SB Acoustics
SB Acoustics - 5x8" SFCR Mid-Woofer - SB15SFCR39-8
SB Acoustics - 5x8" SFCR Mid-Woofer - SB15SFCR39-8
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$75.95
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$75.95
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Description
The SB Acoustics SB15SFCR39 is a unique 5x8 inch 'racetrack' style midwoofer featuring a robust vented steel chassis and a hard paper cone. This driver has that lovely warm, fast paper cone sound with good bass weight. Ideal for tall slim cabinets. A uique design for a little difference and more surface area in a smaller cabinet. Passive radiator available.
Features
- Racetrack design
- Hard paper cone (made in-house)
- Optimised motor system
- Non-conductive reinforced vented coil former
- Symmetric suspension
- Low damping rubber surround
- Long life silver lead wires
- Vented chassis
Specifications
Specifications
General
| Driver type | Mid-Woofer |
|---|---|
| Nominal size | 5x8" |
| Nominal impedance | 8Ω |
| Power handling (RMS) | 80 W |
| Sensitivity | 87 dB |
| Suggested alignment | Either |
Thiele/Small parameters
| Resonant frequency (Fs) | 32 Hz |
|---|---|
| DC resistance (Re) | 6.2 Ω |
| Voice coil inductance (Le) | 1.3 mH |
| Mechanical Q (Qms) | 7.11 |
| Electrical Q (Qes) | 0.45 |
| Total Q (Qts) | 0.42 |
| Equivalent volume (Vas) | 48.3 L |
| Compliance (Cms) | 1.08 mm/N |
| Moving mass (Mms) | 23 g |
| Mechanical resistance (Rms) | 0.65 kg/s |
| Force factor (Bl) | 8 T·m |
| Effective piston area (Sd) | 178 cm² |
| Linear excursion (Xmax, one-way) | 5 mm |
| Displacement volume (Vd) | 89 cm³ |
| Efficiency bandwidth product (EBP) | 71.11 |
Motor
| Voice coil height | 16 mm |
|---|---|
| Air gap height | 6 mm |
| Magnetic flux density | 0.94 T |
| Magnet weight | 0.54 kg |
Mounting
| Faceplate | Not round, 153 × 252.8 mm (see the maker's drawing) |
|---|---|
| Mounting depth | 84 mm |
| Voice coil diameter | 38.5 mm |
| Weight | 1.65 kg |
Materials
| Cone | Paper |
|---|---|
| Surround | Rubber |
- Xmax is quoted one-way (peak), not peak-to-peak.
- Sensitivity measured at 2.83V/1m.
Downloads
- 5×8″ SB15SFCR39-8 Datasheet
- SB15SFCR39-8 Cutout & Recess Template (NB Audio) Straight off SB Acoustics' spec sheet: flange outline. Scaled from SB Acoustics' drawing, so close but not guaranteed exact: cutout. Left out: recess depth not on file, so measure your flange; no bolt holes (positions not on file). Check it against your driver before you cut.
Where do these figures come from? See the source of each one
