ESB AUDIO 3.25 soft dome tweeter Owner’s Manual
- June 4, 2024
- ESB AUDIO
Table of Contents
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’