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| SPH-300CTC |
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| Number 10.1830 |
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HiFi subwoofer, 2 x 250WMAX, 2 x 8Ω,
High-end speaker with diecast basket, dual voice coil and carbon fibre cone, powerful bass reproduction from bass-reflex cabinets or an especially dry, pulsed sound from very small closed cabinets, for HiFi, home cinema, and top car HiFi.
Thiele Small parameters and sound pressure curves for voice coils in parallel or series connection.
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| Impedance (Z) |
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2 x 8Ω |
| Resonant frequency (fs) |
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18Hz |
| Max. frequency range |
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f3-2,500Hz |
| Rec. crossover freq. (fmax.) |
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1,500Hz |
| Music power |
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2 x 250WMAX |
| Power rating (P) |
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2 x 150WRMS |
| SPL (1W/1m) |
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92dB |
| Suspension compl. (Cms) |
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0.75mm/N |
| Moving mass (Mms) |
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100g |
| Mech. resistance (Rms) |
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1.5kg/s |
| Mech. Q factor (Qms) |
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6.50 |
| Electr. Q factor (Qes) |
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0.20 |
| Total Q factor (Qts) |
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0.19 |
| Equivalent volume (Vas) |
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225 l |
| DC resistance (Re) |
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2 x 6Ω/3Ω |
| Voice coil induct. (Le) |
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2 x 1.1mH/1.1mH |
| Voice coil diameter |
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62mm |
| Voice coil former |
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Kapton |
| Voice coil winding height |
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18.8mm |
| Air gap height |
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8mm |
| Linear excursion (XMAX) |
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±5.4mm |
| Eff. cone area (Sd) |
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495cm2 |
| Volume displacement (Vd) |
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267.3cm3 |
| Force factor (BxL) |
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12.1Tm |
| Reference efficiency (No) |
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1.3% |
| Magnet diameter |
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180mm |
| Magnet weight |
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65oz. |
| Mounting cutout |
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Ø 272mm |
| Mounting depth |
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130mm |
| Dimensions |
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Ø 308mm |
| Weight |
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6.0kg |
| Rec. net cabinet volume |
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| Closed |
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- (only with series resistor) |
| Bass-reflex |
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> 50 l |
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