← Back to SB Acoustics - 10" DAC Subwoofer - SW26DAC76-8
Where the figures for SW26DAC76-8 come from
I take every figure from SB Acoustics' own product page or datasheet where I can. This lists where each figure on the SW26DAC76-8 page came from.
- 25 from SB Acoustics' product page
- 6 from SB Acoustics' datasheet
- 2 worked out from SB Acoustics' figures
- 1 my estimate
- 3 from NB Audio's listing
General
| Driver type | Subwoofer | NB Audio's listing |
|---|---|---|
| Nominal size | 10" | NB Audio's listing |
| Nominal impedance | 8Ω | Maker's product page |
| Power handling (RMS) | 250 W | Maker's product page |
| Sensitivity | 83 dB | Maker's product page |
| Suggested alignment | Either | NB Audio's listing |
Thiele/Small parameters
| Resonant frequency (Fs) | 19.5 Hz | Maker's product page |
|---|---|---|
| DC resistance (Re) | 6.4 Ω | Maker's product page |
| Mechanical Q (Qms) | 4.4 | Maker's product page |
| Electrical Q (Qes) | 0.29 | Maker's product page |
| Total Q (Qts) | 0.28 | Maker's product page |
| Equivalent volume (Vas) | 54 L | Maker's product page |
| Compliance (Cms) | 0.39 mm/N | Maker's product page |
| Moving mass (Mms) | 172 g | Maker's product page |
| Mechanical resistance (Rms) | 4.8 kg/s | Maker's product page |
| Force factor (Bl) | 21.4 T·m | Maker's product page |
| Effective piston area (Sd) | 312 cm² | Maker's product page |
| Linear excursion (Xmax, one-way) | 12 mm | Maker's product page |
| Displacement volume (Vd) | 374.4 cm³ | Worked out from the maker's figures |
| Efficiency bandwidth product (EBP) | 67.24 | Worked out from the maker's figures |
Motor
| Voice coil height | 30 mm | Maker's product page |
|---|---|---|
| Air gap height | 6 mm | Maker's product page |
| Magnetic flux density | 1 T | Maker's product page |
| Magnet weight | 0.281 kg | Maker's product page |
Mounting
| Overall diameter | 290 mm | Maker's datasheet |
|---|---|---|
| Cutout diameter (suggested) | ≈ 250.5 mm | My estimate, from the maker's drawing |
| Mounting depth | 70.5 mm | Maker's datasheet |
| Flange thickness | 9 mm | Maker's datasheet |
| Bolt circle diameter | 268 mm | Maker's datasheet |
| Mounting holes | 8 | Maker's datasheet |
| Mounting hole diameter | 5.5 mm | Maker's datasheet |
| Voice coil diameter | 75.5 mm | Maker's product page |
| Weight | 3.43 kg | Maker's product page |
Materials
| Cone | Aluminium | Maker's product page |
|---|---|---|
| Voice coil former | Fibreglass | Maker's product page |
| Basket | Cast Aluminium | Maker's product page |
| Magnet | Neodymium | Maker's product page |
Not on file: Le. 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: 10″ SW26DAC76-8 Datasheet