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Scan-Speak
Scan-Speak - 1¼" Revelator Dome Tweeter - D2905/990000
Scan-Speak - 1¼" Revelator Dome Tweeter - D2905/990000
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$419.95 AUD
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Description
28mm Dome Tweeter 6ohm, Ferrite Magnet, Waveguide
D2905/990000 – The original Revelator tweeter – is built on the heritage of our successful Classic tweeters, continuing with Symmetrical Drive (SD-2) motor design which includes copper caps, the non resonant chamber and the specially treated textile 29mm dome and further optimised for the ultimate performance utilising a large machined aluminium wave guide front.
Features
- Excellent Sound Reproduction
- 1" Textile Dome Diaphragm
- Patented Symmetrical Drive (SD-2) motor
- Wide Surround Textile Diaphragm
- Large Wave Guide Front
- Black Anodised Machined Alu Face Plate
Specifications
Specifications
General
| Driver type | Tweeter |
|---|---|
| Nominal size | 1.25" |
| Nominal impedance | 6Ω |
| Series | Revelator |
| Power handling (RMS) | 225 W |
| Power handling (program) | 430 W |
| Sensitivity | 91 dB |
| Frequency range | 2,500 – 25,000 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) | 5.6 Ω |
| Voice coil inductance (Le) | 0.01 mH |
| Mechanical Q (Qms) | 4.83 |
| Electrical Q (Qes) | 0.72 |
| Total Q (Qts) | 0.63 |
| Equivalent volume (Vas) | 0.02 L |
| Compliance (Cms) | 0.23 mm/N |
| Moving mass (Mms) | 0.45 g |
| Mechanical resistance (Rms) | 0.29 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) | 694.4 |
| Effective piston diameter (D) | 33 mm |
| Impedance at resonance (Zo) | 36.1 Ω |
Motor
| Voice coil height | 3.3 mm |
|---|---|
| Air gap height | 2.5 mm |
| Voice coil layers | 2 |
Mounting
| Overall diameter | 130 mm |
|---|---|
| Flange thickness | 5 mm |
| Bolt circle diameter | 110 mm |
| Mounting holes | 4 |
| Mounting hole diameter | 5 mm |
| Volume displaced by driver | 0.22 L |
| Voice coil diameter | 28 mm |
| Weight | 0.8 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).
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