SB Acoustics
SB Acoustics - 5" NRXC Mid-Woofer - SB15NRXC30-8-UC
SB Acoustics - 5" NRXC Mid-Woofer - SB15NRXC30-8-UC
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$98.95
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$98.95
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Description
Papyrus cone with an optional thin polyurethane protection coating. Low damping SBR rubber surround with high exertion and resilience. Open structure cast frame for reduced reflections and compression. Aluminium alloy for light weight, non-magnetic and extra rigidity. Shorting Copper cap on pole piece. Non-inductive CCAW fibre glass 30mm coil former. Silver lead wires. Vented pole piece.
Features
- Vented cast aluminium chassis for optimum strength and low compression
- Proprietary cone material with natural fibres made in-house
- 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 | 8Ω |
| Power handling (RMS) | 50 W |
| Sensitivity | 88 dB |
| Suggested alignment | Ported |
Thiele/Small parameters
| Resonant frequency (Fs) | 38 Hz |
|---|---|
| DC resistance (Re) | 5.7 Ω |
| Voice coil inductance (Le) | 0.14 mH |
| Mechanical Q (Qms) | 4.8 |
| Electrical Q (Qes) | 0.35 |
| Total Q (Qts) | 0.33 |
| Equivalent volume (Vas) | 20.7 L |
| Compliance (Cms) | 2.17 mm/N |
| Moving mass (Mms) | 8.1 g |
| Mechanical resistance (Rms) | 0.4 kg/s |
| Force factor (Bl) | 5.6 T·m |
| Effective piston area (Sd) | 82 cm² |
| Linear excursion (Xmax, one-way) | 5 mm |
| Displacement volume (Vd) | 41 cm³ |
| Efficiency bandwidth product (EBP) | 108.6 |
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 | 1.48 kg |
Materials
| Cone | Paper |
|---|---|
| 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
- SB15NRXC30-8-UC 5″ SB15NRXC30-8 Datasheet
- SB15NRXC30-8-UC 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
