← Back to Scan-Speak - ¾" Revelator Dome Tweeter - D2104/712000
Where the figures for D2104/712000 come from
I take every figure from Scan-Speak's own product page or datasheet where I can. This lists where each figure on the D2104/712000 page came from.
- 9 from Scan-Speak's product page
- 28 from Scan-Speak's datasheet
- 1 worked out from Scan-Speak's figures
- 3 from NB Audio's listing
General
| Driver type | Tweeter | NB Audio's listing |
|---|---|---|
| Nominal size | 0.75" | NB Audio's listing |
| Nominal impedance | 4Ω | Maker's datasheet |
| Series | Revelator | NB Audio's listing |
| Power handling (RMS) | 50 W | Maker's datasheet |
| Power handling (program) | 120 W | Maker's datasheet |
| Sensitivity | 92 dB | Maker's product page |
| Frequency range | 3,500 – 30,000 Hz | Maker's datasheet |
| Recommended crossover | 2. order HP Butterworth, 4 kHz | Maker's datasheet |
Thiele/Small parameters
| Resonant frequency (Fs) | 500 Hz | Maker's product page |
|---|---|---|
| DC resistance (Re) | 2.8 Ω | Maker's product page |
| Minimum impedance (Zmin) | 3.5 Ω | Maker's datasheet |
| Voice coil inductance (Le) | 0.02 mH | Maker's datasheet |
| Mechanical Q (Qms) | 2.3 | Maker's datasheet |
| Electrical Q (Qes) | 0.48 | Maker's datasheet |
| Total Q (Qts) | 0.4 | Maker's product page |
| Equivalent volume (Vas) | 0.01 L | Maker's product page |
| Compliance (Cms) | 0.46 mm/N | Maker's datasheet |
| Moving mass (Mms) | 0.22 g | Maker's datasheet |
| Mechanical resistance (Rms) | 0.3 kg/s | Maker's datasheet |
| Force factor (Bl) | 2 T·m | Maker's product page |
| Effective piston area (Sd) | 4.5 cm² | Maker's product page |
| Linear excursion (Xmax, one-way) | 0.5 mm | Maker's datasheet |
| Mechanical excursion (Xmech) | 1.5 mm | Maker's datasheet |
| Efficiency bandwidth product (EBP) | 1,042 | Worked out from the maker's figures |
| Effective piston diameter (D) | 24 mm | Maker's datasheet |
| Impedance at resonance (Zo) | 11.3 Ω | Maker's datasheet |
Motor
| Voice coil height | 1.8 mm | Maker's datasheet |
|---|---|---|
| Air gap height | 4 mm | Maker's datasheet |
| Voice coil layers | 2 | Maker's datasheet |
Mounting
| Overall diameter | 92 mm | Maker's datasheet |
|---|---|---|
| Mounting depth | 32.9 mm | Maker's datasheet |
| Flange thickness | 4 mm | Maker's datasheet |
| Bolt circle diameter | 82.5 mm | Maker's datasheet |
| Mounting holes | 6 | Maker's datasheet |
| Mounting hole diameter | 4.2 mm | Maker's datasheet |
| Volume displaced by driver | 0.09 L | Maker's datasheet |
| Voice coil diameter | 19.3 mm | Maker's datasheet |
| Weight | 0.33 kg | Maker's datasheet |
Materials
| Cone | Coated Textile | Maker's product page |
|---|---|---|
| Magnet | Neodymium | Maker's product page |
Not on file: Cutout. Either the maker doesn't publish it or I haven't found it yet.
What the labels mean
- Maker's product page: copied from the maker's product page.
- Maker's datasheet: read off the maker's own datasheet or drawing.
- Worked out from the maker's figures: Vd = Sd × Xmax, EBP = Fs ÷ Qes.
- NB Audio's listing: how I've filed it in the store.
Check them yourself: Datasheet