← Back to Scan-Speak - 5½" Revelator Mid-Woofer - 15W/8530K01
Where the figures for 15W/8530K01 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 15W/8530K01 page came from.
- 11 from Scan-Speak's product page
- 31 from Scan-Speak's datasheet
- 2 worked out from Scan-Speak's figures
- 1 my estimate
- 4 from NB Audio's listing
General
| Driver type | Mid-Woofer | NB Audio's listing |
|---|---|---|
| Nominal size | 5.5" | NB Audio's listing |
| Nominal impedance | 8Ω | Maker's datasheet |
| Series | Revelator | NB Audio's listing |
| Power handling (RMS) | 60 W | Maker's datasheet |
| Power handling (program) | 70 W | Maker's datasheet |
| Sensitivity | 84.5 dB | Maker's product page |
| Suggested alignment | Either | NB Audio's listing |
| Frequency range | fs – 6,000 Hz | Maker's datasheet |
Thiele/Small parameters
| Resonant frequency (Fs) | 38 Hz | Maker's product page |
|---|---|---|
| DC resistance (Re) | 5.9 Ω | Maker's product page |
| Minimum impedance (Zmin) | 6.7 Ω | Maker's datasheet |
| Voice coil inductance (Le) | 0.3 mH | Maker's datasheet |
| Mechanical Q (Qms) | 5.8 | Maker's datasheet |
| Electrical Q (Qes) | 0.55 | Maker's datasheet |
| Total Q (Qts) | 0.5 | Maker's product page |
| Equivalent volume (Vas) | 17 L | Maker's product page |
| Compliance (Cms) | 1.33 mm/N | Maker's datasheet |
| Moving mass (Mms) | 13 g | Maker's datasheet |
| Mechanical resistance (Rms) | 0.54 kg/s | Maker's datasheet |
| Force factor (Bl) | 5.8 T·m | Maker's product page |
| Effective piston area (Sd) | 95 cm² | Maker's product page |
| Linear excursion (Xmax, one-way) | 6.5 mm | Maker's datasheet |
| Mechanical excursion (Xmech) | 9 mm | Maker's datasheet |
| Displacement volume (Vd) | 61.75 cm³ | Worked out from the maker's figures |
| Efficiency bandwidth product (EBP) | 69.09 | Worked out from the maker's figures |
| Effective piston diameter (D) | 110 mm | Maker's datasheet |
| Impedance at resonance (Zo) | 50.4 Ω | Maker's datasheet |
Motor
| Voice coil height | 18 mm | Maker's datasheet |
|---|---|---|
| Air gap height | 5 mm | Maker's datasheet |
| Voice coil layers | 2 | Maker's datasheet |
Mounting
| Overall diameter | 148.2 mm | Maker's datasheet |
|---|---|---|
| Cutout diameter (suggested) | ≈ 126.5 mm | My estimate, from the maker's drawing |
| Mounting depth | 70 mm | Maker's datasheet |
| Bolt circle diameter | 136.2 mm | Maker's datasheet |
| Mounting holes | 5 | Maker's datasheet |
| Mounting hole diameter | 5.3 mm | Maker's datasheet |
| Volume displaced by driver | 0.36 L | Maker's datasheet |
| Voice coil diameter | 38 mm | Maker's datasheet |
| Weight | 1.2 kg | Maker's datasheet |
Materials
| Cone | Coated Sliced Paper | Maker's product page |
|---|---|---|
| Surround | SBR | Maker's product page |
| Basket | Cast Aluminium | Maker's product page |
| Magnet | Ferrite | Maker's product page |
Typical box tunings
| Closed box: box volume | 21 L | Maker's datasheet |
|---|---|---|
| Closed box: corner frequency | 51 Hz | Maker's datasheet |
| Vented box: box volume | 41 L | Maker's datasheet |
| Vented box: box resonance | 29 Hz | Maker's datasheet |
| Vented box: corner frequency | 26 Hz | Maker's datasheet |
Not on file: Flange thickness. 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.
- My estimate, from the maker's drawing: measured off the maker's drawing, usually within ±0.3 mm (up to ±0.5). The suggested cutout is the basket's width on the drawing plus 1 mm of clearance (1.5 mm on drivers over 200 mm). Measure before you cut.
- NB Audio's listing: how I've filed it in the store.
Check them yourself: Datasheet