Scan-Speak
Scan-Speak - 1" Classic Dome Tweeter High Power - D2905/970000
Scan-Speak - 1" Classic Dome Tweeter High Power - D2905/970000
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$284.95
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$284.95
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Description
Textile diaphragm 1” similar to the other D2905 series with the addition of Symmetric Drive Technology which almost eliminates electrical phase shift. Specially designed chamber under the cloth surround minimises air noise and compression. Not ferro fluid damped. Anti-resonator-plug in the rear damping chamber eliminates turbulence. Attention to manufacturing detail produces Scan-Speak excellence.
Features
- 1" Textile Dome Diaphragm
- Frequency Extension to above 30KHz
- Patented Symmetrical Drive (SD-2) motor
- Low Resonance Rear Chamber
- Black Painted Alu Face Plate
Specifications
Specifications
General
| Driver type | Tweeter |
|---|---|
| Nominal size | 1" |
| Nominal impedance | 6Ω |
| Series | Classic |
| Power handling (RMS) | 225 W |
| Power handling (program) | 460 W |
| Sensitivity | 89.5 dB |
| Frequency range | 2,500 – 20,000 Hz |
| Recommended crossover | 2. order HP Butterworth, 2.8 kHz |
Thiele/Small parameters
| Resonant frequency (Fs) | 500 Hz |
|---|---|
| DC resistance (Re) | 4.7 Ω |
| Minimum impedance (Zmin) | 5.7 Ω |
| Voice coil inductance (Le) | 0.01 mH |
| Mechanical Q (Qms) | 3.45 |
| Electrical Q (Qes) | 0.54 |
| Total Q (Qts) | 0.47 |
| Equivalent volume (Vas) | 0.02 L |
| Compliance (Cms) | 0.23 mm/N |
| Moving mass (Mms) | 0.45 g |
| Mechanical resistance (Rms) | 0.41 kg/s |
| Force factor (Bl) | 3.5 T·m |
| Effective piston area (Sd) | 8.5 cm² |
| Linear excursion (Xmax, one-way) | 0.4 mm |
| Mechanical excursion (Xmech) | 1.5 mm |
| Efficiency bandwidth product (EBP) | 925.9 |
| Effective piston diameter (D) | 33 mm |
| Impedance at resonance (Zo) | 34.6 Ω |
Motor
| Voice coil height | 3.3 mm |
|---|---|
| Air gap height | 2.5 mm |
| Voice coil layers | 2 |
Mounting
| Overall diameter | 104.3 mm |
|---|---|
| Mounting depth | 41.3 mm |
| Flange thickness | 3.1 mm |
| Bolt circle diameter | 90 mm |
| Mounting holes | 4 |
| Mounting hole diameter | 5 mm |
| Volume displaced by driver | 0.15 L |
| Voice coil diameter | 28 mm |
| Weight | 0.7 kg |
Materials
| Cone | Textile |
|---|---|
| Magnet | Ferrite |
- Xmax is quoted one-way (peak), not peak-to-peak.
- Sensitivity measured at 2.83V/1m.
- Power handling (RMS) is Scan-Speak's 100-hour RMS noise test (IEC 18.4); program power is its long-term maximum power (IEC 18.2).
Where do these figures come from? See the source of each one
