Peerless XLS 12 (SWR 308)
Peerless XLS 12 (SWR 308)
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SWR 308 308 SWR 51 147 NX ALP 4L XLS 8/5 ohm - Order ID: 830500 By introducing the new range of Xtra Long Stroke (XLS) subwoofers, Peerless has pushed the performance limits for subwoofers. The XLS/subwoofer range will fulfil every demand for deep clean bass reproduction like active THX home theatre and Dolby Digital subwoofer applications. In the design the emphasis has been put in achieving extreme deep bass, long time reliability, high power handling, and very low distortion - also under very large sound pressures. The 12" XLS is available in several different configurations from small passive radiator assisted subwoofers to classical and car applications. |
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| SWR 308 | |||||||
| Thiele Small parameters: | Free air | Common | Baffled | ||||
| Nominal impedance | Zn | (ohm) | 8 | ||||
| Minimum impedance/at freq. | Zmin | (ohm/Hz) | 4.7/106 | ||||
| Maximum impedance | Zo | (ohm) | 64.2 | ||||
| DC resistance | Re | (ohm) | 3.5 | ||||
| Voice coil inductance | Le | (mH) | 4.2 | ||||
|
Capacitor in
series with 8 ohm (for impedance compensation) |
Cc | (µF) | 38 | ||||
| Resonance Frequency | fs | (Hz) | 18.1 | 18.1 | |||
| Mechanical Q factor | Qms | 3.70 | 3.70 | ||||
| Electrical Q factor | Qes | 0.21 | 0.21 | ||||
| Total Q factor | Qts | 0.20 | 0.20 | ||||
| F (Ratio fs/Qts) | F | (Hz) | 90 | ||||
| Mechanical resistance | Rms | (Kg/s) | 5.12 | ||||
| Moving mass | Mms | (g) | 166.3 | 166.4 | |||
| Suspension compliance | Cms | (mm/N) | 0.46 | ||||
| Effective cone diameter | D | (cm) | 24.4 | ||||
| Effective piston area | Sd | (cm²) | 466 | ||||
| Equivalent volume | VAS | (ltrs) | 139.2 | ||||
| Force factor | Bl | (N/A) | 17.6 | ||||
|
Reference
voltage sensitivity Re 2.83V 1m at 106 Hz (Measured) |
(dB) | 90.6 |
| Magnet and voice coil parameters: | |||||||
| Voice coil diameter | d | (mm) | 51 | ||||
| Voice coil length | h | (mm) | 33 | ||||
| Voice coil layers | n | 4 | |||||
| Flux density in gap | B | (T) | 1.04 | ||||
| Total useful flux | (mWb) | 2.50 | |||||
| Height of the gap | hg | (mm) | 8 | ||||
| Diameter of magnet | dm | (mm) | 147 | ||||
| Height of magnet | hm | (mm) | 35 | ||||
| Weight of magnet | (kg) | 2.42 |
Measuring
methods and conditions are stated in Peerless Standard for Acoustic
Measurements (PSAM)
venerdì 20 giugno 2008