← Back to Peerless - 15" Subwoofer - SDF-375F75PR01-04
Where the figures for SDF-375F75PR01-04 come from
I take every figure from Peerless' own product page or datasheet where I can. This lists where each figure on the SDF-375F75PR01-04 page came from.
- 29 from Peerless' product page
- 5 from Peerless' datasheet
- 3 worked out from Peerless' figures
- 1 my estimate
- 4 from NB Audio's listing
General
| Driver type | Subwoofer | NB Audio's listing |
|---|---|---|
| Nominal size | 15" | NB Audio's listing |
| Nominal impedance | 4Ω | Maker's product page |
| Series | Peerless Subwoofer | NB Audio's listing |
| Power handling (RMS) | 400 W | Maker's product page |
| Sensitivity | 87.2 dB | Maker's product page |
| Suggested alignment | Either | NB Audio's listing |
Thiele/Small parameters
| Resonant frequency (Fs) | 26 Hz | Maker's product page |
|---|---|---|
| DC resistance (Re) | 2.8 Ω | Maker's product page |
| Minimum impedance (Zmin) | 3.9 Ω | Maker's product page |
| Voice coil inductance (Le) | 1.14 mH | Maker's product page |
| Mechanical Q (Qms) | 9.31 | Maker's product page |
| Electrical Q (Qes) | 0.436 | Maker's product page |
| Total Q (Qts) | 0.42 | Maker's product page |
| Equivalent volume (Vas) | 91.2 L | Maker's product page |
| Compliance (Cms) | 0.11 mm/N | Maker's product page |
| Moving mass (Mms) | 349 g | Maker's product page |
| Mechanical resistance (Rms) | 6.106 kg/s | Worked out from the maker's figures |
| Force factor (Bl) | 19.2 T·m | Maker's product page |
| Effective piston area (Sd) | 771 cm² | Maker's product page |
| Linear excursion (Xmax, one-way) | 23.9 mm | Maker's product page |
| Mechanical excursion (Xmech) | 43.1 mm | Maker's product page |
| Displacement volume (Vd) | 1,843 cm³ | Worked out from the maker's figures |
| Efficiency bandwidth product (EBP) | 59.63 | Worked out from the maker's figures |
Motor
| Motor efficiency factor (β) | 130 (T·m)²/Ω | Maker's product page |
|---|---|---|
| Air gap height | 18 mm | Maker's product page |
| Voice coil winding height | 53.8 mm | Maker's product page |
| Voice coil layers | 3 | Maker's product page |
| Voice coil wire | CU | Maker's product page |
| Magnet size (OD × ID × thickness) | 220 × 110 × 25 mm | Maker's product page |
Mounting
| Overall diameter | 393 mm | Maker's datasheet |
|---|---|---|
| Cutout diameter (suggested) | ≈ 354.5 mm | My estimate, from the maker's drawing |
| Mounting depth | 217.5 mm | Maker's datasheet |
| Flange thickness | 13.8 mm | Maker's datasheet |
| Bolt circle diameter | 372 mm | Maker's datasheet |
| Mounting holes | 8 | Maker's datasheet |
| Voice coil diameter | 75.6 mm | Maker's product page |
| Weight | 17.4 kg | Maker's product page |
Materials
| Cone | Untreated Paper | Maker's product page |
|---|---|---|
| Surround | SBR | Maker's product page |
| Basket | Cast Aluminium | Maker's product page |
| Magnet | Ferrite | Maker's product page |
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: Spec Sheet