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Scan-Speak
Scan-Speak - 1" Revelator Ring Tweeter - R2904/700000
Scan-Speak - 1" Revelator Ring Tweeter - R2904/700000
Regular price
$549.95 AUD
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$549.95 AUD
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Description
Incredible bandwidth of over 80KHz giving unsurpassed phase and tonal characteristics with a warm sound that improves over even the ribbon. Innovative “SD-2” neodymium magnet motor system improves transient response. No ferro fluid. Cooling is performed by a special designed venting system. Non-resonant chamber uses a needle to cut down on cavity air turbulence. Machined aluminium, silver anodised face plate. Attractive too, looks the part... A culmination of Scan-Speak technologies and world leading experience.
Features
- 1" Ring Dome Diaphragm
- Patented Phase Plug Design
- Patented Symmetrical Drive (SD-2) motor
- Large Ring Neo Magnet f. High Output
- Non Resonant Alu Rear Chamber
- Silver Anodised Machined Alu Face Plate
Specifications
Specifications
General
| Driver type | Tweeter |
|---|---|
| Nominal size | 1" |
| Nominal impedance | 4Ω |
| Series | Revelator |
| Power handling (RMS) | 160 W |
| Power handling (program) | 210 W |
| Sensitivity | 94.5 dB |
| Frequency range | 2,500 – 30,000 Hz |
| Recommended crossover | 2. order HP Butterworth, 2.5 kHz |
Thiele/Small parameters
| Resonant frequency (Fs) | 520 Hz |
|---|---|
| DC resistance (Re) | 3 Ω |
| Minimum impedance (Zmin) | 3.7 Ω |
| Voice coil inductance (Le) | 0.01 mH |
| Mechanical Q (Qms) | 2.9 |
| Electrical Q (Qes) | 0.38 |
| Total Q (Qts) | 0.33 |
| Equivalent volume (Vas) | 0.01 L |
| Compliance (Cms) | 0.31 mm/N |
| Moving mass (Mms) | 0.3 g |
| Mechanical resistance (Rms) | 0.34 kg/s |
| Force factor (Bl) | 2.8 T·m |
| Effective piston area (Sd) | 5.6 cm² |
| Linear excursion (Xmax, one-way) | 0.25 mm |
| Mechanical excursion (Xmech) | 1.6 mm |
| Efficiency bandwidth product (EBP) | 1,368 |
| Effective piston diameter (D) | 27 mm |
| Impedance at resonance (Zo) | 26.2 Ω |
Motor
| Voice coil height | 2 mm |
|---|---|
| Air gap height | 2.5 mm |
| Voice coil layers | 2 |
Mounting
| Overall diameter | 103.8 mm |
|---|---|
| Flange thickness | 5.9 mm |
| Bolt circle diameter | 92 mm |
| Mounting holes | 6 |
| Mounting hole diameter | 4.2 mm |
| Volume displaced by driver | 0.12 L |
| Voice coil diameter | 26 mm |
| Weight | 0.4 kg |
Materials
| Magnet | Neodymium |
|---|
- 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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