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SLS 213 213 SWR 39 115 THSX AL SLS 8 Ohm - Order ID: 830667 This model is optimised for use in closed box systems in sizes 15-25 Ltr. Extended response can be achieved in vented box systems in sizes of 25-35 Ltr. The 25 mm long coil provides good linearity and control at large excursions. The SLS family are designed especially to accommodate the need of drivers for subwoofers. The basket is a low compression design with full ventilation under the spider. The basket has a low profile front and that do not need countersinking. The low loss rubber surround and the suspensions are mechanically optimised to handle large excursions. The magnet system with the extended back plate allow long cone movement, and finite Element Magnetic optimisation ensures that the magnet flux is used to maximum by controlling the shape of the steel. The magnet system has furthermore an aluminium shortening ring to reduce distortion. The SLS cones are made of coated paper that provides good stiffness and damping in regard of backpressure from cabinets. Costum versions are avilable. |
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| SWR 213 | |||||||
| Thiele Small parameters: | Free air | Common | Baffled | ||||
| Nominal impedance | Zn | (ohm) | 8 | ||||
| Minimum impedance/at freq. | Zmin | (ohm/Hz) | 6.2/150 | ||||
| Maximum impedance | Zo | (ohm) | 63.2 | ||||
| DC resistance | Re | (ohm) | 5.5 | ||||
| Voice coil inductance | Le | (mH) | 2.4 | ||||
|
Capacitor in
series with 8 ohm (for impedance compensation) |
Cc | (µF) | 15 | ||||
| Resonance Frequency | fs | (Hz) | 34.4 | 34.4 | |||
| Mechanical Q factor | Qms | 5.84 | 5.85 | ||||
| Electrical Q factor | Qes | 0.56 | 0.56 | ||||
| Total Q factor | Qts | 0.51 | 0.51 | ||||
| F (Ratio fs/Qts) | F | (Hz) | 68 | ||||
| Mechanical resistance | Rms | (Kg/s) | 1.20 | ||||
| Moving mass | Mms | (g) | 32.4 | 32.5 | |||
| Suspension compliance | Cms | (mm/N) | 0.66 | ||||
| Effective cone diameter | D | (cm) | 16.1 | ||||
| Effective piston area | Sd | (cm²) | 204 | ||||
| Equivalent volume | VAS | (ltrs) | 37.9 | ||||
| Force factor | Bl | (N/A) | 8.3 | ||||
|
Reference
voltage sensitivity Re 2.83V 1m at 150 Hz (Measured) |
(dB) | 86.8 |
| Magnet and voice coil parameters: | |||||||
| Voice coil diameter | d | (mm) | 39 | ||||
| Voice coil length | h | (mm) | 25 | ||||
| Voice coil layers | n | 2 | |||||
| Flux density in gap | B | (T) | 0.93 | ||||
| Total useful flux | (mWb) | 1.35 | |||||
| Height of the gap | hg | (mm) | 8 | ||||
| Diameter of magnet | dm | (mm) | 115 | ||||
| Height of magnet | hm | (mm) | 22 | ||||
| Weight of magnet | (kg) | 0.87 |
Measuring
methods and conditions are stated in Peerless Standard for Acoustic
Measurements (PSAM)
venerdì 20 giugno 2008