated aluminum wire. The coil is ventilated and damped with iron-fluid oil. The special SVS ventilation design provides two benefits: optimal cooling of voice coil and avoiding compressing the air at the back of the dome. Neodymium N42 magnet, a type of magnet with significantly higher performance than the classic “standard” ones, is optimized with computer simulations to get better efficiency and improve linearity.
SPECIFICATION
| SPECIFICATIONS | |||
| Technical Characteristics | Symbol | Value | Units |
| GENERAL DATA | |||
| Overall Dimension | Dxh | 47 X 11 | mm |
| Nominal Power Handling (AES)* | p | 80 | w |
| Transient Power * | Pp | 160 | w |
| Sensivity 1W/1m | SPL | 89 | dB SPL |
| Frequency Response | 1200 – 25.000 | Hz | |
| Dome Material | High module silk | ||
| *Nominal and Transiet power@ High Pass 2.5KHz – 12db/Oct | |||

| ELECTRICAL DATA | |||
| Nominal Impedance | z | 4 | n |
| DC Resistance | n | 3.71 | n |
| Voice coil Inductance | Lbm | 0.275 | µH |
| VOICE COIL AND MAGNET PARAMETERS | |||
| Voice Coil Diameter | Dia | 25.4 | mm |
| Voice coil Height | h | 2 | mm |
| Magnetic Gap Height | HE | 3.0 | mm |
| Max Linear excursion | Xmax | ±0.5 | mm |
| Voice Coil Former | Aluminum | ||
| Number of layers | n | 2 | |
| Magnet System | Neodymium N-42H | ||
| Efficiency | TJo | 0.465 | % |
| BL Product | BxL | 2.3 | Na |
| Magnet dimension | 0 x h | 24.5×3.6 | mm |

| T&S PARAMETERS | |||
| Suspension Compilance | Cms | 0.128 | N/m |
| Mechanical Q Factor | Oms | 1.129 | |
| Electrical Q Factor | Qes | 1.686 | |
| Total Q Factor | Qts | 0.676 | |
| Moving Mass | mms | 0.169 | g |
| Eq. Comp. Air Load | VAS | 0.011 | |
| Resonance Frequency | Fs | 1300 | Hz |
| Effective Piston Area | SD | 6.429 | cm’ |


















