SB Acoustics
SB Acoustics - 6" NRX Mid-Woofer - SB17NRX2L35-4
SB Acoustics - 6" NRX Mid-Woofer - SB17NRX2L35-4
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$134.95
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$134.95
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Stock status is updated regularly from my distributor. If the full quantity ordered isn’t available, I’ll get in touch.
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Description
The SB17NRX2L35-4 and SB17NRX2L35-8 are high-performance 6" midwoofers from SB Acoustics, featuring a vented cast aluminium chassis for strength and low compression. Their proprietary natural fibre cone and soft rubber surround ensure precise transient response. Equipped with a large motor, copper sleeve, and CCAW voice coil, they deliver reduced moving mass and enhanced clarity.
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 transient response
- Non-conducting fibre glass voice coil former for minimum damping
- Extra large motor with extended copper sleeve on pole piece
- Vented coil former
- 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 | 6" |
| Nominal impedance | 4Ω |
| Power handling (RMS) | 60 W |
| Sensitivity | 92 dB |
| Suggested alignment | Ported |
Thiele/Small parameters
| Resonant frequency (Fs) | 41 Hz |
|---|---|
| DC resistance (Re) | 3.1 Ω |
| Voice coil inductance (Le) | 0.14 mH |
| Mechanical Q (Qms) | 4.97 |
| Electrical Q (Qes) | 0.26 |
| Total Q (Qts) | 0.25 |
| Equivalent volume (Vas) | 21.9 L |
| Compliance (Cms) | 1.1 mm/N |
| Moving mass (Mms) | 13.5 g |
| Mechanical resistance (Rms) | 0.7 kg/s |
| Force factor (Bl) | 6.45 T·m |
| Effective piston area (Sd) | 118 cm² |
| Linear excursion (Xmax, one-way) | 4.8 mm |
| Displacement volume (Vd) | 56.64 cm³ |
| Efficiency bandwidth product (EBP) | 157.7 |
Motor
| Voice coil height | 15.6 mm |
|---|---|
| Air gap height | 6 mm |
| Magnetic flux density | 1.1 T |
| Magnet weight | 0.89 kg |
Mounting
| Overall diameter | 171 mm |
|---|---|
| Cutout diameter (suggested) | ≈ 142.0 mm |
| Mounting depth | 76.9 mm |
| Flange thickness | 6.5 mm |
| Bolt circle diameter | 159 mm |
| Mounting holes | 4 |
| Mounting hole diameter | 4.3 mm |
| Voice coil diameter | 35.5 mm |
| Weight | 2.32 kg |
Materials
| Cone | Norex |
|---|---|
| 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
- 6″ SB17NRX2L35-4 Datasheet
- SB17NRX2L35-4 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
