SB Acoustics
SB Acoustics - 6.5" NBAC Mid-Woofer - SB17NBAC35-4
SB Acoustics - 6.5" NBAC Mid-Woofer - SB17NBAC35-4
Regular price
$124.95
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$124.95
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In stock
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
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 | 6.5" |
| Nominal impedance | 4Ω |
| Power handling (RMS) | 60 W |
| Sensitivity | 90 dB |
| Suggested alignment | Either |
Thiele/Small parameters
| Resonant frequency (Fs) | 30 Hz |
|---|---|
| DC resistance (Re) | 3.1 Ω |
| Voice coil inductance (Le) | 0.13 mH |
| Mechanical Q (Qms) | 4.3 |
| Electrical Q (Qes) | 0.31 |
| Total Q (Qts) | 0.29 |
| Equivalent volume (Vas) | 42.6 L |
| Compliance (Cms) | 2.16 mm/N |
| Moving mass (Mms) | 12.4 g |
| Mechanical resistance (Rms) | 0.6 kg/s |
| Force factor (Bl) | 4.9 T·m |
| Effective piston area (Sd) | 118 cm² |
| Linear excursion (Xmax, one-way) | 5.5 mm |
| Displacement volume (Vd) | 64.9 cm³ |
| Efficiency bandwidth product (EBP) | 96.77 |
Motor
| Voice coil height | 16 mm |
|---|---|
| Air gap height | 5 mm |
| Magnetic flux density | 1 T |
| Magnet weight | 0.54 kg |
Mounting
| Overall diameter | 171 mm |
|---|---|
| Cutout diameter (suggested) | ≈ 145.9 mm |
| Mounting depth | 75 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 | 1.56 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
- 6″ SB17NBAC35-4 Datasheet
- SB17NBAC35-4 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
