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| SPH-250CTC |
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| Number 10.1820 |
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Top HiFi subwoofer, 2 x 150WMAX, 2 x 8Ω
High-end chassis with aluminium diecast basket, dual voice coil and carbon fibre cone. A preferred size for HiFi subwoofers of highest quality in medium-sized bass-reflex cabinets or also for 3-way speakers!
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| Impedance (Z) |
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2 x 8Ω |
| Resonant frequency (fs) |
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20Hz |
| Max. frequency range |
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f3-3,500Hz |
| Rec. crossover freq. (fmax.) |
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2,000Hz |
| Music power |
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2 x 150WMAX |
| Power rating (P) |
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2 x 100WRMS |
| SPL (1W/1m) |
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91dB |
| Suspension compl. (Cms) |
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0.98mm/N |
| Moving mass (Mms) |
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70g |
| Mech. resistance (Rms) |
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1.7kg/s |
| Mech. Q factor (Qms) |
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5.12 |
| Electr. Q factor (Qes) |
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0.26 |
| Total Q factor (Qts) |
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0.25 |
| Equivalent volume (Vas) |
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220 l |
| DC resistance (Re) |
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2 x 6.8Ω/3.4Ω |
| Voice coil induct. (Le) |
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2 x 1.0mH/1.0mH |
| Voice coil diameter |
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50mm |
| Voice coil former |
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Kapton |
| Voice coil winding height |
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17mm |
| Air gap height |
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8mm |
| Linear excursion (XMAX) |
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±4.5mm |
| Eff. cone area (Sd) |
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343cm2 |
| Volume displacement (Vd) |
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155.7cm3 |
| Force factor (BxL) |
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9.6Tm |
| Reference efficiency (No) |
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0.8% |
| Magnet diameter |
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145mm |
| Magnet weight |
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42.7oz. |
| Mounting cutout |
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Ø 229mm |
| Mounting depth |
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120mm |
| Dimensions |
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Ø 256mm |
| Weight |
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3.8kg |
| Rec. net cabinet volume |
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| Closed |
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35 l |
| Bass-reflex |
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60 l |
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