SB Acoustics
SB Acoustics - 5" NBAC Mid-Woofer - SB15NBAC30-4
SB Acoustics - 5" NBAC Mid-Woofer - SB15NBAC30-4
Regular price
$124.95
Regular price
Sale price
$124.95
Unit price
per
Tax included.
Shipping calculated at checkout.
Out of stock
Backordered Product. Contact us for lead time
Couldn't load pickup availability
Description
Features
- Vented cast aluminium chassis for optimum strength and low compression
- Geometrically reinforced aluminium cone for optimum piston operation and reduced break-up
- Soft low damping rubber surround for improved transient response
- Non-conducting fibre glass voice coil former for minimum damping
- Extended copper sleeve on pole piece for low inductance and low distortion
- CCAW voice coil for reduced moving mass
- Long life silver lead wires
- Vented pole piece for reduced compression
Specifications
Specifications
General
| Driver type | Mid-Woofer |
|---|---|
| Nominal size | 5" |
| Nominal impedance | 4Ω |
| Power handling (RMS) | 50 W |
| Sensitivity | 88 dB |
| Suggested alignment | Ported |
Thiele/Small parameters
| Resonant frequency (Fs) | 33 Hz |
|---|---|
| DC resistance (Re) | 3.1 Ω |
| Voice coil inductance (Le) | 0.12 mH |
| Mechanical Q (Qms) | 4.4 |
| Electrical Q (Qes) | 0.31 |
| Total Q (Qts) | 0.29 |
| Equivalent volume (Vas) | 21 L |
| Compliance (Cms) | 2.2 mm/N |
| Moving mass (Mms) | 10.6 g |
| Mechanical resistance (Rms) | 0.5 kg/s |
| Force factor (Bl) | 4.7 T·m |
| Effective piston area (Sd) | 82 cm² |
| Linear excursion (Xmax, one-way) | 5 mm |
| Displacement volume (Vd) | 41 cm³ |
| Efficiency bandwidth product (EBP) | 106.5 |
Motor
| Voice coil height | 15 mm |
|---|---|
| Air gap height | 5 mm |
| Magnetic flux density | 1 T |
| Magnet weight | 0.54 kg |
Mounting
| Overall diameter | 150 mm |
|---|---|
| Cutout diameter (suggested) | ≈ 124.9 mm |
| Mounting depth | 68.3 mm |
| Flange thickness | 6.5 mm |
| Bolt circle diameter | 138 mm |
| Mounting holes | 4 |
| Mounting hole diameter | 4.3 mm |
| Voice coil diameter | 30.5 mm |
| Weight | 1.46 kg |
Materials
| Cone | Aluminium |
|---|---|
| Surround | Rubber |
| Voice coil former | Fibreglass |
| Basket | Cast Aluminium |
- Xmax is quoted one-way (peak), not peak-to-peak.
- Sensitivity measured at 2.83V/1m.
Downloads
- 5″ SB15NBAC30-4 Datasheet
- SB15NBAC30-4 Cutout & Recess Template (NB Audio) Straight off SB Acoustics' spec sheet: flange outline, recess depth, bolt holes. Scaled from SB Acoustics' drawing, so close but not guaranteed exact: cutout. Check it against your driver before you cut.
Where do these figures come from? See the source of each one
