Scan-Speak
Scan-Speak - 1" Dome Tweeter - D2904/980000
Scan-Speak - 1" Dome Tweeter - D2904/980000
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$334.95
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$334.95
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Description
Symmetric Drive technology that almost eliminates electrical phase shift. A carefully designed chamber & minimises air noise and compression. The geometry of the light-weight aluminium dome causes the typical characteristic “break-up” peak to appear far beyond the audible range. A special diffuser is used to equalise the response in the upper octave. SD-2 motor Low compression Non-resonant chamber Revelator design. This premium tweeter is characterised by a very clean and open sound.
Features
- 1" Aluminium Dome Diaphragm
- Wave Guide
- Patented Symmetrical Drive (SD) motor
- Low Resonance Rear Chamber
- Black Painted Alu Face Plate
Specifications
Specifications
General
| Driver type | Tweeter |
|---|---|
| Nominal size | 1" |
| Nominal impedance | 4Ω |
| Series | Classic |
| Power handling (RMS) | 160 W |
| Power handling (program) | 430 W |
| Sensitivity | 88 dB |
| Frequency range | 2,500 – 20,000 Hz |
| Recommended crossover | 2. order HP Butterworth, 2.5 kHz |
Thiele/Small parameters
| Resonant frequency (Fs) | 500 Hz |
|---|---|
| DC resistance (Re) | 3.5 Ω |
| Minimum impedance (Zmin) | 4.3 Ω |
| Voice coil inductance (Le) | 0.01 mH |
| Mechanical Q (Qms) | 3.09 |
| Electrical Q (Qes) | 0.84 |
| Total Q (Qts) | 0.66 |
| Equivalent volume (Vas) | 0.02 L |
| Compliance (Cms) | 0.2 mm/N |
| Moving mass (Mms) | 0.6 g |
| Mechanical resistance (Rms) | 0.61 kg/s |
| Force factor (Bl) | 2.8 T·m |
| Effective piston area (Sd) | 8.5 cm² |
| Linear excursion (Xmax, one-way) | 0.1 mm |
| Mechanical excursion (Xmech) | 1.5 mm |
| Displacement volume (Vd) | 0.085 cm³ |
| Efficiency bandwidth product (EBP) | 595.2 |
| Effective piston diameter (D) | 33 mm |
| Impedance at resonance (Zo) | 16.4 Ω |
Motor
| Voice coil height | 2.5 mm |
|---|---|
| Air gap height | 2.5 mm |
| Voice coil layers | 2 |
Mounting
| Overall diameter | 104.3 mm |
|---|---|
| Mounting depth | 46 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 | Aluminium |
|---|---|
| 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
