Haut-parleur coaxial SEAS T18RE/XFCTV2
[T18RE/XFCTV-8+6] Avis/Critiques The PP/TPX based cone matches ideally with the adaptive rubber surround.
The result is an outstandingly smooth frequency response from the mid woofer. The coaxially arranged precoated fabric dome high frequency unit has a low resonance frequency, and integrates with the cone driver to a point source.
The cone of the woofer acts as a horn loading for the tweeter, and the chassis of the dome unit represents the throat of this horn. The compensation magnet and the shielding cup is mounted on the woofer magnet system to eliminate magnetic stray fields, hence the unit can be used very close to CRT`s in audio/video applications.
The frequency responses above show measured free field sound pressure in 0, 30, and 60 degrees angle using a 12L closed box. Input 2.83 Vrms, microphone distance 0.5m, normalized to SPL 1m.The dotted line is a calculated response in infinite baffle based on the parameters given for this specific driver. The impedance is measured in free air without baffle using a 2V sine signal.
| |
Woofer |
Tweeter |
| Nominal Impedance |
8ohms |
6ohms |
| Recommended frequency range |
30-3000Hz |
2-25kHz |
| Short Term power handling* |
250w |
220w |
| Long term power handling* |
80w |
90w |
| Characteristic sensivity (2.83v/1m) |
87dB |
88.5dB |
| Voice coil diameter |
39mm |
26mm |
| Voice coil height |
12mm |
1.5mm |
| Air gap height |
6mm |
2.0mm |
| Linear coil travel (p-p) |
6mm |
0.5mm |
| Maximum coil travel (p-p) |
19mm |
|
| Magnetic gap flux density |
0.87T |
1.2T |
| Magnet weight |
0.84kg |
|
| Total weight |
1.91kg |
|
| Voice coil resistance |
6.1ohms |
4.8ohms |
| Voice coil inductance |
0.79mH |
0.05mH |
| Force factor |
6.8N/A |
2.3N/A |
| Free air resonance |
26Hz |
1200Hz |
| Moving mass |
13.7g |
0.3g |
| Air load mass in IEC baffle |
0.76g |
|
| Suspension compliance |
2.7mm/N |
|
| Suspension machanical resistance |
1.45Ns/m |
|
| Effective piston area |
120cm² |
7cm² |
| VAS |
52 Litres |
|
| Qms |
1.63 |
|
| Qes |
0.31 |
|
| Qts |
0.26 |
|
July 2007-1
*IEC 268-5 (tweeter via high pass butterworth filter 3500Hz, 12dB/oct) SEAS reserves the right to change technical data. |
|
